Our mission: To represent and promote trail and mountain running

Every individual member of ATRA at the $35 level receives a one year subscription to both Trail Runner and Running Times magazines as part of their annual membership. Become a member today! And be sure to check out Running Times trail section edited by ATRA president Adam Chase.
Running Times Magazine Trail Runner Magazine

Running Warehouse
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Corporate Members Club Members Race Members
Active at Altitude
Alpine Dentistry
American Running Guides
Collard Construction Corporation
Federation for Sport at Altitude
Fleet Feet-Boulder, CO
Fuel Belt
Green Path Company
Injinji Socks
Kinesys Performance Sunscreen
La Sportiva
La Sportiva Front Range Trail Frenzy
OrthoLite
Recover-Ease
Runner’s World
Running Times
Running USA
Salomon Sports
Sierra-Cascade Adventure Racing Sports
Steamboat Running Series
Teva
Trail Runner Magazine
Trail Running Tours
TransRockies
Unique Global Tours
University of the Rockies
Vail Mountain Running Series
Windermere
Xdogevents
XTERRA Trail Running Series
ZombieRunner
 Adventure CORPS
Baytrailrunners.com
Central Mass Striders (CMS)
Dolphin South End Runners
Event Marketing Group
MIT Community Running Club
Mountain Divas
Northern Arizona Trailrunners Assoc
O.C. Mudslingers
Oklahoma Trail Runners Assoc.
Orange County Trail Runners
Trail Runners Club

USMRT Sponsors
 USMRT Website
Teva
Sporthill
Windermere
OrthoLite
Wicked Fast
Fleet Feet Sports

 Andes Adventures
Badwater Ultramarathon
Boulder Roubaix 15K
Danby Down and Dirty 10K/20K
Green Lakes Endurance Runs
Lead King Loop 25K
Lean Horse Hundred, Half hundred
Leatherman's Loop 10K
Loon Mountain Trail Race
Grand Island Trail Marathon
Moose Mountain Trail Races
Mt. Tam Trophy Race
Northfield Mountain Race
Out of Bounds Half Marathon
River, Roots & Ruts Trail Half-Marathon
Run at the Rock
Spillway Classic
Squaw Valley Mountain Run
Taos Ski Valley Up and Over 10K
Teva Paint Mines 6K
Tussey mOUnTaiNBACK 50 Mile Relay and Ultramarathon
Wild Rockies
Ultimate XC Moab Edition
XTERRA SoCal Trail Run Series
RRCA USATF  World Mountain Running Association  GoodSearch: You Search...We Give!
Running USA
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