The White Mountain Trail is located northwest of Big Bear Lake in San Bernardino National Forest. The trail is designated as 3N17. The trail is challenging due to the fact that it is steep and has very loose dirt/rocks. It is rated as a 2+ to a 3 on the JustRuns Rating System. Lockers are a big help in negotiating the climb goinf from west to east. Use caution to not get sideways on the hill.