Did my second group ride in my new home: we did 48 miles, took about 3.5 hours and it was relatively hilly. Someone said we did 2700 vertical feet of climbing, is that hilly/kinda hilly? I dunno. I'm a flatlander in a new hilly place so I'm just trying to survive. It seems I'm doing OK but my legs are really heavy after that ride. My hamstrings were starting to twitch near the end but I did make it. Score for me!