There is no charge to participate in the practice runs. Race178 will provide refreshments at the end of each practice run.
Everyone is invited, whether you are running that particular leg or not and whether you are running in one of these relays or not.
If you are running in the RTO or Capital or Comstock Odysseys, then come out to every one of these practice runs to train for the event. You will have so much more fun during the relay if you are physically and mentally ready to go.