I frequently ride a bent on our gravel roads out here particularly when pavement gets icy, in fact did about 20 miles on gravel today. I would imagine pretty well any LWB would do fine. My own bike is a Burley LWB frame with upgraded components, and it does as well as my wife's Raleigh hybrid on gravel, arguably a bit better. I've done may rails to trails miles and it is much better than road bikes on those surfaces. Probably better than mountain bikes here too, as mountain bikes are a bit overkill for the rails to trail paths that I have seen.