Calvins Challenge 2025

The Calvins Challenge Event for 2025 - May 17-18The 12-hour Non-Drafting event is the WUCA 12-hour North American Championship for 2025!– and --The 6-hour Non-Drafting event is the WUCA 6-hour North A...

Calvins Challenge 2025

1675 E Possum Rd, Springfield, OH

2025-05-17 - 2025-05-18

The Calvins Challenge Event for 2025 - May 17-18The 12-hour Non-Drafting event is the WUCA 12-hour North American Championship for 2025!– and --The 6-hour Non-Drafting event is the WUCA 6-hour North A...

Tags: Road Race, Time Trial