road race
β Verified Active Listing
Calvins Challenge 2026
𧬠Course DNA & Technical Intel
π Primary Distance
100 mi
π Recommended Tire
28mm β 32mm All-Road
π΄ Discipline
road race
π Course Distance Options
24-Hour Non-Drafting (RAAM Qualifier)
24-Hour Drafting Allowed
12-Hour Non-Drafting - WUCA 12-hour Championship
12-Hour Drafting Allowed
6-Hour Non-Drafting
6-Hour Drafting Allowed
100-Mile Non-Drafting
100-Mile Drafting Allowed
24-Hour Drafting Allowed Team (2-to-8)
12-Hour Drafting Allowed Team (2-to-8)
6-Hour Drafting Allowed Team (2-to-8)
100-Mile Drafting Allowed Team (2-to-8)
Sponsor or Donation (Get a Custom 2024 Calvins Challenge t-shirt)
7-Mile Time Trial
15-Mile Time Trial
50-Mile Time Trial
About Calvins Challenge 2026
Official registered road race event in Springfield, OH. Direct registration on BikeReg.
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