Thank you for the pointers . We currently we are riding flats and hills into a park with a pretty good long incline - my guess is about 300 ft elevation climb across a S patterned paved road maybe 3/4 mile distance, then flat on both ends of the trails. One end is straight on old RR bed, the other curves through preserve. Cadence is usually 58-62, peaking at 75 on flats in low gear between the "hills".