Idlehour Trail

HARD 6 reviews
#139 of 223 trails in

Idlehour Trail is a 14.8 mile lightly trafficked out and back trail located near Altadena, California that features a river and is rated as difficult. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail.

Distance: 14.8 miles Elevation Gain: 4,337 feet Route Type: Out & Back

dog friendly

backpacking

camping

hiking

mountain biking

running

forest

river

views

wildlife

rocky

Steady, well-paced "out and back" trail from the top of the Mount Lowe motorway (and tunnel) all the way down to Idlehour campground. Most people probably do the opposite route - from Pasadena up through Henninger Flats and then to Idlehour - but this is the reverse route going downhill first and then uphill on the way back. Except for traversing up and around Mount Markham, the elevation change is relatively steady and moderate - nothing too steep. It's a long trek, but the rewards are peace and solitude since not many take this route. Lots of animal droppings too, which means not many people come this way. The trail is well-maintained with only a few trees to hobble over, but it looks like trail maintenance is actively being done.

backpacking
10 months ago

Beautiful hike in and out. I logged in at almost exactly 7 miles down to the camp. So much easier walking there than on the way up. Ran into a couple downed trees that were blocking the trail and had to scramble up and over one of them to continue. Lots of water in the stream (filter it) and carefully watched my step as the trail crosses it a number of times in the valley. Stayed for an overnighter to try out some new gear and had the place all to myself. Don't forget to use a bear bag or canister if you plan on staying for the night.

hiking
Mon Dec 03 2018

Peaceful, no water for dogs so don’t bring them, rocky. It was cold when we went there. 49F. Dress appropriately.

hiking
Sun Aug 05 2018

Amazing views from the very first steps. We initially missed the first left turn trailhead to Mt Lowe summit by continuing on Mt Lowe Motorway. That was our extra 2 miles RT added on to the 17 miles. At the Idlehour Trail Camp there is a stream with cold refreshing water to cool down & drink (with filter). We stopped here on way out & way back. Much of the hike is shaded which is a plus. Encountered an irritated Rattlesnake on way back so beware & be careful.

recorded Idlehour Trail

hiking
8 months ago

hiking
9 months ago

hiking
9 months ago