O-range is a Garmin watch app for orienteering runners. When you use the app the watch will vibrate and peep when you are close to the controls.
When you register on this page and you will get your own user space where you can upload courses. The courses can be in IOF XML 3.0-format or in GPS exchange format (gpx) exported from Purple Pen, Ocad or any other tool making gpx-files for orienteering.
You can download one selected course or all controls in an event to your Garmin Watch.