RaceOwlRacer

RaceOwlRacer provides the racer with RaceOwl.com tracking, race status, checkpoint and optional navigation features. You and your friends may use the RaceOwl system to track your position relative to other racers and view your track on the interactive map.
Download/install the app, set your racer number, select your race event and the RaceOwl tracker does the rest. During the event and when your position is at the event, RaceOwlRacer automatically and periodically transmits your position on the RaceOwl.com site. When you finish or exit the race course, RaceOwlRacer automatically stops tracking you. The phone’s screen does not need to remain on for the app to work; racers may just start the app, turn off the screen and put the phone away.
A navigation option is also available as an annual subscription. Your position and heading are displayed on the race course along with the recommended path, hazards, course boundaries and other racers. The Navigation map is simplified for enhanced night vision and will auto-rotate to better help a weary mind interpret and adjust course.
NOTE: This App uses Location Background Mode to track your race position. Continued use of GPS running in the background can dramatically decrease battery life.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/