Quote Originally Posted by emily_in_nc View Post
NWG, I totally get what you're saying. After managing just a bit over an hour on my MTB the other day due to the steep climbs, I was wrung out! Huffing and puffing for sure! I think 1 to 1.5 hours of tough mountain biking is a tremendous workout and probably equivalent to double or even triple that on a road bike, depending on terrain. I always feel like I should get extra credit when I ride off road.

I totally agree with this. Just riding my mtb on the dirt trail next to the local paved rail trail is enough for a really good workout, harder work than riding the road bike on the adjacent pavement.