August 2021 Half Marathons

NOTE: Many races have been cancelled, postponed, or switched to virtual-only due to the ongoing COVID-19 pandemic. We’re doing our best to update information as soon as possible, but check the race’s website for the latest details.

See all August 2021 half marathons across the USA below, or click Race Calendars above to see each state’s calendar. For each race, you’ll find course maps, elevation profiles, reviews and info on how to register.


Sunday, August 1

Monday, August 2 – Friday, August 6

Saturday, August 7

Sat Aug 7 3H Trail Half Marathon King George VA
Sat Aug 7 Beast of Big Creek Trail Race Hoodsport WA
Sat Aug 7 Bluegrass Reaper Challenge Marathon Half Marathon 50K & 10K Berea KY
Sat Aug 7 Bob Marshall Trail Half Marathon & 10K Seeley Lake MT
Sat Aug 7 Catherine Creek Half Marathon 5K & 1-Mile Union OR
Sat Aug 7 Galloping Gertie Half Marathon 10K & 5K Gig Harbor WA
Sat Aug 7 Go Far Woman Half Marathon 10-Mile 10K & 5K Fargo ND
Sat Aug 7 Haulin' Aspen Marathon Half Marathon & 6.5-Mile Bend OR
Sat Aug 7 Hell of a Half Marathon Exeter CA
Sat Aug 7 High Mountain Half Marathon 10K & 5K Lakeside AZ
Sat Aug 7 Hobble Creek Half Marathon Mapleton UT
Sat Aug 7 Huckleberry Half Marathon 15K 10K & 5K Welches OR
Sat Aug 7 The Legend Half Marathon 10-Mile & 5-Mile Laingsburg MI
Sat Aug 7 MAYC Mahomet Half Marathon & 5K Mahomet IL
Sat Aug 7 National Watermelon Day Half Marathon 10K & 5K Waukesha WI
Sat Aug 7 Ocean Beach Kelley Half Marathon New London CT
Sat Aug 7 Old Toby's Lost Trail Half Marathon Sula MT
Sat Aug 7 Parowan City Half Marathon & 5K Parowan UT
Sat Aug 7 Point to Point Half Marathon Montpelier VT
Sat Aug 7 Race for the Kids Half Marathon 10-Mile 5-Mile & 5K St. Paul MN
Sat Aug 7 Riley Trails Marathon Half Marathon & 10K Holland MI
Sat Aug 7 Rodeo Valley Trail Run Sausalito CA
Sat Aug 7 Run Manchester Half Marathon 10-Mile 10K & 5K Manchester MI
Sat Aug 7 Run Michigan Cheap Half Marathon 10K & 5K – Ionia Ionia MI
Sat Aug 7 Smelter City Scramble Half Marathon 10K & 5K Anaconda MT
Sat Aug 7 Suncadia Half Marathon & 5K Cle Elum WA
Sat Aug 7 Ten Sleep Canyon Half Marathon & 5K Ten Sleep WY
Sat Aug 7 Wapsi Wiggle Half Marathon & 5K Riceville IA

