I've been thinking about making our local rides a wee bit more interesting, and think this could be a goer. I could set out a route, not critical as everyone would be riding together anyway, and have a couple of climbs and maybe half a dozen descents. Set everyone off at 1 minute intervals, then use strava for the timings of each section, which I'll previously have set as a segment.
Has anyone done this, and can anyone see any flaws in my plan?. I reckon everyone I ride with has either a garmin or a smart phone, so we should be covered that way.