Calvins Challenge 2026
Dates: Sat May 16 - Sun May 17, 2026
Location: Springfield, OH
Organizer: UltraCycling Events
Description: Road Race Event
Discounted Fee Deadline: Monday, Mar 30, 2026 at 11:59 PM ET
- 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 - WUCA 6-hour Championship
- 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)
Online Registration Deadline: Thursday, May 14, 2026 at 11:59 PM ET
