A system for monitoring an athletic performance, comprising: an input system (116, 128) designed to receive: (a) a first type of input data indicative of an athlete's movement distance during an athletic performance over at least a first portion of a route and (b) a second type of input data indicative of the athlete's movement distance during the same athletic performance over at least the first portion of the route, wherein the first type of input data is generated by a first sensor system that is independent from a second sensor system that generates the second type of input data, and wherein the first sensor system and the second sensor system are designed such that each operates to collect input data during at least the first portion of the route; and a processing system programmed and adapted for: (a) determining whether the first type of input data or the second type of input data is likely more accurate for the first portion of the route by (i) comparing the first type of input data and the second type of input data and/or (ii) utilizing a third type of input data from a third sensor system; and (b) determining at least one of overall movement distance during the athletic performance, movement distance over the first portion of the route, overall pace during the athletic performance, or pace over the first portion of the route using the type of input data determined likely to be more accurate over the first portion of the route. an input system (116, 128) designed to receive: (a) a first type of input data indicative of an athlete's movement distance during an athletic performance over at least a first portion of a route and (b) a second type of input data indicative of the athlete's movement distance during the same athletic performance over at least the first portion of the route, wherein the first type of input data is generated by a first sensor system that is independent from a second sensor system that generates the second type of input data, and wherein the first sensor system and the second sensor system are designed such that each operates to collect input data during at least the first portion of the route; and a processing system programmed and adapted for: (a) determining whether the first type of input data or the second type of input data is likely more accurate for the first portion of the route by (i) comparing the first type of input data and the second type of input data and/or (ii) utilizing a third type of input data from a third sensor system; and (b) determining at least one of overall movement distance during the athletic performance, movement distance over the first portion of the route, overall pace during the athletic performance, or pace over the first portion of the route using the type of input data determined likely to be more accurate over the first portion of the route. (a) determining whether the first type of input data or the second type of input data is likely more accurate for the first portion of the route by (i) comparing the first type of input data and the second type of input data and/or (ii) utilizing a third type of input data from a third sensor system; and (b) determining at least one of overall movement distance during the athletic performance, movement distance over the first portion of the route, overall pace during the athletic performance, or pace over the first portion of the route using the type of input data determined likely to be more accurate over the first portion of the route.