Sunday, August 8

Saturday, August 14

Sat Aug 14 Badlands Trail Run Medora ND
Sat Aug 14 Beachfront Run Half Marathon 10K & 5K Ventura CA
Sat Aug 14 Beaver Canyon Half Marathon Beaver UT
Sat Aug 14 Boulder Rez Marathon 3/4 Marathon Half Marathon & 10K Boulder CO
Sat Aug 14 BurliMOT Half Marathon & 5K Minot ND
Sat Aug 14 Carderock Charge Half Marathon 10K & 5K Potomac MD
Sat Aug 14 Cheesehead Run Half Marathon 5K & Relay Hilbert WI
Sat Aug 14 Crater Lake Rim Runs Marathon Half Marathon & 6.7-Mile Crater Lake OR
Sat Aug 14 Dave McKay Memorial Half Marathon & 5K Flagstaff AZ
Sat Aug 14 Dragon's Den Half Marathon 10K & 5K San Antonio TX
Sat Aug 14 Fun in the Sun Half Marathon 15K 10K & 5K Long Beach CA
Sat Aug 14 Garlic Festival Half Marathon 10K & 5K North Plains OR
Sat Aug 14 Georgetown to Idaho Springs Half Marathon Georgetown CO
Sat Aug 14 Goodyear Half Marathon & 10K Akron OH
Sat Aug 14 Happy Half Marathon Springfield OH
Sat Aug 14 Hillbilly Half Marathon 10K & 5K Ozark MO
Sat Aug 14 Hot Trot Half Marathon 10K & 5K Dallas TX
Sat Aug 14 Leinenkugel's Pure Water Days Races Half Marathon Chippewa Falls WI
Sat Aug 14 Med Bow Rail Marathon & Half Marathon Laramie WY
Sat Aug 14 Real Freedom Races – Breaking the Chains of Human Trafficking Half Marathon 10K & 5K Necedah WI
Sat Aug 14 Run Elevated Half Marathon Sandy UT
Sat Aug 14 Run the Rockies Trail Half Marathon & 10K Frisco CO
Sat Aug 14 RUNegades Warrior Trail Half and Quarter Marathon Schickshinny PA
Sat Aug 14 Running Between the Vines Half Marathon 5-Mile & 5K Jackson MI
Sat Aug 14 Running the Rapids Half Marathon & 5K Cohasset MN
Sat Aug 14 Skyline Mountain Marathon Half Marathon & 55K Eden UT
Sat Aug 14 Slate Valley Scramble Half Marathon & 8K Poultney VT
Sat Aug 14 Truist Corporate Cup Half Marathon & 5K Charlotte NC
Sat Aug 14 Volcano's 'Ohi'a Lehua Runs Volcano HI
Sat Aug 14 Watoga Mountain Trail Challenge Half Marathon & 5K Marlinton WV

Sunday, August 15


Saturday, August 21

Sat Aug 21 All-Out Runapalooza Half Marathon 10K & 5K Arvada CO
Sat Aug 21 Alzheimer's Half Marathon & 5K Dubuque IA
Sat Aug 21 Asheville Half Marathon & 10K Asheville NC
Sat Aug 21 Chupacabra Half Marathon & 10K Huntsville AL
Sat Aug 21 Coopers Rock Half Marathon & 50K Morgantown WV
Sat Aug 21 Golden State Half Marathon 50K 35K & 10K Monterey CA
Sat Aug 21 Harder than Hell Half Marathon Nixa MO
Sat Aug 21 Herriman Trail Series Half Marathon Herriman UT
Sat Aug 21 Jenkins Mountain Scramble Trail Half Marathon & 10K Paul Smiths NY
Sat Aug 21 Kodiak Half Marathon & 10K Big Bear Lake CA
Sat Aug 21 Krall Half Marathon Two Rivers WI
Sat Aug 21 Main to Main Marathon Half Marathon 10K & 5K Osage IA
Sat Aug 21 Mount Sneffels Marathon & Half Marathon Ouray CO
Sat Aug 21 New River Gorgeous Trail Run Half Marathon Minden WV
Sat Aug 21 Nitty Gritty Off Road Race Marathon Half Marathon & Relays Red Lodge MT
Sat Aug 21 Post Canyon Half Marathon & 50K Hood River OR
Sat Aug 21 Provo Canyon Half Marathon Lindon UT
Sat Aug 21 RAMP River Run Half Marathon 5K & 3K Rockford IL
Sat Aug 21 Run with the Horses Marathon Half Marathon & 10K Green River WY
Sat Aug 21 Sly Park Lake Trail Run Pollock Pines CA
Sat Aug 21 St. Michaels Running Festival Half Marathon 10K & 5K St. Michaels MD
Sat Aug 21 Summer Blast at Redmond Watershed Half Marathon 10-Mile & 5-Mile Redmond WA
Sat Aug 21 Tour de La Porte Half Marathon & 5K La Porte IN
Sat Aug 21 Underdown Trail Races Marathon Half Marathon & 50K Gleason WI
Sat Aug 21 Valkyrie Midway Marathon & Half Marathon Midway UT
Sat Aug 21 Wausau Marathon Half Marathon & Relay Wausau WI

