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ImAthlete 
ATRA Event Standards Criteria
Corporate Members Club Members
acidotic Racing
Active at Altitude
Atlas Snow-Shoe
AZ Trail Race
Badwater®
Beach Running Championships
Brazen Racing
Desert Dash
Fire Tool
Fleet Feet-Boulder, CO
GECKO
Great Lakes Endurance
Greater Omaha Area Trail Runners (G.O.A.T.z)
ICESPIKE
Injinji
Inov-8
International Mountain Biking Association
International Skyrunning Federation
iRunFar.com
Junction 311 Endurance Sports
La Sportiva
LIVEALITY
Marathon Majic, LLC
Milt's Stop and Eat
Monkey Races, LLC
Mountain Ultra Trail Blog (Richard Bolt)
OrthoLite
Pikes Peak Marathon, Inc.
PikesPeakSports.US
Project Athena
Prs Fit
Ragnar Events LLC
Rainshadow Running Club LLC
Recover-Ease
Run the Alps
Runner's World
RunningShoes.com
Running Times
Running USA
Sage to Summit
Salomon Running
Shadowcliff Lodge
Skelton Law Racing Series
Snowshoe Magazine
Switch Vision
Tejas Trails
Trail Runner Magazine
UltraRunning Magazine
Ultraspire
Vail Mountain Running Series
Vasque
VFuel
Wicked Fast Sports Nutrition
Wilkes Barre Racing
Estes Park Running Club
Gadsden Runners Club
Greater Long Island Running Club
Houston Area Trail Runners
Mountain Divas
Northern Arizona Trailrunners Assoc
Project Athena Foundation
Run Momma Run
Sterling College
Trailhead Running
Trail Runner
Trail Runners Club
Trail WhipAss

Race Members

A Spring Beauty Ultra Run
Andes Adventures
Angry Tortoise 25K
Autumn Trail Series
Bear Chase Race
Chesebro5030
Cheyenne Creek Trails "Driftless"1/2 Marathon
Cow Pie Trail Run
Dirt Devil Race Series
Green Lakes Endurance Runs
Hampshire 100
Hardscrabble Mountain Trail Run
Moab Trail Marathon
Mt Ashland Hill Climb Run
Quadzilla 15K
River, Roots & Ruts Trail Half-Marathon
River Valley Run
Ruidoso Grindstone Trail Runs
Run at the Rock
Running DAVENTURA
Save the Wildlife 5K
Taos Ski Valley Up and Over 10K
Teva Paint Mines 6K
TransRockies
Vail Victory Races / Trail Marathon
Vasque Golden Leaf Half Marathon
WRUT 'n Run
XTERRA SoCal Trail Run Series





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