| Month |
Race Name |
Events |
Location |
Near |
|
| August |
Katcina Mosa 100K Mountain Run |
100 km |
UT, United States |
Provo |
|
| August |
Baker Trail UltraChallenge |
50 mi |
PA, United States |
Pittsburgh |
|
| August |
Leadville Trail 100 |
100 mi |
CO, United States |
Leadville |
|
| August |
Montana de Oro Trail Runs |
50 km, 25 km, 12 km, 8 km |
CA, United States |
Los Osos |
|
| August |
Pikes Peak Ascent |
13.3 mi |
CO, United States |
Manitou Springs |
|
| August |
Bulldog 50K Ultra / 25K Trail Run |
50 km, 25 km |
CA, United States |
Calabasas |
|
| August |
Golden Gate Headlands 50K |
50 km |
CA, United States |
Sausalito |
|
| August |
Grand Teton Races |
100 mi, 50 mi, 26.2 mi |
WY, United States |
Alta |
|
| August |
Meeteetse Absaroka Challenge Mountain Run |
15 km, 10 km, 5 km |
WY, United States |
Meeteetse |
|
| August |
10,000 Meters at 10,000 Feet Run |
10 km |
CO, United States |
Steamboat Springs |
|
| August |
Go Home Via The Hanes Valley |
30 km, 22 km, 15 km |
BC, Canada |
North Vancouver |
|
| August |
BULLDOG 25K MALIBU CANYON |
25 km, 8 mi |
CA, United States |
Malibu |
|
| August |
Jupiter Peak Steeplechase |
16 mi |
UT, United States |
Park City |
|
| August |
The East Bay Enchantment |
10 mi, 10 km, 5 km |
CA, United States |
Castro Valley |
|
| August |
The Northstar at Tahoe™ Nirvana Mountain Trail Run |
10 km |
CA, United States |
Truckee |
|
| August |
Squaw Valley Mountain Run |
3.6 mi |
CA, United States |
Truckee |
|
| August |
Green Lakes Endurance Runs |
100 km, 50 km |
NY, United States |
Fayetteville |
|
| August |
Germantown 50K |
50 km |
OH, United States |
Dayton |
|
| August |
The Moose Ultra |
300 km |
ON, Canada |
Tobermory |
|
| August |
Continental Divide Trail Race |
10 km |
NC, United States |
Laurel Springs |
|
| August |
River Valley Run 10k Trail Run |
10 km |
MD, United States |
Manchester |
|
| August |
Summer Trail Series |
6 mi |
AZ, United States |
Tucson |
|
| August |
Eagle Creek Trail Full/Half Marathon and 15K/5K |
26.2 mi, 13.1 mi |
IN, United States |
Indianapolis |
|
| August |
Dirt Devil Racing Series Stairway to Heaven 15K |
15 km |
CA, United States |
San Diego |
|
| August |
Skyline Mountain Marathon and Half |
26.2 mi, 14.1 mi |
UT, United States |
Ogden |
|
| August |
Leadville Trail10k Run |
10 km |
CO, United States |
Leadville |
|
| August |
Mountain Chile Cha Cha |
15 mi, 7 mi, 5 km |
CO, United States |
Pagosa Springs |
|
| August |
Aspen Backcountry Marathon |
26.2 mi |
CO, United States |
Aspen |
|
| August |
The Beast of Burden Summer 100 |
100 mi, 50 mi |
NY, United States |
Lockport |
|
| August |
Heiko's Hellish Half |
25 km |
BC, Canada |
Fernie |
|
| August |
Kettunen Center 5K Trail Run/Walk |
5 km |
MI, United States |
Cadillac |
|
| August |
Golden Beaver Trail Half Marathon |
13.1 mi |
CO, United States |
Red Feather |
|
