Get $20 Off Registration For Rock 'N' Roll Marathon On National Running Day

DENVER (CBS4)- Runners who register for the Sports Authority Rock 'n' Roll Marathon on National Running Day will save $20 on registration.

National Running Day is the first Wednesday in June and was created to share the passion shared between more than 49 million people in the U.S. who run.

Register here: rocknroll.competitor.com

Sports Authority Rock 'n' Roll Denver Marathon & ½ Marathon returns Sunday, Oct 20.