How to Hike the Bayshore Bikeway Extension

The Bayshore Bikeway Extension is not merely a paved trailit is a living corridor that connects communities, ecosystems, and histories along the San Francisco Bays eastern shoreline. Originally designed as a bicycle path to promote sustainable transportation, the extension has evolved into one of the most accessible and rewarding hiking experiences in the Bay Area. While its name suggests cycling, the wide, well-maintained path, gentle gradients, and scenic overlooks make it ideal for hikers of all ages and abilities. This tutorial provides a comprehensive, step-by-step guide to hiking the Bayshore Bikeway Extension, from route planning to safety protocols, gear selection, and real-world insights drawn from seasoned trail users. Whether youre a local seeking a peaceful weekday escape or a visitor exploring the regions natural and urban landscapes, understanding how to hike this path effectively enhances your experience and ensures safety, enjoyment, and environmental stewardship.

Step-by-Step Guide

1. Understand the Route and Its Segments

The Bayshore Bikeway Extension spans approximately 15 miles, running from the southern edge of the San Francisco International Airport (SFO) in the north to the southern terminus near the city of Redwood City, with key access points in South San Francisco, Burlingame, San Mateo, and Foster City. The trail primarily follows the former right-of-way of the Southern Pacific Railroad, repurposed into a multi-use path that parallels Highway 101 and the bay shoreline. It is divided into five distinct segments:

• Segment 1: SFO to South San Francisco 2.5 miles, urban transition zone with industrial views and limited shade.
• Segment 2: South San Francisco to Burlingame 4 miles, increasingly residential with pocket parks and bay vistas.
• Segment 3: Burlingame to San Mateo 3.5 miles, most scenic portion with restored wetlands and wildlife observation platforms.
• Segment 4: San Mateo to Foster City 3 miles, elevated causeway over tidal marshes with panoramic bay views.
• Segment 5: Foster City to Redwood City 2 miles, ends at the Redwood Creek Trailhead, connecting to regional trail networks.

Each segment offers different terrain, amenities, and points of interest. Before setting out, determine your starting and ending points based on your fitness level, time availability, and desired scenery. The full hike can take 57 hours at a moderate pace with breaks. Most hikers choose to complete 58 miles in a single outing.

2. Plan Your Start and End Points

Choosing the right trailhead is critical. Popular starting points include:

• SFO Trailhead Accessible via the SFO Employee Parking Lot on International Blvd. Offers restrooms, water fountains, and ample parking. Ideal for early morning hikes.
• South San Francisco City Hall Trailhead Located at 801 Grand Avenue. Public transit accessible via SamTrans Bus Route 292. Good for urban-to-nature transitions.
• Burlingame Avenue Trailhead Near the intersection of Burlingame Avenue and Bay Road. Offers cafes, restrooms, and shaded benches. Best for midday hikes.
• Foster City Lagoon Trailhead Accessible from the Foster City Marina. Provides restrooms, picnic areas, and kayak launch points. Ideal for sunset hikes.
• Redwood City Trailhead Located at the corner of Broadway and Seaport Boulevard. Connects to the San Francisquito Creek Trail and the Bay Trails southern extension. Best for long-distance hikers.

Plan your route as a loop or point-to-point. For a loop, consider taking public transit (SamTrans or Caltrain) back to your starting point. Caltrain stops at San Mateo, Burlingame, and Redwood Cityall within 0.5 miles of the bikeway. Use the SamTrans Trip Planner or Google Maps Transit mode to coordinate connections.

3. Prepare Your Gear

Despite its urban proximity, the Bayshore Bikeway Extension requires thoughtful preparation. Unlike a city sidewalk, this trail exposes you to sun, wind, and variable microclimates. Essential gear includes:

• Footwear: Sturdy walking shoes or trail runners with good arch support. Avoid sandals or high heels. The path is paved but can have cracks, drainage grates, and occasional debris.
• Hydration: Carry at least 2 liters of water per person, especially in summer. There are few water fountains between Burlingame and Foster City.
• Sun Protection: Wide-brimmed hat, UV-blocking sunglasses, and reef-safe sunscreen (SPF 30+). The trail has minimal shade between South San Francisco and San Mateo.
• Layered Clothing: Temperatures can vary by 15F between morning and afternoon. Wear moisture-wicking base layers with a windbreaker. The bay breeze can be chilly even on warm days.
• Navigation: Download offline maps via AllTrails or Gaia GPS. Cell service is inconsistent near wetlands and under Highway 101 overpasses.
• Snacks: Energy bars, trail mix, or fruit. There are no vendors along the trail except near Burlingame and Foster City.
• Emergency Kit: Include a small first aid kit, whistle, phone charger pack, and a paper map as backup.

