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3 categories; drafting begins at 0705. Non-drafting begins at 0705. 12-hour team drafting. Teams of 2-8 riders. Age group, Gender, bike type awards. https://www.bikereg.com/calvins-challenge-2025
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Timed
Events
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2 events,
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3 categories; drafting begins at 0700 & non-drafting begins at 1200pm. 6-hour team drafting. Teams of 2-8 riders. Age group, Gender, bike type awards. https://www.bikereg.com/calvins-challenge-2025 |
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1 event,
CroUltra is the first 24-hour road cycling marathon in Croatia. It is suitable for anyone who wants to test their endurance and check how many kilometers they can cover in 24 hours. At the same time, the 6th and 12th hour marathons are held.Enter Croultra as a solo, 2 person team or 4 person team! |
2 events,
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Suitable for anyone who wants to test their endurance and check how many kilometers they can cover in 12 hours. At the same time, the 6 and 24 hour marathons are held. |
1 event,
This is an electronic chip-timed event. Racers start in Juniper Campground & make the climb out of Palo Duro Canyon. Riders will then complete a 100 mile route non-drafting.The rest of the 24 Hours will be spent inside Palo Duro Canyon on the road loop where drafting is permitted |
1 event, |