Running races in or near Ontario, WI
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Ontario, WI 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.
Marathon - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-16-2026
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
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Half Marathon - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-16-2026
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
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50K - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-16-2026
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
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2026 Heartland Series - Day 6 (WI)
Organization: Mainly Marathons
Date of Race: 07-16-2026
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
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10K - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-16-2026
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
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5K - Individual Age group/open
Organization: Mainly Marathons
Date of Race: 07-16-2026
Description: World's Best Marathon Half Series! No Time Limits Great Food ...
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Complete list of running events in and near Ontario, WI: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Ontario
About Ontario
Ontario (WI) is a village in Vernon County with an estimated population of 554.[4]
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Did you know?
Historically, more marathons are run in the month of October than any other month (in the U.S.).