Do not rely on public restrooms along the route. Plan your stops at trailheads where facilities are confirmed. Bring hand sanitizer and toilet paper if planning extended hikes.

4. Navigate the Trail Surface and Hazards

The Bayshore Bikeway Extension is paved with asphalt and concrete, making it wheelchair and stroller accessible. However, hikers must remain vigilant for:

• Bicycle Traffic: The trail is shared with cyclists, including commuters and recreational riders. Always stay to the right, announce your presence when passing (On your left!), and avoid sudden stops.
• Uneven Pavement: Cracks, expansion joints, and root heaves are common near the SFO and Redwood City ends. Watch your step.
• Drainage Grates: Wide metal grates near tidal areas can trap loose footwear. Step over them, not on them.
• Wildlife: You may encounter egrets, herons, harbor seals, and occasionally, foxes. Observe from a distance. Do not feed animals.
• Weather: Fog is common in the morning, especially near the bay. Visibility can drop below 100 feet. Carry a headlamp or phone flashlight even on sunny days.

Use designated crossing points when intersecting with roads. Never jaywalk. Signal to cyclists when crossing paths. Stay alert at intersections with Highway 101 overpassesvehicles may be speeding overhead.

5. Time Your Hike for Optimal Conditions

The best times to hike the Bayshore Bikeway Extension are:

• Early Morning (6:00 AM9:00 AM): Cool temperatures, low cyclist traffic, and the best light for photography. Fog often burns off by 10 AM.
• Late Afternoon (3:00 PM6:00 PM): Golden hour lighting over the bay, especially from Foster City southward. Sunset views from the Foster City Lagoon are iconic.
• Weekdays: Avoid weekends and holidays when the trail becomes congested with families, dog walkers, and cyclists.

Summer months (JuneSeptember) can be foggy and cool, even when inland areas are hot. Winter (NovemberFebruary) brings rain, slick pavement, and occasional wind. Check the National Weather Service Bay Area forecast before departure. Avoid hiking during heavy rain or high wind advisories.

6. Respect Trail Etiquette and Regulations

The Bayshore Bikeway Extension is managed by the San Mateo County Parks Department and the California Department of Transportation. Key rules include:

• Speed limit for cyclists: 15 mph. Hikers are not permitted to use scooters, skateboards, or motorized devices.
• Dogs must be leashed (6-foot max). Clean up after petswaste bins are provided at major trailheads.
• No open flames, alcohol, or smoking on the trail.
• Stay on designated paths. Off-trail hiking damages sensitive wetland habitats.
• Do not remove plants, shells, or rocks. The area is part of the San Francisco Bay National Wildlife Refuge.

Report violations or hazards to the non-emergency line of the San Mateo County Sheriffs Office or via the Bay Trail mobile app. Leave no trace. Pack out everything you bring in.

Best Practices

1. Start with a Shorter Segment

First-time hikers should begin with Segment 3 (Burlingame to San Mateo), which is the most scenic and well-maintained. This 3.5-mile stretch offers the highest concentration of interpretive signage, benches, and wildlife viewing platforms. Completing this segment builds confidence and familiarity with trail conditions before tackling longer distances.

2. Use the Bay Trail App for Real-Time Updates

The official Bay Trail mobile app (available on iOS and Android) provides real-time alerts about trail closures, construction, wildlife sightings, and weather advisories. It includes downloadable audio guides, historical facts, and photos of key landmarks. Sync the app before your hike to access offline content.

3. Hike with a Buddy or Group

While the trail is generally safe, hiking with at least one other person reduces risk. Inform someone not on the trail of your planned route and expected return time. Group hikes also enhance the experiencesharing observations, taking photos, and discussing local ecology make the journey more memorable.

