Originally Posted by
fuji86
dsh, since an mtb has higher gi than most SS/FG's,
This is the silliest thing I've ever heard. I'll give you the benefit of the doubt and assume it was a typo.
an hour on each regardless of what the final distance is will still be more workload on the mtb.
I know after riding the mtb hard for a week or two hard, the next ride I do on either the SS/FG or vintage road bike, feels incredibly easier, almost like a vacation.
If riding your FG feels like a vacation, it's because you're not trying hard enough. 85% MHR on a mountainbike is exactly the same workout as 85% MHR on a fg is exactly the same workout as 85% MHR on a tri bike.