Running races in or near Defiance, OH
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Defiance, OH area. Races listed here include both walking and running events of various distances — from 1-milers, to 5Ks, to marathons, and everything else in between.
10K - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-12-2025
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
View Race Details View on Map
Half Marathon - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-12-2025
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
View Race Details View on Map
50K - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-12-2025
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
View Race Details View on Map
Marathon - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-12-2025
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
View Race Details View on Map
5K - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-12-2025
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
View Race Details View on Map
2025 Heartland Series - Day 1 (OH)
Organization: Mainly Marathons
Date of Race: 07-12-2025
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
View Race Details View on Map
Complete list of running events in and near Defiance, OH: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Defiance
About Defiance
Defiance (OH) is a city in Defiance County with an estimated population of 16,494.[4]
Races Local Newsletter
Subscribe to get the latest on racing delivered to your inbox, once per week.
Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