4. Learn to Identify Local Flora and Fauna

The Bayshore Bikeway Extension traverses one of the last remaining salt marsh ecosystems in the Bay Area. Learn to identify:

• California cordgrass (Spartina foliosa) Tall, green grasses that stabilize the marsh.
• Western snowy plover A small, endangered shorebird often seen near the Foster City marshes.
• Black oystercatcher Distinctive black bird with bright orange beak, often seen along rocky outcrops.
• California mussel Clusters of dark shells clinging to rocks at low tide.

Download the iNaturalist app to log sightings and contribute to citizen science efforts. Your observations help scientists track species migration and habitat health.

5. Stay Hydrated and Recognize Heat Stress

Even on cool days, exertion combined with sun exposure can lead to dehydration or heat exhaustion. Signs include:

• Dizziness or lightheadedness
• Excessive sweating or dry skin
• Nausea or headache
• Confusion or rapid heartbeat

Stop immediately if you experience these symptoms. Find shade, sip water slowly, and cool your neck and wrists with damp cloth. Do not wait to feel extreme discomfort before acting.

6. Document Your Journey Responsibly

Photography is encouraged, but always prioritize safety and respect for nature. Avoid standing on railings or climbing fences for a better shot. Use a tripod only if it doesnt obstruct the path. Share your photos on social media with

BayshoreHike to promote awarenessbut never tag exact locations of sensitive wildlife nests or endangered plants.

Tools and Resources

1. Official Trail Maps

The San Mateo County Parks Department provides free, downloadable PDF maps of the Bayshore Bikeway Extension. These include elevation profiles, rest areas, and points of interest. Visit smcgov.org/parks/bayshore-bikeway for the most current version.

2. Trail Navigation Apps

• AllTrails User-submitted reviews, photos, and GPS tracking. Filter by hiking to avoid cyclist-heavy segments.
• Gaia GPS Offers topographic overlays and offline maps. Ideal for long-distance planning.
• Bay Trail App Developed by the Bay Area Open Space Council. Includes audio tours, educational content, and real-time alerts.

3. Public Transit Integration

Caltrain and SamTrans provide seamless connections to the trail:

• Caltrain: Stops at San Mateo, Burlingame, and Redwood City. All stations have bike racks and are within 0.3 miles of the trail.
• SamTrans: Route 292 runs along El Camino Real and stops at South San Francisco City Hall and the SFO transit center.
• Transit App: Real-time bus tracking and route planning. Use Bayshore Bikeway as a destination.

4. Weather and Air Quality Tools

Before heading out, check:

• National Weather Service Bay Area Forecast: weather.gov/mtr
• AirNow.gov: Monitors PM2.5 and ozone levels. Avoid hiking when air quality is Unhealthy for Sensitive Groups or worse.
• Windy.com: Shows real-time wind speed and direction. Strong bay winds can make hiking uncomfortable.

5. Educational Resources

Deepen your understanding of the trails ecological and historical context with these resources:

• San Francisco Bay National Wildlife Refuge Visitor Center: Offers free brochures and ranger-led walks (check schedule online).
• Bay Area Open Space Council: Publishes The Bay Trail: A Guide to the Bays Edge (available in print and digital).
• California Academy of Sciences: Online module: Wetlands of the Bay Area (free to access).

6. Volunteer and Support Opportunities

Help maintain the trails beauty and accessibility by volunteering with:

• Friends of the Bay Trail: Monthly cleanups and invasive species removal.
• Bay Area Ridge Trail Council: Trail maintenance days near Redwood City.
• Sierra Club Bay Chapter: Guided nature walks and educational events.

Participating not only supports conservation but also connects you with experienced hikers and local experts.

Real Examples

Example 1: The Commuter Turned Hiker

Maya, a software engineer from San Mateo, used to bike the Bayshore Bikeway Extension to work. After a knee injury, she switched to walking. She began with 2-mile segments from her home near the San Mateo Transit Center. Within three months, she completed the full 15-mile route. I didnt realize how much wildlife Id see, she says. Ive watched a harbor seal pup learn to swim from the Foster City overlook. Ive seen egrets hunting in the marsh at dawn. Its my therapy.

Example 2: The Family Adventure

The Chen family from Palo Alto brought their two children, ages 7 and 10, on a weekend hike from Burlingame to San Mateo. They packed sandwiches, a field guide to birds, and a scavenger hunt list (find 3 types of shells, 2 different birds, 1 historic marker). We stopped every half-mile for snacks and to read the signs, says mother Lisa. The kids learned more about the bay in one day than in a month of school. Were planning to hike the next segment next month.

