Did you remember to say "Rabbit, Rabbit" on the 1st of the month for good luck? If not, maybe watch your back cycling through this week's ride. If you finish the 2.3 miles, you can protect yourself with a badge just in case things go south.
Ride as many times as you like. No need to register, you just need to sign in on the Bike and finish your ride during the week! The ride of the week starts and stops at midnight USA Eastern.
Here is suggested listening for Rabbit Run to help get you going!