I have a Garmin and I set the autopause for 3 MPH. I think it gives me a pretty good reading for average at the end. If I switch it to the MTB, I put it at zero as the speed is much slower and there are obstacles to get over and around and that would shut it down constantly! I am happy with the settings and I spent alot of time playing around with it before I settled on 3! I use a cateye as "backup" ...well, because I had it before I had the Garmin!...and they are very similar at the end of the ride, so that was my reasoning for using 3 MPH as the autopause point.