Trail Days


Summer of Stewardship - 2023

The Town of Mammoth Lakes and Inyo National Forest are teaming up for the 14th season of Trails Days on the Mammoth Lakes Trail System. With more opportunities than ever you're invited to join the Mammoth Lakes Trail System trail crew and hosts to help with new trail construction, maintenance, and stewardship activities all summer long. 

Sign up Here for a Shift


Saturday, September 23 – Annual Lakes Basin Clean Up!

It’s time to wrap up the Mammoth Lakes Trail System summer of stewardship with the annual Lakes Basin Cleanup! In coordination with the Great Sierra River Cleanup, join us Saturday, September 23rd at 9am, to meet our amazing trail crew and hosts at Horseshoe Lake. Enjoy bagels and coffee before heading out to clean up the Lakes Basin and help us finish our summer trail projects. Go here for Event details.


Mammoth Lakes Trail System Trail Stewardship History can be found here.