Aug32026
Iola, WI
2026 First Mondays Summer Trail Series
First Mondays Summer Trails Series: August
Loading the next section…
Race finder
Find the race that earns your training.
Discover by place and distance, then use the official organizer for current registration, course, cutoff, crew, and pacer rules.
Aug12026
Grand Marais, MN
2026 Fisherman's Picnic Trail Run
10k Trail Race
Aug152026
New Glarus, WI
2026 New Glarus Woods Trail Run
16k Trail Run8k Trail Run5k Trail RunKids 1k Trail Run -- FREE
Sep122026
Telluride, CO
53rd Annual Imogene Pass Run
53rd Annual Imogene Pass Run
Aug22026
Mendon, NY
5th Annual Seize the Day: Amer’s Epilepsy Trail Race 5K/10K and One Mile Walk/Fun Run
5th Annual Seize the Day 5K5th Annual Seize the Day 10K
Aug152026
Sioux Falls, SD
605 Trail Fest
8 Mile Trail Race4.5 Mile Trail Race
Jul302026
Portland, ME
After Work Dirt Trail Races fka Tiny Trails
Falmouth Community Park Trails
Aug12026
Clarksburg, MD
Blue Crab Bolt Trail Run - Little Bennett
5K10K
Aug302026
Lone Tree, CO
Bluffs Run 8K
8K
Jul312026
Horseshoe Bend, ID
Boise Front Trail Festival
Boise Front Trail Festival: 5 Mile CourseBoise Front Trail Festival: 10 Mile CourseBoise Front Trail Festival: Hill Climb
Sep52026
Canton, GA
Brandon English 5K -ish Trail Run
Brandon English 5K -ish Trail Run
Aug12026
Wellsboro, PA
Brayden's Trail Of Strength
Brayden's Trail Of Strength- 10k
Sep52026
Taos Ski Valley, NM
Bull of the Woods Trail Races
Full MarathonTSV Half MarathonNorthside Half Marathon
Sep52026
Fincastle, VA
Camp Bethel PEP! 5K Run/Walk
Camp Bethel PEP! 5K Run/Walk
Aug32026
Gansevoort, NY
Camp Saratoga 5K Trail Series
Camp Saratoga 5K Trail Series #4Camp Saratoga 5K Trail Series #5
Aug292026
Kotzebue, AK
Cape Blossom Marathon
Cape Blossom MarathonCape Blossom half-marathon
Aug82026
Burnet, TX
Capt'n Karl's Trail Series - Reveille Peak Ranch
Reveille Peak Ranch 60KReveille Peak Ranch 30KReveille Peak Ranch 20KReveille Peak Ranch 10K
Sep52026
Gorham, ME
Cherry Hill Farm Ultra
50k Trail Race25k Trail Race10k Trail Race
Sep122026
Beecher, IL
Chicago Trail Running Festival
5K10K10K Ruck20K
Aug152026
Alta, UT
Cirque Series - Alta, UT
Sport Division (beginner / intermediate)Expert DivisionPro Division
Sep52026
Keystone, CO
Cirque Series - Arapahoe Basin, CO
Sport Division (beginner / intermediate)Expert DivisionPro Division
Aug292026
Grand Targhee, WY
Cirque Series - Grand Targhee, WY
Sport Division (beginner / intermediate)Expert DivisonPro Division
Sep52026
Butte Meadows, CA
Colby Mountain Trailfest
5k12k24k
Aug292026
Steamboat Springs, CO
Continental Divide Trail Run
5 Mile16 Mile50K
Aug292026
Saint Charles, MO
Corps of Discovery Trail Races
Half Marathon5 Mile
Aug222026
Mill Spring, NC
Dark Horse Trail Series (26.2 - 13.1 - 10k)
Dark Horse MarathonDark Horse Half MarathonDark Horse 10k
Jul292026
Flower Mound, TX
DFW Burning Soles Trail Series Race 6
10K5K
Aug52026
Flower Mound, TX
DFW Burning Soles Trail Series Race 7
10K5K
Aug122026
Flower Mound, TX
DFW Burning Soles Trail Series Race 8
10K5K
Aug12026
Terre Haute, IN
DINO Gravel Triathlon
10K Trail Run
Aug72026
Duluth, MN
Duluth Trails Festival
