I have joined a small biking club centered at the Moldaw Retirement home. We currently have 3-5 active members from Moldaw and its neighborhood. We typically run 12-20 miles every Friday. That amounts to a 90 minute ride before lunch and 45 minutes after. I usually take a photo or two. Here's a link to my Google Photos biking-club album.
If you live in the neighborhood, you might like to join. The three most active members have battery-assist bikes, but many casual members do not. There are many hill-free rides from Moffett Field to the Dunbarton Bridge. Most bike dealers will loan you an e-bike for a trial. I am happy to coach and maybe invite you to try out mine. Here's an explanation of my October 2019 ebike purchase.