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


Sun Aug 1	Badger Trail Race Marathon Half Marathon 50-Mile & 50K	Belleville WI
Sun Aug 1	BearFest Marathon Half Marathon & 5K	Wrangell AK
Sun Aug 1	Hoot Half Marathon & 10K	Lewis Center OH
Sun Aug 1	NYC Summer Half Marathon – Central Park	New York NY
Sun Aug 1	Paradise Valley Trail Run Half Marathon 10K & 5K	Woodinville WA
Sun Aug 1	Run Michigan Cheap Half Marathon 10K & 5K – Dearborn Heights	Westland MI
Sun Aug 1	SAR Wild Run Half Marathon 10K & 5K	Shaver Lake CA
Sun Aug 1	Skyline Endurance Run 50K & Half Marathon	Castro Valley CA
Sun Aug 1	Summer Georgetown Half Marathon 10K & 5K	Washington DC
Sun Aug 1	Triple Threat Half Marathon 5K & 1-Mile	Rockport MA
Sun Aug 1	Wy'east Howl Half Marathon	Mount Hood OR

Monday, August 2 – Friday, August 6


Tue Aug 3	Alaska Series Marathon Half Marathon 10K & 5K – Day 1	Juneau AK
Wed Aug 4	Alaska Series Marathon Half Marathon 10K & 5K – Day 2	Juneau AK
Thu Aug 5	Alaska Series Marathon Half Marathon 10K & 5K – Day 3	Juneau AK
Fri Aug 6	Alaska Series Marathon Half Marathon 10K & 5K – Day 4	Juneau AK

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


Sun Aug 8	Camarillo Marathon Half Marathon 10K & 5K	Camarillo CA
Sun Aug 8	Emerald Mountain Epic Marathon & Half Marathon	Steamboat Springs CO
Sun Aug 8	Funky Monkey Half Marathon & 5K	North Kingstown RI
Sun Aug 8	Georgetown Half Marathon & 5K	Washington DC
Sun Aug 8	Hofbrauhaus Cleveland Half Marathon 10K & 5K	Cleveland OH
Sun Aug 8	Little Miami Half Marathon & 10K	Morrow OH
Sun Aug 8	Run for the Elk Half Marathon	Benezette PA
Sun Aug 8	Run Michigan Cheap Half Marathon 10K & 5K – Traverse City	Traverse City MI
Sun Aug 8	Treasured Haven Farm Veggie Run Half Marathon	Rush City MN

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	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	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	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	Twisted Crawdad Trail Series	Chadron NE
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


Sun Aug 15	America's Finest City Half Marathon & 5K	San Diego CA
Sun Aug 15	Bridge of the Gods Half Marathon 10K & 5K	Cascade Locks OR
Sun Aug 15	Dexter-Ann Arbor Half Marathon 10K & 5K	Ann Arbor MI
Sun Aug 15	Geneva Half Marathon	Geneva NY
Sun Aug 15	Glacier Peak Institute Half Marathon & 12K	Darrington WA
Sun Aug 15	Lovelace Rio Grande Half Marathon & 5K	Albuquerque NM
Sun Aug 15	Run Michigan Cheap Half Marathon 10K & 5K – Lake Orion	Lake Orion MI

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	Wasatch Half Marathon & 10K	Midway UT
Sat Aug 21	Wausau Marathon Half Marathon & Relay	Wausau WI

Sunday, August 22


Sun Aug 22	Anchorage RunFest Skinny Raven Half Marathon	Anchorage AK
Sun Aug 22	E.T. Full Moon Midnight Marathon Half Marathon 51K 10K & 5K	Rachel NV
Sun Aug 22	Emerald City Half Marathon Quarter Marathon & 5K	Dublin OH
Sun Aug 22	Erie Half Marathon & 5K	Erie CO
Sun Aug 22	Fall Creek Falls Half Marathon 10K & 5K	Pikeville TN
Sun Aug 22	Iron Horse Half Marathon	North Bend WA
Sun Aug 22	Kickin' Assphault Half Marathon & 10K	Great Falls MT
Sun Aug 22	Leading Ladies Marathon & Half Marathon	Spearfish SD
Sun Aug 22	Rock 'n' Roll Seattle Half Marathon	Seattle WA
Sun Aug 22	Viking Dash Trail Run Half Marathon 10K & 5K – Hell	Gregory MI

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	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	Wee-Chi-Tah Half Marathon & 10K	Wichita Falls TX