September 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 September 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.

Saturday, September 4


Sat Sep 4	Bohemian Alps Endurance Run Half Marathon	Brainard NE
Sat Sep 4	Cochecho Challenge Half Marathon & 5K	Dover NH
Sat Sep 4	East Canyon Marathon Half Marathon 10K & 5K	Morgan UT
Sat Sep 4	Gorges Ithaca Half Marathon	Ithaca NY
Sat Sep 4	Hamilton NightGlow Marathon Half Marathon & 10K	Hamilton OH
Sat Sep 4	Heartland Half Marathon & 5K	Jasper IN
Sat Sep 4	Marquette Marathon Half Marathon & 5K	Marquette MI
Sat Sep 4	Naperville Trails Half Marathon	Naperville IL
Sat Sep 4	Northwest Series Marathon Half Marathon 10K & 5K – Day 1	Pendleton OR
Sat Sep 4	Parlor City Trot Half Marathon & 10K	Bluffton IN
Sat Sep 4	Pocatello Marathon Half Marathon 10K & 5K	Pocatello ID
Sat Sep 4	Rockin' Brews Marathon & Half Marathon	Madison WI
Sat Sep 4	Six-O Trail Run Marathon Half Marathon & 50K	Cleburne TX
Sat Sep 4	Skyline Half Marathon 10K & 5K	Dallas TX

Sunday, September 5


Sun Sep 5	Boothbay Harbor Fest Half Marathon & 5K	Boothbay Harbor ME
Sun Sep 5	Boston Bound Marathon & Half Marathon	Johns Creek GA
Sun Sep 5	Brew City Half Marathon 10K & 5K	Milwaukee WI
Sun Sep 5	Jack and Jill's Downhill Marathon & Half Marathon	Boise ID
Sun Sep 5	Minocqua No Frills Marathon & Half Marathon	Minocqua MI
Sun Sep 5	Northwest Series Marathon Half Marathon 10K & 5K – Day 2	Pendleton OR
Sun Sep 5	Oak Tree Half Marathon & 5K	Geneseo NY
Sun Sep 5	Oregon Wine Country Half Marathon	Carlton OR
Sun Sep 5	Rock 'n' Roll Virginia Beach Half Marathon & 5K	Virginia Beach VA
Sun Sep 5	Sunset Bay Trail Runs Half Marathon 15K 4-Mile & 1-Mile	Coos Bay OR

Monday, September 6 – Friday, September 10


Mon Sep 6	Labor Day Half Marathon	Parker CO
Mon Sep 6	New Haven Road Race Half Marathon & 5K	New Haven CT
Mon Sep 6	Northwest Series Marathon Half Marathon 10K & 5K – Day 3	Clarkston WA
Tue Sep 7	Northwest Series Marathon Half Marathon 10K & 5K – Day 4	Clarkston WA
Wed Sep 8	Northwest Series Marathon Half Marathon 10K & 5K – Day 5	Lewiston ID
Thu Sep 9	Northwest Series Marathon Half Marathon 10K & 5K – Day 6	Lewiston ID
Fri Sep 10	Mellow Trail Run Marathon Half Marathon 10K & 5K	Spicewood TX
Fri Sep 10	Moonlight Half Marathon	Mapleton UT
Fri Sep 10	Old Forge Half Marathon 10K & 5K	Old Forge NY

