See all October 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.
Sunday, October 1
Monday, October 2 – Friday, October 6
Mon Oct 2 | Center of the Nation Series – Day 1 Marathon & Half Marathon | Sterling CO |
Tue Oct 3 | Center of the Nation Series – Day 2 Marathon & Half Marathon | Chadron NE |
Wed Oct 4 | Center of the Nation Series – Day 3 Marathon & Half Marathon | Sundance WY |
Thu Oct 5 | Center of the Nation Series – Day 4 Marathon & Half Marathon | Belle Fourche SD |
Fri Oct 6 | Antelope Island Marathon Half Marathon 10k & 5k | Syracuse UT |
Fri Oct 6 | Center of the Nation Series – Day 5 Marathon & Half Marathon | Bowman ND |
Fri Oct 6 | Wurst Race Half Marathon & 5k | Muenster TX |
Saturday, October 7
Sunday, October 8
Monday, October 9-Friday, October 13
Fri Oct 13 | Lake Tahoe Marathon & Half Marathon Weekend | South Lake Tahoe CA |
Saturday, October 14
Sunday, October 15
Saturday, October 21
Sunday, October 22
Saturday, October 28
Sunday, October 29
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Sun Oct 29,A Sri Chinmoy Half Marathon,Congers NY
Sun Oct 29,All-Out Kooky Spooky Half Marathon 10k & 5k,Golden CO
Sun Oct 29,Big Easy Halloween Half Marathon & 5k,New Orleans LA
Sun Oct 29,CRC Monster Dash Half Marathon 5k & 1M,Ft. Worth TX
Sun Oct 29,Day of the Day Series Half Marathon,Las Cruces NM
Sun Oct 29,Dothan Running Festival Half Marathon,Dothan AL
Sun Oct 29,Florida Halloween Distance Classic Half Marathon 10k & 5k,St. Petersburg FL
Sun Oct 29,Hairy Gorilla Half Marathon and Squirrelly Six Mile,Voorheesville NY
Sun Oct 29,Halloween Hustle Half Marathon 10k & 5k,Coeur d’Alene ID
Sun Oct 29,Houston Half Marathon & 10k,Houston TX
Sun Oct 29,Marin County Half Marathon 10k & 5k,San Rafael CA
Sun Oct 29,Monster Dash Half Marathon 15k 10k & 5k,Santa Monica CA
Sun Oct 29,Moosehorn Ghost Run Half Marathon,Baileyville ME
Sun Oct 29,Newburyport Half Marathon & Relay,Newburyport MA
Sun Oct 29,Ocean State Rhode Races Marathon Half Marathon & 5k,Narragansett RI
Sun Oct 29,Scary Run Half Marathon 10k & 5k,Washougal WA
Sun Oct 29,Seacoast Half Marathon & 5k,Portsmouth NH
Sun Oct 29,The Haunted Forest Marathon Half Marathon & 5k,Canal Fulton OH
Sun Oct 29,Treasure Coast Halloween Half,Stuart FL
Sun Oct 29,Viking Dash Trail Run Hell Half Marathon 15k & 5k,Gregory MI
Sun Oct 29,Wicked Half Marathon 10k & 5k,Peoria AZ
Sun Oct 29,ZombieRunner Halloween Marathon Half Marathon 10k & 5k,San Jose CA