Marathons in Wisconsin — September 2026
8 upcoming marathons in Wisconsin during September 2026.
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This calendar currently lists 8 upcoming events, from Sep 12, 2026 to Sep 27, 2026. September is the busiest month, with 8 events scheduled. Events are spread across 7 different locations; Duluth hosts the most (2). Course distances range from 32.2 km to 42.2 km.