|GPS Rock Climbing Guide Index|
If you plan to check colororange.com way points on a paper topo map you could still use longitude and latitude, but some people prefer the UTM format. If you are using a US topo map it probably uses the NAD27 map datum, select NAD27 here (NAD27 Conus Mean to be precise).
If for some reason you set your GPS to NAD27, select NAD27 here.
To see an online map, click any underlined waypoint name in the USA!
If you have a paper map that uses an other datum, expect a small error.