Forest Track Heavy Half Marathon (Summit North Running Event)Mountain Lap 5K (Summit North Running Event)The Creeks 8-Mile (Summit North Running Event)Hill Climb & Descent (Summit North Running Event)
Jul302026
Durango, CO
Durango Brewer's Trail Series
High Trestle Finale - Benefiting The Hive
Aug82026
Waterville, PA
Eastern States 100
Eastern States 100 - Supported Class (Crew/Pacers Allowed)Eastern States 100 - Unsupported Classes (NO CREW/NO PACERS)
Aug252026
Bellvue, CO
Eltuck Valley 12K - Lory Summer Trail Series
Eltuck Valley 12k
Aug222026
Evergreen, CO
Evergreen Trail Race Series
Evergreen Trail Race Series
Aug82026
Flushing, MI
Flushing Farms 5K & 10K Trail Run and Walk
5K Run5K Walk10K Run
Jul282026
Cleveland, OH
Full Moon Trail Series
4 Miler - South Chagrin3 Miler - Rocky River Nature Center5 Miler - South Mastick
Sep122026
Port Angeles, WA
GOAT Run
Half Marathon WAVE 1Half Marathon WAVE 2Marathon50K
Aug222026
South Hamilton, MA
Greenbelt's Vineyard Hill Trail Run
5k Trail Run - Members10k Trail Run - Members5k Trail Run - Non-members10k Trail Run - Non-members
Sep122026
Dardanelle, AR
Grit and Guts Trail Race 2026
Half Grit and Guts (13.1) @Mt. NeboFull Grit and Guts (20 miles) @Mt. Nebo
Aug212026
Cat Spring, TX
Habanero Hundred
Habanero 135100 Mile100 Kilometer50K
Aug142026
Hickory, NC
Hickory 5K Series
Lightning Bug Boogie 5K
Sep52026
Burnet, TX
Hill Country Triple Trail Run
Hill Country Triple 50k Day 1Hill Country Triple 26.2mi Day 1Hill Country Triple 13.1mi Day 1Hill Country Triple 10k Day 1
Aug12026
La Crosse, WI
Hixon4est RUD run
RUD run individualRUD run 2-3 person teamRUD run 4-6 person team
Aug82026
Inverness, FL
Hot August Night Trail Race
20 Mile Night Race10 Mile Night Race5 Mile Night Race
Aug112026
Bellvue, CO
Into the Hills Eltuck 10k
Into the Hills Eltuck 10k
Aug182026
Bellvue, CO
Into the Hills Eltuck 5k
Into the Hills Eltuck 5k
Oct172026
San Diego, CA
Lake Hodges Trail Festival
50K25k15KBernardo 10k Challenge
Sep122026
Marquette, MI
Lake Superior Shore Run
Half Marathon5K Run
Aug12026
Kalispell, MT
Last Herron Standing- Backyard Ultra
Last Herron Standing- Backyard ultra- Team relayKids fun run
Sep122026
Los Angeles, CA
Los Angeles Sunset Relays | 5K & Kid Run
Los Angeles Sunset Relay - Team of 2Los Angeles Sunset 5K
Aug152026
Ashland, NE
Lucky Bucket 5K Off-road run!
Lucky Bucket 5K Off-road Run.
Aug262026
Lynn, MA
Lynn Woods Relay
WCRC Lynn Woods Relay teams
Sep112026
Midway, UT
Mamele Mountains
Mamele Mountains Trail Race Regular TicketMamele Mountains Trail Race VIP TICKET
Sep62026
Auburn, CA
Mammoth Bar Trail Runs
Half Marathon10K
Sep122026
Spicewood, TX
Mellow Trail Race
Mellow 26.2 miMellow 13.1 miMellow 10kMellow 5k
Jul272026
Nashua, NH
Mine Falls Summer Trail Series
5 Mile: My Toe-tally "Rock"in SocksThe 5 Mile Dedication Run
Aug82026
Dubuque, IA
Mines of Spain Trail Races
Half Marathon7 Mile4 Mile
Aug12026
Owensboro, KY
MKK's Rugged Race Presented by Independence Bank
5K Trail Run10K Trail Run
Aug12026
Ida Grove, IA
Moorehead Park Trail Mazathon
Moorehead Park Trail MazathonMoorehead Park Trail 1/3 MazathonMoorehead Park Trail 2/3 Mazathon
Sep122026
Saugatuck, MI
Mt. Baldhead Challenge
10K+ (7 miles)Half Marathon
Sep122026
San Felipe, TX
Night Moves Trail Races
5K10KHalf MarathonMarathon
Aug292026
