Originally Posted by
dutret
17mph avg with 52/16!!!!!
gear down man.
A respectable pace is whatever you want. For a solo 70 mile ride with 400' of descending it should be pretty much the same as it would be on a geared road bike.
+1, but only because your cadence is way too slow. I think you are mashing at around 68rpm and should be in the 80-90 range. However, eventually you will be able to spin in those gears.