| Month |
Race Name |
Events |
Location |
Near |
|
| August |
Cinderella Trail Run (5 Mile, Half Marathon, 30K, Marathon, 50K) |
50 km, 26.2 mi, 30 km, 13.1 mi, 5 mi |
CA, United States |
Oakland |
|
| 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 |
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 |
Angeles Crest 100-Mile Endurance Run |
100 mi |
CA, United States |
Wrightwood |
|
| 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 |
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 |
Summer Trail Series |
6 mi |
AZ, United States |
Tucson |
|
| August |
Eagle Creek Trail Full/Half/Quarter Marathon |
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 |
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 |
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 |
Marquette Trail 50 |
50 mi, 50 km |
MI, United States |
Marquette |
|
| August |
Teton Pass Kicker |
13.1 mi |
WY, United States |
Wilson |
|
| August |
Into the Wild Rockin' Summer Run 8k #2 |
8 km |
CA, United States |
Orange |
|
| August |
Into the Wild Rockin' Summer Run 8k #3 |
8 km |
CA, United States |
Orange |
|
| August |
Into the Wild Rockin' Summer Run 8k #1 |
5 km |
CA, United States |
Orange |
|
| August |
Stairway to Heaven 15K Trail Run |
15 km |
CA, United States |
San Diego |
|
| August |
Run by the Sea |
12 km |
CA, United States |
Santa Cruz |
|
| August |
The Mountain Ultra |
220 km |
CO, United States |
Crested Butte |
|
| August |
Canalway Classic 5K |
5 km |
OH, United States |
Canton |
|
| August |
ADK 80k Trail Run |
80 km |
NY, United States |
Keene Valley |
|
| August |
Black Diamond Running Series: Top of the Mountain 10K |
10 km |
PA, United States |
Scranton |
|
| August |
Summer Breeze Half Marathon/10K/5K |
13.1 mi, 10 km, 5 km |
CA, United States |
San Leandro |
|
| August |
Montana de Oro Trail Runs |
50 km, 25 km, 12 km, 8 km |
CA, United States |
Los Osos |
|
| August |
Summer Splash 10K and 5K Trail Races |
10 km, 5 km |
NC, United States |
Spruce Pine |
|
| August |
Lou's Grand Slam 5K |
5 km |
PA, United States |
Lewisberry |
|
| August |
Bear Creek Half Marathon/10K/5K |
13.1 mi, 10 km, 5 km |
CA, United States |
Martinez |
|
| August |
Salt Point Trail Run |
50 km, 26 km, 11 km |
CA, United States |
Jenner |
|
| August |
Bigfoot 200 |
215 mi |
WA, United States |
Cougar Mountain |
|
| August |
Lost Turkey Trail Race |
26.2 mi |
PA, United States |
Claysburg / Blue Knob |
|
| August |
Moonlight Bootlegger 5k - Ionia |
3.1 mi |
MI, United States |
Ionia |
|
| August |
Summit Trail Running Series Race #6 |
11 km, 7 km |
CO, United States |
Breckenridge |
|
| August |
Breckenridge Hunky Dory Half Marathon |
13.1 mi |
CO, United States |
Breckenridge |
|
| August |
Twisted Branch Trail Race |
100 km |
NY, United States |
Canandaigua |
|
| August |
Race Thru The Redwoods |
6.2 mi, 1 mi |
CA, United States |
Felton |
|
| August |
Discrete Peak Series - Snowbird |
8.9 mi |
UT, United States |
Snowbird |
|
| August |
Delaware Dash 4 Mile Trail Run |
4 mi |
PA, United States |
Bangor |
|
| August |
XTERRA Trail Run Castle Rock |
20 km |
CO, United States |
Castle Rock |
|
| August |
Ragnar Trail Rainier-WA, Presented by Salomon |
120 mi |
WA, United States |
Crystal Mountain |
|
| August |
Habanero Hundred |
100 mi, 100 km, 50 km |
TX, United States |
Smithville |
|
| August |
Next Generation |
10 km, 5 km, 1 mi |
TX, United States |
Cat Spring |
|
| August |
Skyline 50K Endurance Run |
50 km |
CA, United States |
Castro Valley |
|
| August |
EX2 Adventures Blue Crab Bolt 5K/10K Trail Runnning Series-Race #3 |
10 km, 5 km |
MD, United States |
Clarksburg |
|
| August |
Ragnar Trail Appalachians-WV, Presented by Salomon |
