September 2023 Half Marathons

See all September 2023 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 2

Sunday, September 3

Monday, September 4 – Friday, September 8

Mon Sep 4 Labor Day Half Marathon Parker CO
Mon Sep 4 New Haven Road Race Half Marathon 20k & 5k New Haven CT

Saturday, September 9

Sunday, September 10

Sun Sep 10 Amish Country Half Marathon Millersburg OH
Sun Sep 10 Black Goose Half Marathon East Providence RI
Sun Sep 10 Bozeman Marathon & Half Marathon Bozeman MT
Sun Sep 10 Chips & Salsa Half Marathon 10k & 5k Albuquerque NM
Sun Sep 10 Clinton Half Marathon 10k & 5k Clinton IA
Sun Sep 10 Diablo Trail Run 50k Marathon Half Marathon 10M & 4M Clayton CA
Sun Sep 10 Holland Haven Marathon Half Marathon & 8k Holland MI
Sun Sep 10 NYC Lives Half Marathon 10k & 5k Brooklyn NY
Sun Sep 10 Parks Half Marathon Rockville MD
Sun Sep 10 Pumpkinman Triathlon and Running Festival South Berwick ME
Sun Sep 10 Racefaster Half Marathon & 5k Paramus NJ
Sun Sep 10 River Run Half Marathon Cleveland OH
Sun Sep 10 T-Bird Trek Half Marathon 10k & 5k Casper WY
Sun Sep 10 Women Run the D Half Marathon 10k & 5k Detroit MI

Saturday, September 16

Sunday, September 17

Sun Sep 17 Adams Half & 5k Brighton CO
Sun Sep 17 AppleTree Marathon & Half Marathon Vancouver WA
Sun Sep 17 DC Half & Relay Washington DC
Sun Sep 17 Elk River Rail Trail Marathon & Half Marathon Clay WV
Sun Sep 17 Fall Equinox Marathon Half Marathon & 5M Fort Collins CO
Sun Sep 17 Fox Cities Marathon Half Marathon & Relay Appleton WI
Sun Sep 17 Fox Valley Marathon 20M Half Marathon & 5k St. Charles IL
Sun Sep 17 Great Lincoln Marathon & Half Marathon Lincoln ME
Sun Sep 17 Half Marathon by the Sea Manchester-by-the-Sea MA
Sun Sep 17 Iowa Trail Runs Yellow River State Park Half Marathon 10k & 5k Yellow River State Park IA
Sun Sep 17 The Dam Half Mifflinburg PA
Sun Sep 17 Valley View Hard Cider Challenge Half Marathon 10k & 5k Delaplane VA

Saturday, September 23

Sat Sep 23 American Birkebeiner Trail Run & Trek Half Marathon Cable WI
Sat Sep 23 Amish Country Running Festival Marathon Half Marathon 10k 5k & 1M Randolph NY
Sat Sep 23 Back Your Badge Marathon Half Marathon & 5k Plainfield IN
Sat Sep 23 Carrollton Half Marathon Carrollton GA
Sat Sep 23 Cedar Creek Marathon Half Marathon & 5k Columbia Falls MT
Sat Sep 23 Corner Canyon Half Marathon Draper UT
Sat Sep 23 Ely Marathon Half Marathon & 5k Ely MN
Sat Sep 23 FitOne Half Marathon 10k & 5k Boise ID
Sat Sep 23 Groom Creek Classic Run Half Marathon 10K & 5K Prescott AZ
Sat Sep 23 Jackson Hole Marathon & Half Marathon Jackson Hole WY
Sat Sep 23 Mill Race Marathon Half Marathon & 5k Columbus IN
Sat Sep 23 Moraine Hills Run for the Hills Half Marathon & 10k McHenry IL
Sat Sep 23 Northwest Series Day 1 Marathon Half Marathon 10k & 5k Pendleton OR
Sat Sep 23 The Orca Half Seattle WA
Sat Sep 23 Prairie Dog Half and 10k & 5k Westminster CO
Sat Sep 23 Red Feather Trail Jamboree 50k & Half Marathon Red Feather Lakes CO
Sat Sep 23 Snow Mountain Ranch Trail Festival Half Marathon Granby CO
Sat Sep 23 Susquehanna River Running Festival Half Marathon 10K & 5K Havre de Grace MD
Sat Sep 23 The Rugged Red Half Marathon Slade KY
Sat Sep 23 Three Sisters Skyline 50k & Half Marathon Sisters OR
Sat Sep 23 Waldoboro Half Marathon Waldoboro ME

