What? : A large trail system that connect many parks along the bay waterfront. Most trails are or paved or in a very good and well-maintained dirt roads conditions. this is ideal place for long bike ride or runs. you will enjoy the waterfront and the bird viewing.
Where? : I will try to describe below in details the different trail sections and where to enter them.
When? : All trails are exposed to the sun with almost no shade, recommended time is at the afternoon.
Deu note: All trails are flat and recommended for walking, running or long bike trips.
Because the trail system is right on the bay waterfront you will have many birds viewing opportunities.
For simplicity I will describe the trails in two sections
The first one: all the trail system that are East of NASA Moffett Fair airfield (direction to San Jose)
The second section: all the trail system West of NASA (Direction to Palo Alto)
My Thoughts: As you can see below there are endless miles of trail options to visit, my favorite one is Palo Alto Baylands Nature Preserve trailhead, this is an excellent point to enter the trail system, bird watching in the pools, long hiking or biking...
East of NASA:
Stevens Creek Shoreline Nature Study Area Preserve
Nice waterfront trail for hike running or biking, going at the edge of NASA Moffett Fair field.
The wide paved Rd. trail going between the airfield fence and the water ponds. You can always see here many water birds.
Bay Trail Sunnyvale
Starting at Sunnyvale water reclamation facility ponds, connecting section at the Bay trail
Old landfill hill with nice view
San Tomas Aquino Creek Trail
Many different trails going into many directions for long distance, connected to the Bay trail
Can go to San Jose
Lower Guadalupe River Trail
Trail that go on both sides of the Guadalupe River all the way to San Jose airport and downtown
Ulistac Natural Area
Mineta San Jose International Airport
Heritage Rose Garden
Can continue to Milpitas:
Alviso Marina County Park
Alviso Slough 9 miles loop Trail
Don Edwards San Francisco Bay National Wildlife Refuge Environmental Education Center
Nice bird watching place
Coyote Creek Trail, Milpitas
Trail along the water creek, not so much to see but something that go north and not take the road
When Biking you can go back to Sunnyvale at:
San Tomas Aquino Creek Trail
Nice trail along the creek, going near Levies stadium and under 101 all the way to Homestead road
San Tomas Exp. way all the way up to Homestead Rd.
West of NASA (Mountain View & Palo Alto):
Shoreline Lake Boathouse
Nice place with parking, can go to the lake or to the Bay Trail.
A lot of Bird Watching places.
Can be very crowded at weekends, nice coffee place near the lake.
Palo Alto Baylands Nature Preserve trailhead
Another entrance to the shoreline lake from the north.
With Adobe Creek loop trail, you can go between the ponds (Pelican Nesting View) and all the way to Byxbee Park.
There is an option to get to this location from Palo Alto (near the JCC) with a trail that pass under the 101.
Again this is also a crowded place but good one for running, biking and excellent place for bird watching.
Old landfill site with many trails for cycling & walking, you can find there sculptor of conceptual art.
Palo Alto Duck Pond
Environmental Volunteers EcoCenter
Another interesting place for walking, biking or Birdwatching
Interesting history as being Palo Alto boat harbor
Lucy Evans Baylands Nature Interpretive Center
Entrance for the San Francisquito Creek trail that can go all the way around the small airport and the golf field to east Palo Alto.