Originally Posted by
Tpcorr
Other than preventing data loss from gps signal loss, is there any advantage to using the speed sensor over the gps for determining speed and distance?
It really depends on your goals, but I'll go out on a limb and say no.
If your cadence is too low, you could be hurting your knees, or fatiguing yourself too early. If your power or heart data is off, you won't get the fitness benefits you expect and are working for. If your distance data is off slightly (1 to 2 %) nothing bad will happen.