It's going to be dark on Tuesday. Reflective gear and a headlamp are required for participation.RX2 X 1600 M 70%1:30 rest BT each10 X 200 M 85%-90%:30 rest BT eachIf you cant maintain effortextend rest time :45.Performance2 X 1600 M 70%1:30 rest BT each8 X 200 M 85%-90%:30 rest BT eachIf you cant maintain effortextend rest time :45.Fitness2 X 1000 M 70%1:30 rest BT each8 X 200 M 85%-90%:45 rest BT eachIf you cant maintain effortextend rest time 1:00