Charleston Slough Trails is a 11.6 mile moderately trafficked loop trail located near Palo Alto, California that features a river and is good for all skill levels. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.
dogs on leash
A popular destination for birdwatcher, families on bikes, and joggers, the boardwalk catwalk trail loop is great for a weekend outing.
Actually, it is possible to do a 6 mile loop all around the palo alto baylands. You'll come across lots of runners, bird watchers, and families on bikes. On weekdays a convalescent home brings a bunch of old folk out for a walk. This park is accessible by Shoreline, the parking lot near the Palo Alto airport, or there is a path under 101 off of E. Bayshore near the business complexes.
There isn't much shade and it could get dusty during a hot day. Sometimes the smell of pollen or bird poo gets strong in places.