Saturday, September 11


Sat Sep 11	Amish Country Half Marathon 10K & 5K	Berlin OH
Sat Sep 11	Apple Dumpling Days Marathon Half Marathon & 5K	Elroy WI
Sat Sep 11	Area 13.1 Half Marathon & Terrestrial 5K	Roswell GA
Sat Sep 11	Bird-in-Hand Half Marathon & 5K	Bird-in-Hand PA
Sat Sep 11	Black Squirrel Half Marathon	Fort Collins CO
Sat Sep 11	Blackwater Canyon Half Marathon	Parson WV
Sat Sep 11	Cedar City Half Marathon	Cedar City UT
Sat Sep 11	Charlotte Covered Bridge Half Marathon 10K & 5K	Shelburne VT
Sat Sep 11	Chi Town Half Marathon & 10K	Chicago IL
Sat Sep 11	Fair on the Square Marathon Half Marathon & 5K	Danville IN
Sat Sep 11	Great Olympic Adventure Trail Run Marathon Half Marathon & 50K	Port Angeles WA
Sat Sep 11	Great Smoky Mountains Half Marathon	Maryville TN
Sat Sep 11	Hidden Gem Half Marathon	Flossmoor IL
Sat Sep 11	Honor the Fallen Half Marathon 10K & 5K	Grand Prairie TX
Sat Sep 11	Ice Age Trail Run Half Marathon 50-Mile & 50K	La Grange WI
Sat Sep 11	International Peace Marathon & Half Marathon	Washington DC
Sat Sep 11	Maple Leaf Half Marathon & 5K	Manchester Center VT
Sat Sep 11	Mellow Trail Run Marathon Half Marathon 10K & 5K	Spicewood TX
Sat Sep 11	Ned*Ned Half Marathon 10K & 5K	Nederland CO
Sat Sep 11	Old Forge Marathon Half Marathon 10K & 5K	Old Forge NY
Sat Sep 11	Pacifica Summit Run Half Marathon	Pacifica CA
Sat Sep 11	Park City Trail Series Half Marathon	Park City UT
Sat Sep 11	Patriots Run Marathon Half Marathon 5K & Ultra	Olathe KS
Sat Sep 11	Revel Big Cottonwood Marathon & Half Marathon	Salt Lake City UT
Sat Sep 11	Run Lake Max Half Marathon 10K & 5K	Culver IN
Sat Sep 11	Running of the Bays Half Marathon	Mound MN
Sat Sep 11	San Juan Island Half Marathon	Friday Harbor WA
Sat Sep 11	Surf City USA Marathon & Half Marathon	Huntington Beach CA

Sunday, September 12


Sun Sep 12	Alternative Half Marathon	Washington Crossing PA
Sun Sep 12	Black Goose Running Festival Half Marathon 10K & 5K	East Providence RI
Sun Sep 12	Boring Marathon Half-Boring Half Marathon & Constantly Boring 8K	Boring OR
Sun Sep 12	Bozeman Marathon & Half Marathon	Bozeman MT
Sun Sep 12	Chips and Salsa Half Marathon 10K & 5K	Albuquerque NM
Sun Sep 12	City to the Sea Half Marathon & Seaside 5K	San Luis Obispo CA
Sun Sep 12	Clinton Half Marathon	Clinton IA
Sun Sep 12	Down2Earth Cross Country Half Marathon 10K & 5K	Hialeah FL
Sun Sep 12	Half Note Half Marathon & 5K	Stevensville MI
Sun Sep 12	Harrisburg Half Marathon	Harrisburg PA
Sun Sep 12	Holland Haven Marathon & Half Marathon	Holland MI
Sun Sep 12	Lake Auburn Half Marathon & 5K	Auburn ME
Sun Sep 12	Lake Placid Marathon & Half Marathon	Lake Placid NY
Sun Sep 12	Luray Half Marathon & 5K	Luray VA
Sun Sep 12	Mad Marathon & Half Marathon	Waitsfield VT
Sun Sep 12	Med City Marathon Half Marathon 20-Mile & Relay	Rochester MN
Sun Sep 12	Racefaster Half Marathon & 5K	Paramus NJ
Sun Sep 12	Skagit Falls Marathon & Half Marathon	Burlington WA
Sun Sep 12	Surftown Half Marathon & 5K	Westerly RI
Sun Sep 12	T-Bird Trek Half Marathon 10K & 5K	Casper WY
Sun Sep 12	Whidbey Island Marathon Half Marathon 10K & 5K	Oak Harbor WA
Sun Sep 12	Winans to Winans Half Marathon	Troy OH
Sun Sep 12	Witch's Hat Run Half Marathon & 5K	South Lyon MI
Sun Sep 12	Women Run the D Half Marathon 10K & 5K	Detroit MI

Monday, September 13 – Friday, September 17


Mon Sep 13	Center of the Nation Marathon Half Marathon 10K & 5K – Day 1	Sterling CO
Tue Sep 14	Center of the Nation Marathon Half Marathon 10K & 5K – Day 2	Chadron NE
Wed Sep 15	Center of the Nation Marathon Half Marathon 10K & 5K – Day 3	Sundance WY
Thu Sep 16	Center of the Nation Marathon Half Marathon 10K & 5K – Day 4	Belle Fourche SD
Fri Sep 17	Center of the Nation Marathon Half Marathon 10K & 5K – Day 5	Bowman ND

