Eastern Sierra Mountain Biking Report & Information Guide

4-8-2026 @ 8 AM From Bishop, California, at 4,250 feet.

Good morning. The southern part of the Eastern Sierra is all melted out now, below the 8,000 to 8,300-foot level. The quick snow loss has opened up most of the Forest Service Roads and many trails around Mammoth Lakes.

However, if you’re planning to come up to Mountain Bike, the weather will change back towards a winter pattern over the next couple of weeks. You can expect much colder conditions in the high country, with several inches of snow possible below the 8,500-foot level over that time frame. 

Out of Mammoth Lakes, you can ride the Shady Rest area and all the service roads that get sunshine, which includes the Knolls Loop. Out in Old Mammoth, the local MTB trails area is all open now. I have not had a chance to check out the Mammoth Rock Trail, but it should be mostly rideable now, if not 100% opened. 

Lower Rock Creek Canyon Trail should be a great ride this week. Be ready for some slick muddy spots, and watch for hikers and dogs. People think this is a bomber trail for MTBs, but it is a shared-use trail, so be aware and courteous to others. 

Other Trails you can ride now are the Big and Little Smokey Bear Loops and the Inyo Craters Loop. This is a very early melt-out on these trails, and the surface should still be decent, not too sandy. Might even be some snow patches in the higher sections in the shade.

For those wondering about the Bike Park season, I’m expecting an early melt-out this year, with the Mammoth Mountain Bike Park having a long epic season.

If the current weather holds up, I would expect trails out of Canyon and Eagle to be rideable before Memorial Day, with the full park open by the end of June.

Ride on, Steve

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