Weslaco, TX
Night Owl Trail Run
Night Owl 5kNight Owl 10kNight Owl 10 MilerNight Owl Kids Run
Aug162026
Red Lodge, MT
Nitty Gritty Off Road Race
Solo Half MarathonMarathon Relay -6 peopleHot LapSolo Marathon
Aug232026
Speculator, NY
OakRunner
OakRunner Trail Run
Aug152026
Seattle, WA
One Step Closer
3 Hour6 Hour12 Hour18 Hour
Aug292026
Amarillo, TX
Outlast Amarillo – Night Out Edition
6 Hour Night Out Challenge
Aug152026
Johnson City, TX
Outlast Austin – Night Out Edition
6 Hour Night Out Challenge
Aug212026
Oklahoma City, OK
Outlast OKC – Night Out Edition
6 Hour Night Out Challenge6 Hour Night Out Challenge - Friday
Sep52026
Shreveport, LA
Outlast Shreveport – Night Out Edition
6 Hour Night Out Challenge
Aug12026
Park City, UT
Park City Trail Series
Half Marathon
Aug82026
Woodland Park, CO
Pat's Pony Express
Pat's Pony Express - 16 MilePat's Pony Express - 8 Mile
Aug12026
Barkhamsted, CT
Pete Hawley People's 7
Pete Hawley People's 7
Aug12026
Oxford, IA
Prairie Dairy 5k
5k
Sep52026
Verona, WI
Prairie Dog Trail Run
Prairie Dog Trail Run - 5KPrairie Dog Trail Run - 10K
Aug82026
Cooke City, MT
Prospector's 50k | 30k
50k30kFully Cooked
Aug12026
Billings, MT
Quitcherbitchen' Trail Run
QTR 8miQTR 6miQTR 6mi (Under 13 years old)QTR 4mi
Aug222026
Ruidoso, NM
Ruidoso Grindstone Trail Runs
13.8 Mile4 Mile
Sep52026
Niantic, CT
Run for The Hills
Run for the Hills
Aug12026
Rickreall, OR
Run for the Oaks
10K Run5K Run
May12027
Santa Clarita, CA
Santa Clarita Trail Race
5K10K15K30K
Aug222026
Felton, CA
Santa Cruz Trail Run
30kHalf Marathon10k
Aug222026
Ozark, IL
Shawnee Hills Trail Races
100 Miler100K50KHalf Marathon
Aug12026
Fairplay, CO
Sheep Mountain Trail Runs
Half Marathon50k50-Mile
Sep52026
Lock Haven, PA
Smallfoot Mountain Weekend
Smallfoot Trail Fest
Aug82026
Missoula, MT
Snowbowl 15K
Snowbowl 15K
Aug72026
Duluth, MN
Summit North Trail Runs
Forest Track Heavy Half MarathonMountain Lap 5KThe Creeks 8-MileHill Climb & Descent
Sep122026
Talkeetna, AK
Talkeetna Trail Race
25k10k
Aug12026
Taos Ski Valley, NM
Taos Ski Valley Up & Over Trail Run Weekend
Up & Over 10kVertic-AL's Vert-K10k Double TroubleUp & Dn Kids Run
Aug202026
Helena, MT
The Augúst - Montana's Second Oldest Footrace
5k Youth (0-19)
Aug152026
Colorado Springs, CO
The Cheyenne Mountain Run
5K10K25K
Aug222026
St Louis, MO
The Next Loop Endurance Series | Cliff Cave Park
The Next Loop Endurance Series 5K, 10K, 1/2 Marathon, Marathon, 50K
Aug82026
Palatine, IL
The Next Loop Endurance Series | Deer Grove East
The Next Loop Endurance Series 5K, 10K, 1/2 Marathon, Marathon, 50K
Aug12026
Foristell, MO
The Next Loop Endurance Series - Indian Camp Creek
The Next Loop Endurance Series 5K, 10K, 1/2 Marathon, Marathon, 50K
Aug162026
Brownsville, VT
The Overland Trail
Overland TrailOverland PathOverland Trophy
Sep112026
Big Sky, MT
The Rut Mountain Runs
Trifecta (50K,28K,VK)50k28k21k
Aug12026
Ida Grove, IA
Trail of the Dragon 50K/50mile Run
Trail of the Dragon 50KTrail of the Dragon 50 mile Run
Sep122026
Buena Vista, CO
Trail Sisters Women's Half Marathon & 10k
Trail Sisters Women's Half MarathonTrail Sisters Women's 10k
Aug222026
Andrews, IN
Tree Trail Trot
5K Run
Aug152026
Park City, UT
Triple Trail Challenge
Mid Mountain 50K