We did the 4.4 mile round trip Hike up to "Tom's Thumb" & back down the day after doing the 2.5 mile hike at Echo Canyon Trail on Camelback Mountain!! I'm calling it the "Arizona Two-step". Two of the toughest trails in the Valley, do them back to back days and really test yourself. You have to do the Tom Thumb hike 2nd. The trail is very nice and we'll marked. Good Luck!!