I've been wanting to explore the bay trail south of Fremont around the end of the SF Bay for a long time. The weather forecast is good for Saturday. BART to BART or, you can drive to the start. There's lots of parking @ Fremont / Warm Springs. The ride is mostly flat, some sections gravel. So bring a bike with wider tires. I have not ridden most parts of this ride. Approx. 15% of the route is gravel - I estimate 6 miles. Probably fine if you have 25 mm tires, although I recommend 28mm and up to