Saturday, September 18


Sat Sep 18	Air Force Marathon Half Marathon & 10K	Wright-Patterson AFB OH
Sat Sep 18	All-Out Fall Fest Marathon Half Marathon 10K & 5K	Westminster CO
Sat Sep 18	Autumn Color Run Half Marathon 10K & 5K	Buena Vista CO
Sat Sep 18	Bar Harbor Bank & Trust Half Marathon & Fall 5K	Bar Harbor ME
Sat Sep 18	Best in the West Triathlon Festival Half Marathon & 10K	Sweethome OR
Sat Sep 18	Bismarck Marathon Half Marathon 10K & Relay	Bismarck ND
Sat Sep 18	Buffalo Bill Cody Races Half Marathon & 10K	Cody WY
Sat Sep 18	Cascade Express Half Marathon	Snoqualmie Pass WA
Sat Sep 18	Center of the Nation Marathon Half Marathon 10K & 5K – Day 6	Baker MT
Sat Sep 18	Cherokee Harvest Half Marathon	Cherokee NC
Sat Sep 18	Decorah Loop de Loop Half Marathon 10K & 5K	Decorah IA
Sat Sep 18	Devil After Dark Marathon Half Marathon 10K & 5K	Las Vegas NV
Sat Sep 18	Do the Q Half Marathon Quarter Marathon & 5K	Tulsa OK
Sat Sep 18	The Equinox Half Marathon 10K & 5K	Wentworth NC
Sat Sep 18	Famous Idaho Potato Marathon Half Marathon 10K & 5K	Boise ID
Sat Sep 18	Firebird Trail Races 13-Mile & 50K	Windham ME
Sat Sep 18	Golden Leaf Half Marathon	Aspen CO
Sat Sep 18	Greater Midland Dow RunWalk Half Marathon	Midland MI
Sat Sep 18	Happy Girls Run Spokane Half Marathon 10K & 5K	Spokane WA
Sat Sep 18	Hendersonville Half Marathon	Hendersonville TN
Sat Sep 18	Hoptown Half Marathon & 5K	Hopkinsville KY
Sat Sep 18	Huntsville Marathon Half Marathon 10K & 5K	Huntsville UT
Sat Sep 18	Jamestown Half Marathon	Jamestown RI
Sat Sep 18	Ka'u Coffee Trail Runs Half Marathon 50K 10K & 5K	Pahala HI
Sat Sep 18	Mini Donut Half Marathon	Trempealeau WI
Sat Sep 18	Mount Rushmore Half Marathon	Keystone SD
Sat Sep 18	Mountain Rats Marathon Half Marathon & 55K	Eagle CO
Sat Sep 18	Northeast Kingdom Marathon & Half Marathon	Island Pond VT
Sat Sep 18	Odyssey Trail Running Rampage Half Marathon	Douthat SP VA
Sat Sep 18	Orca Half Marathon	Seattle WA
Sat Sep 18	Pacific Northwest Marathon Half Marathon & 5K	Eugene OR
Sat Sep 18	Pinedale Half Marathon 10K & 1-Mile	Pinedale WY
Sat Sep 18	Pub 2 Pub Half Marathon & 5K	St. James MO
Sat Sep 18	Rock 'n' the Knob Trail Challenge Marathon Half Marathon & 10K	Claysburg PA
Sat Sep 18	Rockin' Rockwoods Half Marathon & 53K	Wildwood MO
Sat Sep 18	Run the Dam Half Marathon 10K & 5K	Grand Coulee WA
Sat Sep 18	Run the River for the Ridge Half Marathon	Riverside CA
Sat Sep 18	San Jose Spartan Trail Half Marathon 50K & 10K	Saratoga CA
Sat Sep 18	Sterling Furnace Half Marathon	Tuxedo NY
Sat Sep 18	Take It to the Lake Half Marathon & 10K	Ely NV
Sat Sep 18	Tour des Fleurs Half Marathon & Quarter Marathon	Dallas TX
Sat Sep 18	Uintah Half Marathon	Vernal UT
Sat Sep 18	Wells Harbor Half Marathon & 5K	Wells ME
Sat Sep 18	Wolf Creek Wrangle Trail Run Half Marathon 10K & 5K	Wolf WY