Sunday, August 22

Saturday, August 28

Sat Aug 28 Allerton Trails Half Marathon & 10K Monticello IL
Sat Aug 28 Ashland Half Marathon Ashland VA
Sat Aug 28 Angel Island Half Marathon & 10K Tiburon CA
Sat Aug 28 Bay to Beacon Half Marathon 10K & 5K Lincoln MI
Sat Aug 28 Canby Dahlia Run Half Marathon & 10K Canby OR
Sat Aug 28 End of Summer Half Marathon Rockaway Park NY
Sat Aug 28 Lake Country Half Marathon Oconomowoc WI
Sat Aug 28 Louisville Trail Race Half Marathon 10K & 5K Louisville CO
Sat Aug 28 Mendocino Running Festival Half Marathon & 10K Mendocino CA
Sat Aug 28 Mesa Falls Marathon Half Marathon 10K & 5K Ashton ID
Sat Aug 28 Moonlight on the Falls Marathon Half Marathon & Quarter Marathon Davis WV
Sat Aug 28 Mount Nebo Marathon Half Marathon & 5K Payson UT
Sat Aug 28 Motus Green River Lake Half Marathon & 10K Campbellsville KY
Sat Aug 28 Mt. Madonna Challenge Half Marathon 10K & 5K Gilroy CA
Sat Aug 28 Nebraska State Fair Marathon Half Marathon & 5K Grand Island NE
Sat Aug 28 Night Moves Trail Race Marathon Half Marathon 10K & 5K San Felipe TX
Sat Aug 28 Path to Opioid Prevention Half Marathon & 5K Riverdale UT
Sat Aug 28 Porters Half Marathon 10K & 5K Draper UT
Sat Aug 28 Rock the Parkway Half Marathon & 5K Kansas City MO
Sat Aug 28 Scheels Healthy Human Race Half Marathon & 5K Rochester MN
Sat Aug 28 Short and Sweet Cupcake Run Half Marathon 10K & 5K Snohomish WA
Sat Aug 28 Staunton Rocks! Marathon & Half Marathon Pine CO
Sat Aug 28 Summer Sizzle Half Marathon 15K 10K & 5K Long Beach CA
Sat Aug 28 Sunrise Half Marathon Sunrise FL
Sat Aug 28 Thirsty 13 Half Marathon Durango CO
Sat Aug 28 Top of Utah Half Marathon Logan UT

Sunday, August 29

Sun Aug 29 Beach and Back Half Marathon & 5K Mashpee MA
Sun Aug 29 Black Diamond Express Half Marathon & 5K Mendon NY
Sun Aug 29 Blueberry Cove 13.1 Half Marathon Tenants Harbor ME
Sun Aug 29 Burning Coal Marathon & Half Marathon Rimersburg PA
Sun Aug 29 Cook Forest Half Marathon & 5K Cooksburg PA
Sun Aug 29 Corporal Cole Half Marathon & 5K Norridgewock ME
Sun Aug 29 Hellbender Half Marathon & 5K Bear Gap PA
Sun Aug 29 Millennium Meadows Marathon Half Marathon & 10K Grand Rapids MI
Sun Aug 29 Santa Rosa Marathon & Half Marathon Santa Rosa CA
Sun Aug 29 Sioux Falls Marathon Half Marathon & 5K Sioux Falls SD
Sun Aug 29 Summer Sizzle Half Marathon 15K 10K & 5K Santa Monica CA
Sun Aug 29 Wee-Chi-Tah Half Marathon & 10K Wichita Falls TX