11
Mount Wilson Toll Road, Altadena, California
Kinneloa Mesa,
CA
Located in Altadena in the Angeles National Forest. Highlights: If you are training for some type of physical fitness race, this is a good spot for you. The trail is a grueling workout, but very rewarding when you get to the ... trails.com
15
Echo Mountain Loop
Altadena,
CA
I prefer taking the fire road up (which was hard enough for me) but you could also take Sunset trail too if you want singletrack (I'll add a trail for that after I ride it). If you stay on the fire road, keep right at a... singletracks.com
18
Brown Mountain / Ken Burton & El Prieto Options,...
Altadena,
CA
This 15.1-mile loop delivers an unsparing body blow. It leaves you with a sweaty back, waterlogged feet, and an inspired noggin. But you won't mind a bit. Because long after you forget the hot, grueling climb and endless stre... trails.com