Sunday, September 19


Sun Sep 19	Annapolis Run for the Lighthouse Half Marathon & 5K	Annapolis MD
Sun Sep 19	AppleTree Marathon & Half Marathon	Vancouver WA
Sun Sep 19	Avenue of the Giants Marathon Half Marathon & 10K	Weott CA
Sun Sep 19	Boston Harvest Half Marathon 10K & 5K	Boston PA
Sun Sep 19	Capital City River Run Half Marathon & 5K	Lansing MI
Sun Sep 19	Caribou Marathon Half Marathon & Relays	Caribou ME
Sun Sep 19	Cheyenne Marathon & Half Marathon	Cheyenne WY
Sun Sep 19	City of Roses Half Marathon & 5K	Cape Girardeau MO
Sun Sep 19	Clo Cow Half Marathon	Petaluma CA
Sun Sep 19	DC Half & Relay	Washington DC
Sun Sep 19	Discover Whitewater Series Half Marathon & 5K	Whitewater WI
Sun Sep 19	Equinox Marathon Half Marathon & 5-Mile	Fort Collins CO
Sun Sep 19	Fox Cities Marathon Half Marathon & Relay	Appleton WI
Sun Sep 19	Fox Valley Marathon Half Marathon 20-Mile & 5K	St. Charles IL
Sun Sep 19	Gnarled Orchard Hard Cider Challenge Half Marathon 10K & 5K	Delaplane VA
Sun Sep 19	Greater Des Moines Women's Half Marathon & 5K	Des Moines IA
Sun Sep 19	Green Cathedral Half Marathon & 5K	Youngstown OH
Sun Sep 19	Half Marathon-by-the-Sea Half Marathon	Manchester-by-the-Sea MA
Sun Sep 19	Harvest Half Marathon 10K & 5K	Van Nuys CA
Sun Sep 19	Hub City Half Marathon	Crown Point IN
Sun Sep 19	Iowa Trail Run Series – Yellow River State Park Half Marathon 10K & 5K	Harpers Ferry IA
Sun Sep 19	Iron Horse Half Marathon	Midway KY
Sun Sep 19	Kismet Cliff Run Half Marathon & 5-Mile	Conway NH
Sun Sep 19	Long Island Marathon & Half Marathon	East Meadow NY
Sun Sep 19	Montana Marathon Half Marathon & 10K	Billings MT
Sun Sep 19	Newport Liberty Half Marathon	Jersey City NJ
Sun Sep 19	Omaha Marathon Half Marathon 10K & 5K	Omaha NE
Sun Sep 19	Orca Half Marathon	Seattle WA
Sun Sep 19	Planet NY Half Marathon	New York NY
Sun Sep 19	Prospect Park Half Marathon	New York NY
Sun Sep 19	Race for a Soldier Half Marathon 10-Mile & 5K	Gig Harbor WA
Sun Sep 19	Scenic Half Marathon & 10K	Sandpoint ID
Sun Sep 19	Snow Mountain Ranch Trail Running Festival	Granby CO
Sun Sep 19	Trapp Cabin Trail Half Marathon 10K & 5K	Stowe VT
Sun Sep 19	Triboro Adventure Tour Half Marathon	New York NY
Sun Sep 19	Wicked Half Marathon	Salem MA