120 mi |
WV, United States |
Morgantown |
|
| August |
Night Moves |
26.2 mi, 13.1 mi, 10 km, 5 km |
TX, United States |
Cat Spring |
|
| August |
Hardwood Trail Running Series Race #4 |
10 km, 5 km, 1.5 km |
ON, Canada |
Barrie |
|
| August |
11,053' Summer Ezakimak Challenge |
5 km |
CA, United States |
Bishop |
|
| August |
4,8,12 mile Trail Run under Power Lines |
12 mi, 8 mi, 4 mi |
PA, United States |
Safe Harbor |
|
| August |
Brayden's Trail Of Strength |
6.2 mi |
PA, United States |
Wellsboro |
|
| August |
Crazy Bob's Bair Gutsman |
11 mi |
UT, United States |
Fruit Heights |
|
| August |
Rendezvous Mountain Hillclimb |
6.1 mi |
WY, United States |
Jackson |
|
| August |
Silverton Ultra Dirty |
100 mi, 100 km, 60 km |
CO, United States |
Silverton |
|
| August |
Kirkwood's Ultras |
100 km, 46 mi, 50 km |
CA, United States |
Kirkwood |
|
| August |
Almaden Hills Trail Run - Summer |
50 km, 26.2 mi, 30 km, 13.1 mi, 8 mi, 10 km, 5 km |
CA, United States |
San Jose |
|
| August |
Wildcat Mountain Trail Races - 10K/10M |
10 mi, 10 km |
CO, United States |
Littleton |
|
| August |
Bulldog 50K Ultra & 25K Trail Runs |
50 km, 25 km |
CA, United States |
Los Angeles |
|
| August |
Under Armour Mountain Running Series - Killington |
50 km, 25 km, 10 km, 5 km |
VT, United States |
Pittsfield |
|
| August |
Ragnar Trail- Vermont |
14.8 mi |
VT, United States |
West Windsor |
|
| August |
Long Trail 100 |
100 mi |
VT, United States |
Stowe |
|
| August |
13th Annual Brainy Day 5K & 10K Trail Run |
10 km, 5 km |
MI, United States |
Grand Haven |
|
| August |
Middle Path Ultra and Trail Race |
52 km, 26 km, 5 km, 2 km |
ON, Canada |
Peterborough |
|
| August |
Mid Mountain 50K |
50 km |
UT, United States |
Park City |
|
| August |
Moonshadow Half Marathon and 10k |
13.1 mi, 10 km |
CO, United States |
Colorado Springs |
|
| August |
Med Bow Rail Marathon and Half Marathon |
26.2 mi, 13.1 mi |
WY, United States |
Laramie |
|
| August |
Honey Stinger Emerald Mountain Epic |
26.2 mi |
CO, United States |
Steamboat Springs |
|
| August |
Blazin' Summer Sufferfest |
54 km, 36 km, 18 km, 10 km, 5 km |
TX, United States |
Dallas/Fort Worth |
|
| August |
Sly Park Lake Trail Run - Summer |
50 km, 26.2 mi, 18 mi, 13.1 mi, 8.5 mi, 10 km, 5 km |
CA, United States |
Pollock Pines |
|
| August |
Dahlgren Heritage Rail Trail |
50 km |
VA, United States |
King George |
|
| August |
Candle Creek Half Marathon |
21 km |
BC, Canada |
Clearwater |
|
| August |
Soldier Cutoff Hillduro - Run |
10 km |
IA, United States |
Pisgah |
|
| August |
Dynafit Berry Picker Trail Run |
4.6 mi |
CO, United States |
Vail |
|
| August |
Lory Summer Trail Series |
12 km, 10 km, 5 km, 5 km |
CO, United States |
Fort Collins |
|
| August |
Staunton Rocks! Marathon & Half |
26.2 mi, 13.1 mi |
CO, United States |
Pine |
|
| August |
Summit Trail Running Series Race #5 |
11 km, 7 km |
CO, United States |
Breckenridge |
|
| August |
Summit Trail Running Series Race #6 |
14 km, 8 km |
CO, United States |
Breckenridge |
|
| August |
Kokopelli Classic |
13.1 mi, 8 mi, 5 km, 0 mi |
CO, United States |
Fruita |
|
| August |
Uyghur Endurance Challenge |
24 mi |
NJ, United States |
princeton |
|
| August |
Red Moon Trail Runs - 7K, 12K, 20K & 25K |
25 km, 20 km, 12 km, 7 km |
OH, United States |
Columbus |
|
| August |
Last Buckeye Standing Backyard Ultra |
100 mi |
OH, United States |
Columbus |
|
| August |
3H Trail Half Marathon |
50 km, 13.1 mi |
VA, United States |
King George |
|
| August |
New Castle Dirty Dozen Trail 10K |
10 km |
CO, United States |
New Castle |
|
| August |
Dynafit Arrowhead Half Marathon & 5k |
13.1 mi, 5 km |
CO, United States |
Edwards |
|
