Trail Days – Sustainable Recreation Saturdays

Since 2009 the Mammoth Lakes Trail System and Inyo National Forest have been teaming up for the annual Trail Days Stewardship events. These fun and challenging public trail stewardship events take place on various Saturday mornings throughout the summer. All ages and ability levels are welcome. Each event starts with a free bagel breakfast followed by half a day of trail work, a free lunch and lots of raffle prizes!

Details about Trail Days are on

Adopt A Trail

The MLTS, along with the USFS and Mammoth Lakes Recreation, have launched an Adopt A Trail Program ensuring our trails, trailheads, and lakes remain well-kept, safe and enjoyable. This program provides an opportunity to adopt a facility through a financial sponsorship and/or volunteer stewardship. It is hoped that each facility will not only be sponsored but will benefit from volunteers willing to maximize engagement, stewardship and sustainability. Your adoption will help to keep our local trails, trailheads and lakes safe, fun, and well-maintained for years to come!

Find more information on MLR Website

MLTS Trail Maintenance

In 2016 the Town of Mammoth Lakes and Inyo National Forest formalized an agreement for soft surface trail maintenance within the Town boundary. This program includes over 30 miles of soft surface trails. Each season MLTS identifies issues and develops a strategy for maintenance throughout the season. Areas that have recurring problems will be considered for reroute projects. Popular trails like the Mammoth Pass Trail, Duck Pass Trail, and Heart Lake Trail have been maintained and reconstructed to create a more sustainable trail system.

Trail Host

The Mammoth Lakes Trail System Trail Host program is helping trail users have fun safely. We provide information, clean up litter, and collect data related to trail facilities and trail use. There are volunteer opportunities for people who want to work with staff to contribute to community efforts. Trail Hosts and volunteers have proven to be a vital resource for visitor and locals alike as they enjoy the trail system. If you see a Trail Host feel free to ask them questions or just say hello! Hosts are active year-round.

Details about the Trail Host Program can be found on

Shady Rest Winter Trails

The Town of Mammoth Lakes in partnership with Inyo National Forest provides several miles of non-motorized, multi-use winter trails located between Shady Rest Park and the Mammoth Lakes Welcome Center. Winter fat biking, nordic skiing, snow shoeing and hiking are all welcome activities on the Shady Rest Winter Trails. The grooming operation can begin with at least 18 inches of snow pack. Watch for updated grooming reports throughout the season on the Trails Condition Page.

Check it out on!

Summer 2020 Reroutes

During the Summer of 2020, Mammoth Lakes Trail System Trail Crew and Volunteers worked to reroute two trails. The Mammoth Rock Trail had extensive work done on the east end of the trail near Sherwin Creek Road. Better soil and a better design keep this trail sustainable. The Mountain View Trail underwent an extensive reroute, removing a road ride and creating a fun and sustainable single-track trail. The new reroute leads you to great views of the San Joaquin Ridge. Mountain View Trail also received a new bridge and widening to create a more accessible trail.

Trail Conditions Online

The new Trail Conditions page on provides updates about system trail conditions, work being done, Shady Rest Winter Trail grooming reports, and avalanche forecasts pulled from Eastern Sierra Avalanche Center. The page also includes handy weather links to NOAA, the “Dweeb Report”, and the Tahoe Daily Snow. Access it by clicking the "Trail Conditions" link in the upper right-hand corner of the site at any time.

Add it to your bookmarks to stay in the know!

Mammoth Trails Committee (The MTC)

Mammoth Lakes Recreation (MLR) convenes and facilitates the Mammoth Trails Committee (The MTC) a sub-committee which provides oversight for the entire Mammoth Lakes Trail System. Their regular meetings occur approximately four times a year and are open to public input. Click here to view upcoming meeting dates and archived meetings on Granicus.

For more information visit

‘There Is No Poo Fairy!’ Program – Clean Trails!

Pet waste accumulation is a serious problem in Mammoth Lakes, especially troubling as our area serves as an important watershed for the state of California. To combat this hazardous waste accumulation problem, the Mammoth Lakes Trail System (MLTS) has installed twelve new dog waste receptacles stocked with branded "there is no poo fairy" bags at critical areas. The MLTS is working hard to ensure that our trails and trailheads stay clean for all to enjoy.

More information coming soon at

MLTS Handouts

The Mammoth Lakes Trail System produces a number of informational handouts, which include up-to-date maps and etiquette information. The Winter Recreation Handout, The Summer Recreation Handout, the Shady Rest Winter Trails Handout, and the E-Bike Information Handout are all available seasonally on the home page (link) to view, download or print.

Check out the current handouts on the home page
Additional Resources