Sunday, September 24

Sun Sep 24 Bluegrass Half Marathon Johnson City TN
Sun Sep 24 Clarence DeMar Marathon & Half Marathon Keene NH
Sun Sep 24 Flight Deck Half Marathon Brunswick ME
Sun Sep 24 Fort Smith Marathon Half Marathon & Relay Fort Smith AR
Sun Sep 24 Heartland Marathon Half Marathon & 10k Omaha NE
Sun Sep 24 Northwest Series Day 2 Marathon Half Marathon 10k & 5k Pendleton OR
Sun Sep 24 Quad Cities Marathon Half Marathon 5K & Relay Moline IL
Sun Sep 24 Rochester Half Marathon & 5k Rochester NY

Monday, September 25 – Friday, September 29

Mon Sep 25 N
See all September 2023 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 2
Sat Sep 2 Black Bear Trail Runs Half Marathon 5k & 1M Waterville Valley NH
Sat Sep 2-Mon Sep 4 Labor Day Triple Marathon Half Marathon 10k & 5k Winter Park FL
Sat Sep 2 Marquette Marathon Half Marathon & 5K Marquette MI
Sat Sep 2 Pocatello Marathon Half Marathon 10K & 5K Pocatello ID
Sat Sep 2 Rockin' Brews Marathon Half Marathon & Relay Monona WI
Sat Sep 2 Step Up Storm Lake Half Marathon 5k & Relay Storm Lake IA

Sunday, September 3

Monday, September 4 – Friday, September 8

Mon Sep 4 Labor Day Half Marathon Parker CO
Mon Sep 4 New Haven Road Race Half Marathon 20k & 5k New Haven CT

Saturday, September 9

Sunday, September 10

Sun Sep 10 Amish Country Half Marathon Millersburg OH
Sun Sep 10 Black Goose Half Marathon East Providence RI
Sun Sep 10 Bozeman Marathon & Half Marathon Bozeman MT
Sun Sep 10 Chips & Salsa Half Marathon 10k & 5k Albuquerque NM
Sun Sep 10 Clinton Half Marathon 10k & 5k Clinton IA
Sun Sep 10 Diablo Trail Run 50k Marathon Half Marathon 10M & 4M Clayton CA
Sun Sep 10 Holland Haven Marathon Half Marathon & 8k Holland MI
Sun Sep 10 NYC Lives Half Marathon 10k & 5k Brooklyn NY
Sun Sep 10 Parks Half Marathon Rockville MD
Sun Sep 10 Pumpkinman Triathlon and Running Festival South Berwick ME
Sun Sep 10 Racefaster Half Marathon & 5k Paramus NJ
Sun Sep 10 River Run Half Marathon Cleveland OH
Sun Sep 10 T-Bird Trek Half Marathon 10k & 5k Casper WY
Sun Sep 10 Women Run the D Half Marathon 10k & 5k Detroit MI

Saturday, September 16

Sunday, September 17

Sun Sep 17 Adams Half & 5k Brighton CO
Sun Sep 17 AppleTree Marathon & Half Marathon Vancouver WA
Sun Sep 17 DC Half & Relay Washington DC
Sun Sep 17 Elk River Rail Trail Marathon & Half Marathon Clay WV
Sun Sep 17 Fall Equinox Marathon Half Marathon & 5M Fort Collins CO
Sun Sep 17 Fox Cities Marathon Half Marathon & Relay Appleton WI
Sun Sep 17 Fox Valley Marathon 20M Half Marathon & 5k St. Charles IL
Sun Sep 17 Great Lincoln Marathon & Half Marathon Lincoln ME
Sun Sep 17 Half Marathon by the Sea Manchester-by-the-Sea MA
Sun Sep 17 Iowa Trail Runs Yellow River State Park Half Marathon 10k & 5k Yellow River State Park IA
Sun Sep 17 The Dam Half Mifflinburg PA
Sun Sep 17 Valley View Hard Cider Challenge Half Marathon 10k & 5k Delaplane VA

Saturday, September 23

Sunday, September 24

Monday, September 25 – Friday, September 29

Saturday, September 30

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