A weekly group ride is the easiest way to get more miles in without planning anything: show up, ride with people, be home for a late dinner. This one is family-friendly, all kinds of bikes are welcome, and it starts and ends at Pleasant Hill BART, a short ride up the Iron Horse Trail from Walnut Creek.
Routes vary, mixing the Iron Horse with neighborhood streets around Concord and the nearby cities.
It is dark by 6 PM this time of year, so bring a front light and a rear light. The ride is not run by Walk Bike Walnut Creek; check the group's page before holidays and in bad weather.