Example 3: The Solo Sunset Hike

James, a retired teacher from Redwood City, hikes the final 2 miles from Foster City to the Redwood City Trailhead every Friday evening. He brings a journal and writes one observation per hike. Ive recorded 47 sunsets over the bay, he shares. Each one is different. Sometimes the clouds turn purple. Sometimes the water looks like liquid mercury. I dont take photos. I just watch. His journal entries have been archived by the Redwood City Historical Society as a personal record of seasonal change.

Example 4: The Environmental Researcher

Dr. Elena Ruiz, a marine biologist from Stanford, uses the Bayshore Bikeway Extension as a field site for her research on salt marsh carbon sequestration. She collects soil samples at designated points and monitors bird nesting behavior. The trail is a rare corridor where urban development and ecological restoration coexist, she explains. Hikers who respect the boundaries become part of the conservation effort. Every pair of eyes watching helps protect this space.

FAQs

Is the Bayshore Bikeway Extension safe for solo hikers?

Yes, the trail is generally safe for solo hikers during daylight hours. It is well-traveled, well-lit at major intersections, and patrolled by county rangers. Avoid hiking alone after dark. Carry a charged phone and let someone know your route. Trust your instinctsif a situation feels unsafe, leave the trail and seek help at a nearby business or transit station.

Can I bring my dog?

Yes, dogs are allowed but must be on a leash no longer than 6 feet at all times. Pick up waste immediately and dispose of it in designated bins. Some sections near wetlands have seasonal closures to protect nesting birdscheck the Bay Trail app for alerts.

Are there restrooms along the trail?

Restrooms are available at major trailheads: SFO, South San Francisco City Hall, Burlingame Avenue, Foster City Marina, and Redwood City Trailhead. There are no public restrooms between these points. Plan accordingly.

Is the trail wheelchair accessible?

Yes, the entire Bayshore Bikeway Extension is ADA-compliant. The surface is smooth asphalt with gentle slopes. Ramps are provided at all road crossings. Wheelchair users may encounter occasional debris or crackscarry a small hand tool to clear minor obstructions.

Can I camp along the trail?

No. Camping is prohibited on the Bayshore Bikeway Extension. The trail is a linear public right-of-way, not a wilderness area. Nearby campgrounds include Crystal Springs Campground (10 miles inland) and the Redwood City RV Park.

What should I do if I see an injured animal?

Do not approach or attempt to handle the animal. Note the location and call the San Francisco Bay National Wildlife Refuges emergency line at (650) 588-8550. Trained wildlife responders will arrive promptly. If the animal is blocking the trail, step back and wait for help.

Are there guided hikes available?

Yes. The Bay Area Open Space Council offers monthly guided walks from April through October. Check their website for schedules. Local nature centers in San Mateo and Redwood City also host seasonal events.

Is the trail open during rain?

The trail remains open during light rain, but conditions can become slippery. Avoid hiking during heavy rain, thunderstorms, or high winds. Flooding can occur in low-lying marsh areas. Check trail status on the Bay Trail app before leaving home.

Can I bring a stroller?

Yes. The trail is stroller-friendly, though wider, all-terrain models are recommended due to occasional cracks and drainage grates. Avoid folding strollers on steep inclines near overpasses.

How do I report a damaged sign, broken bench, or littering?

Use the Bay Trail apps Report an Issue feature or contact San Mateo County Parks at (650) 599-1520. Provide the nearest mile marker or landmark. Reports are typically addressed within 48 hours.

Conclusion

Hiking the Bayshore Bikeway Extension is more than a physical journeyit is an immersion into the dynamic relationship between urban life and natural resilience. This trail, once a forgotten rail line, now serves as a vital artery for recreation, education, and ecological preservation. By following this guide, you are not just walking a pathyou are participating in a broader movement to protect, understand, and celebrate the Bay Areas unique coastal heritage.

Whether youre drawn by the quiet rhythm of the tides, the sight of a heron taking flight, or the simple joy of moving through a landscape shaped by both human hands and natural forces, the Bayshore Bikeway Extension offers something profound for every hiker. Prepare thoughtfully, move mindfully, and leave only footprints. The trail endures because we choose to honor it.

Grab your shoes, fill your water bottle, and step onto the path. The bay is waiting.