Monday, September 20 – Friday, September 24


Fri Sep 24	Zion at Night Half Marathon	Apple Valley UT

Saturday, September 25


Sat Sep 25	45th Infantry Brigade Combat Team Fallen Heroes Half Marathon	Oklahoma City OK
Sat Sep 25	Akron Marathon Half Marathon & Relay	Akron OH
Sat Sep 25	Amish Country Running Festival	Randolph NY
Sat Sep 25	Armed Services Marathon Half Marathon & 5K	Spring Lake MI
Sat Sep 25	Best Damn Race Orlando Half Marathon 10K & 5K	Orlando FL
Sat Sep 25	Betsy Farris Memorial Run	Columbia MO
Sat Sep 25	Birkie Trail Run Festival	Cable WI
Sat Sep 25	Bridges and Bluffs Half Marathon	Ironwood MI
Sat Sep 25	Carrollton Half Marathon	Carrollton GA
Sat Sep 25	Ely Marathon Half Marathon 5K & Relay	Ely MN
Sat Sep 25	Empowered Half Marathon & 5K	River Falls WI
Sat Sep 25	Fargo Marathon Half Marathon 10K & Relay	Fargo ND
Sat Sep 25	Grand Lake Marathon Half Marathon 5K & Relay	Celina OH
Sat Sep 25	Great South Bay Half Marathon 10K & 5K	Bay Shore NY
Sat Sep 25	Hogsback Half Marathon	Colebrook CT
Sat Sep 25	Hungerford Games Trail Race Half Marathon	Big Rapids MI
Sat Sep 25	Hurricane Honor Trail Race Half Marathon 10K & 5K	Hurricane WV
Sat Sep 25	Indy Women's Half Marathon & 5K	Indianapolis IN
Sat Sep 25	Jackson Hole Marathon Half Marathon & Quarter Marathon	Jackson Hole WY
Sat Sep 25	Jailbreak Marathon Half Marathon & 5K	Wautoma WI
Sat Sep 25	Jordan River Half Marathon	South Jordan UT
Sat Sep 25	Magnolia Meltdown Half Marathon 10K & 5K	Ridgeland MS
Sat Sep 25	Mahoosuc Ridge to the River Challenge Marathon Half Marathon & 10K	Newry ME
Sat Sep 25	Mill Race Marathon Half Marathon & 5K	Columbus IN
Sat Sep 25	Monument Marathon Half Marathon & 5K	Scottsbluff NE
Sat Sep 25	Moraine Hills Run for the Hills Half Marathon	McHenry IL
Sat Sep 25	New Yorker Half Marathon	New York NY
Sat Sep 25	Paris Pair Marathon Half Marathon 10K & 5K	Paris TX
Sat Sep 25	Park2Park Half Marathon & 5K	Holland MI
Sat Sep 25	Pioneer Prairie Dog Half Marathon 10K & 5K	Westminster CO
Sat Sep 25	Priest Lake Marathon Half Marathon Quarter Marathon 50K 25K & 5K	Priest Lake ID
Sat Sep 25	Run for the Trails Half Marathon 10K & 5K	Oconto Falls WI
Sat Sep 25	Run Iron Mountain Road and Trail Half Marathon	Iron Mountain MI
Sat Sep 25	Run the Red Desert Half Marathon 50K & 100K	South Pass City WY
Sat Sep 25	Sandia Crest Marathon & Half Marathon	Albuquerque NM
Sat Sep 25	Stone Bridge Half Marathon & 5K	Roscoe IL
Sat Sep 25	Summerlin Half Marathon	Summerlin NV
Sat Sep 25	Sunburst Races Half Marathon 10K & 5K	South Bend IN
Sat Sep 25	Surly Trail Loppet Half Marathon 7-Mile & 5K	Minneapolis MN
Sat Sep 25	Susquehanna River Running Festival Half Marathon 10K & 5K	Havre de Grace MD
Sat Sep 25	Three Sisters Skyline Half Marathon	Sisters OR
Sat Sep 25	Waldoboro Half Marathon	Waldoboro ME
Sat Sep 25	Wander the Water Half Marathon	Albert Lea MN
Sat Sep 25	White Mountain Milers Half Marathon 10K & 5K	North Conway NH
Sat Sep 25	Willie McCool Memorial Half Marathon 10K & 5K	Lubbock TX
Sat Sep 25	Witch Run Half Marathon 10K & 5K	West Jordan UT
Sat Sep 25	World's End Fall Classic Half Marathon	Forksville PA

Sunday, September 26


Sun Sep 26	Abigail's Race of Endurance Half Marathon 10K & 5K	West Bend WI
Sun Sep 26	Adams Half Marathon & 5K	Brighton CO
Sun Sep 26	Bear Chase Trail Half Marathon & 10K	Lakewood CO
Sun Sep 26	Bellingham Bay Marathon Half Marathon 10K & 5K	Bellingham WA
Sun Sep 26	Bluegrass Half Marathon & Relay	Johnson City TN
Sun Sep 26	Brooksie Way Half Marathon 10K & 5K	Rochester MI
Sun Sep 26	Chicago Half Marathon & 5K	Chicago IL
Sun Sep 26	Clarence DeMar Marathon & Half Marathon	Keene NH
Sun Sep 26	Eau Claire Marathon Half Marathon 5K & Relay	Eau Claire WI
Sun Sep 26	Heartland Marathon Half Marathon 10K & Relay	Omaha NE
Sun Sep 26	Linganore Winecellars Cross Country Classic Half Marathon 10K & 5K	Mount Airy MD
Sun Sep 26	Mt. Si Hill Climb	North Bend WA
Sun Sep 26	The Parks Half Marathon	Rockville MD
Sun Sep 26	Quad Cities Marathon Half Marathon 5K & Relay	Moline IL
Sun Sep 26	Texas Tough Helotes Half Marathon 5K & Relay	Helotes TX