Search for October half marathons! Search for your next October half marathon at the October Half Marathon Calendar  USA website page. The calendar currently has October half marathons 2026, and will have October half marathons 2027 as they roll in. For races that are late in posting their October half marathon date, we do our best to get those dates updated throughout the year, as race directors and race organizers update their websites. Updates can also be submitted via ou

January Half Marathons https://www.halfmarathonsearch.com/half-marathons-january | January Half Marathon Calendar | Search for January Half Marathons 2026 | January Half Marathon Search | Half Marathon Calendar USA | Half Marathons in January

February Half Marathons https://www.halfmarathonsearch.com/half-marathons-february | February Half Marathon Calendar | Search for February Half Marathons 2026 | February Half Marathon Search | Half Marathon Calendar USA | Half Marathons in February

March Half Marathons https://www.halfmarathonsearch.com/half-marathons-march | March Half Marathon Calendar | Search for March Half Marathons 2026 | March Half Marathon Search | Half Marathon Calendar USA | Half Marathons in March

May Half Marathons https://www.halfmarathonsearch.com/half-marathons-may | May Half Marathon Calendar | Search for May Half Marathons 2026 | May Half Marathon Search | Half Marathon Calendar USA | Half Marathons in May

June Half Marathons https://www.halfmarathonsearch.com/half-marathons-june | June Half Marathon Calendar | Search for June Half Marathons 2026 | June Half Marathon Search | Half Marathon Calendar USA | Half Marathons in June

July Half Marathons https://www.halfmarathonsearch.com/half-marathons-july | July Half Marathon Calendar | Search for July Half Marathons 2026 | July Half Marathon Search | Half Marathon Calendar USA | Half Marathons in July

September Half Marathons https://www.halfmarathonsearch.com/half-marathons-september | September Half Marathon Calendar | Search for September Half Marathons 2026 | September Half Marathon Search | Half Marathon Calendar USA | Half Marathons in September

October Half Marathons https://www.halfmarathonsearch.com/half-marathons-october | October Half Marathon Calendar | Search for October Half Marathons 2025 | October Half Marathon Search | Half Marathon Calendar USA | Half Marathons in October October Half Marathons | October Half Marathon Calendar | October Half Marathons 2025

November Half Marathons https://www.halfmarathonsearch.com/half-marathons-november | November Half Marathon Calendar | Search for November Half Marathons 2025 | November Half Marathon Search | Half Marathon Calendar USA | Half Marathons in November

December Half Marathons https://www.halfmarathonsearch.com/half-marathons-december | December Half Marathon Calendar | Search for December Half Marathons 2025 | December Half Marathon Search | Half Marathon Calendar USA | Half Marathons in December

Alabama Half Marathons https://www.halfmarathonsearch.com/half-marathons-alabama | Alabama Half Marathon Calendar | Search for Alabama...

Alaska Half Marathons https://www.halfmarathonsearch.com/half-marathons-alaska | Alaska Half Marathon Calendar | Search for Alaska Half...

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Arkansas Half Marathons https://www.halfmarathonsearch.com/half-marathons-arkansas | Arkansas Half Marathon Calendar | Search for...

California Half Marathons https://www.halfmarathonsearch.com/half-marathons-california | California Half Marathon Calendar | Search for...

Colorado Half Marathons https://www.halfmarathonsearch.com/half-marathons-colorado | Colorado Half Marathon Calendar | Search for...

Connecticut Half Marathons https://www.halfmarathonsearch.com/half-marathons-connecticut | Connecticut Half Marathon Calendar | Search...

Florida Half Marathons https://www.halfmarathonsearch.com/half-marathons-florida | Florida Half Marathon Calendar | Search for Florida...

Georgia Half Marathons https://www.halfmarathonsearch.com/half-marathons-georgia | Georgia Half Marathon Calendar | Search for Georgia...