The payoff-to-hike-time ratio of the M trail is huge. You can reach the big letter in 20 minutes, then take in one of the most spectacular vistas in the valley. In the summer, this trail is more crowded than the burrito bus line at a Burning Spear concert, but if you go all the way to the top, you can escape the crowds and see the big O-N-T-A-N-A on the other side of Mount Sentinel.
3. Pattee Canyon