apple watch kinda sucks for this. the apple fitness bike app wont pause when you stop and all your averages will be off. plus battery life sucks. A garmin watch is a much better choice. longer battery life if you get the right one you can hook up cadence sensors and speed sensors and such to it. one with a altimeter will give you more info on How much you climb. I had both for awhile but two watches was a pain. the apple watch works ok with strava but the garim watch tends to cost less.