And have done tons of epics, and did some road biking before that. Imo, MTBiking is way way more physically taxing than road biking. Can I do a century ride? Probably. That 40 miler (earlier post) I did was actually a triathlon (Lazy Man Iron Man that I put off much of the miles till the last day) and did a mile swim and a bunch of running afterwords. The swim was much much harder than the bike ride.

Would I want to do a century ride? Never, ever. Your lycra covered bum is unfortunately not enough to hold my attention for that long. I would literally die of boredom.

Now if you pay me $420,000 I will do a century ride tomorrow.