The best reason to ride somewhere is a good destination. On the third Saturday of the month, a neighbor opens a driveway bakery on First Avenue, right on the Contra Costa Canal Trail: croissants, sticky buns, scones (including gluten-free), coffee, tea and fresh-squeezed orange juice, with a few cafe tables to sit at.
From most of central Walnut Creek you can get there almost entirely on paved trail, about two flat miles from Civic Park. That makes it a low-stress ride with kids, with a real treat at the end.
Drop by any time during the morning; the best selection goes early.