Los Alamos National Laboratory

Los Alamos National Laboratory

Delivering science and technology to protect our nation and promote world stability

Taking Care of our Trails

Continued access and use of Los Alamos National Laboratory trails is contingent upon being good stewards of these federal lands.


  • Environmental Communication & Public Involvement
  • P.O. Box 1663 MS K491
  • Los Alamos, NM 87545
  • (505) 667-3792
  • Email

Last March’s winds felled many trees around the Laboratory, especially along the West Jemez Road corridor. The Laboratory will now be removing these hazard and fallen trees from a large area between TA-03 and the back gate along West Jemez Road. This work will be done with heavy machinery. While the wood from these cleared trees will not be available for public use, it will be repurposed.

Please abide by posted and announced closures to assure your safety.

The closed trails are the Two-Mile Mesa Trail and the southern half of the Fitness Trail. The northern part of the Fitness Trail, the running track, and the road surrounding the running track will remain open.

Removal activities will begin August 21, 2019 and will continue in to December 2019. Individual trails and areas may reopen as work there finishes. The interactive trail map will be kept up to date with current trails closure status.

Los Alamos Area Trails application
Los Alamos Area Trails Web Map Application

Maintaining our Trails

Recreational trails use at Los Alamos National Laboratory has always been highly valued as one of the benefits of working and living in Los Alamos County. Laboratory trails are uniquely located on Department of Energy (DOE) land. Continued public access is conditioned upon treating the land and its resources with care and consideration. Please continue to notify the Trails Management program of any concerns about the trails.

Trail users should not attempt to clear downed trees or other major obstructions on any Laboratory trails, as the trails are on DOE land and some trails present unique hazards, which are posted at each trailhead kiosk.

Input on trails from trail users is paramount to successful maintenance and care of the trails. To report a trail condition or concern or to contact the Trails Management Program, email trails@lanl.gov.

Trail Use

Some Laboratory trails are open to the public whereas others are only open to Laboratory badge holders. Some trails allow dogs, horses, and bicycles while these are prohibited on other trails. It is your responsibility to understand the rules of a particular trail.

Trails are open from dawn to dusk, however trails and trail segments shown in red on trail maps are closed to all entry.

Hike open trails at your own risk; carry water, and beware of weather conditions, hazards, and wildlife.

Please leave no trace and pack out your trash.

Trail Monitoring

Laboratory trails in the White Rock area (TAs 70/71) are actively patrolled by Bandelier National Monument rangers through an agreement between the National Park Service and the Department of Energy.

Other Lab trails may be monitored by the Laboratory's Protective Force.

You are required to acknowledge and comply with law enforcement requests and directions.

Prohibited Activities & Items

The following activities and items are strictly prohibited on Laboratory trails.

  • alcohol consumption
  • camping
  • collecting natural or cultural materials
  • digging or ground disturbance
  • disorderly behavior
  • disturbing archaeological resources
  • dumping or disposal of trash
  • firearms
  • fires
  • fireworks
  • geo caching
  • hunting or trapping
  • memorialization
  • motorized vehicles (unless performing official LANL business)
  • smoking
  • weapons
  • wood gathering
Questions, Comments & Concerns

Report illegal or suspicious activity to: (505) 667-6211

To send general inquiries or feedback: trails@lanl.gov

Dan Pava, Chair
LANL Trails Working Group
(505) 667-7360

Karla Sartor
LANL Trails Working Group
(505) 667-8719