UltraTrac is a GPS mode that decreases the update rate of GPS data to provide increased battery life. This setting, which by default decreases the update rate to once a minute, is perfect for an ultramarathon (ultra distance) or for a long hike as the battery life of the device can last up to 50 hours in ideal conditions.
To enable the GPS mode, UltraTrac:
To maximize track detail for your activity:
Utilizing the proper settings will allow you to balance battery life with track detail.
* Setting the update rate to 15 seconds will provide approximately 20 hours of tracking, while setting it the update rate to 20 seconds should provide greater than 24 hours of tracking time. Results will vary based on tracking conditions (heavy tree cover and other things like terrain and buildings can decrease the battery life faster).