Marathon and Century Challenge

Choose from two levels of participation:

• Full Marathon/Century Challenge: Row or ski a full marathon (exactly 42,195 meters) or row/ski/ride 100,000m in one workout during the first two weeks of May and enter it in your online logbook.
• Half Marathon/Half Century Challenge: Row or ski a half marathon (exactly 21,097 meters) or row/ski/ride 50,000m in one workout during the first two weeks of May and enter it in your online logbook.