Running races in or near Seneca, IL
Marathons, 1-milers, 5Ks, half-marathons, 10Ks & more
See below for a frequently-updated, comprehensive list of upcoming running events in the local Seneca, IL 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.
Muddy Dash - Standard Registration
Organization: Viral Run
Date of Race: 06-28-2025
Description: Event details and schedule
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Marathon - NO SHIRT Included - Individual ...
Organization: Run Starved Rock Country
Date of Race: 05-10-2025
Description: Now in its 12th year, (11th running, have to count Covid) ...
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Run SRC 5K - Individual Registration
Organization: Run Starved Rock Country
Date of Race: 05-10-2025
Description: Now in its 12th year, (11th running, have to count Covid) ...
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Half Marathon - NO SHIRT Included - Individual ...
Organization: Run Starved Rock Country
Date of Race: 05-10-2025
Description: Now in its 12th year, (11th running, have to count Covid) ...
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Marathon - Individual Registration
Organization: Run Starved Rock Country
Date of Race: 05-10-2025
Description: Now in its 12th year, (11th running, have to count Covid) ...
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Muddy Dash | Chicago | June 28, 2025
Organization: Viral Run
Date of Race: 06-28-2025
Description: Event details and schedule
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Muddy Dash - Value Registration
Organization: Viral Run
Date of Race: 06-28-2025
Description: Event details and schedule
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Muddy Dash - VIP Registration 💎
Organization: Viral Run
Date of Race: 06-28-2025
Description: Event details and schedule
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Half Marathon - Individual Registration
Organization: Run Starved Rock Country
Date of Race: 05-10-2025
Description: Now in its 12th year, (11th running, have to count Covid) ...
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2025 Starved Rock Country Marathon and Half Marathon
Organization: Run Starved Rock Country
Date of Race: 05-10-2025
Description: Now in its 12th year, (11th running, have to count Covid) ...
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Complete list of running events in and near Seneca, IL: Marathons, 1-milers, 5Ks, half-marathons, 10Ks, obstacle courses, walking events & more.
More information about Seneca
About Seneca
Seneca (IL) is a village in LaSalle County with an estimated population of 2,371.[4]
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Did you know?
There were at least 768 marathons scheduled in the United States and Canada in 2016.
