Nearly 150 athletes will be taking on the new Double Door challenge at this weekend’s Door County Triathlon.  They’ll compete Saturday in the sprint course, consisting of a quarter-mile swim, an 18-mile bike ride, and a 5K (3.1 miles) run. Then on Sunday they’ll return to Frank Murphy County Park for the Olympic distance, including a 0.9-mile swim, a 24.8-mile bike ride, and a 10K (6.2 miles) run. It’s the latest evolution of the Triathlon made possible with the switch from a half-iron distance this year to the Olympic distance for Sunday’s event.  Jenny & Sean Ryan will have course condition updates beginning each morning in the 5am hour on 106.9 and 93.3, on our app, and at fm1069thelodge.com