| Copps Food Centers - Great things in store for you... a Mad City 100K Major Sponsor. |
| Mike Kasun Illustration - Stock Illustration, Advertising, Editorial, Children's Book Illustrations and Logos. |
| Professional coaching for runners - Howard Nippert. |
| Berkeley Running Company - Madison's Premier Running and Walking Specialty Store. |
| Becker Law Office: Social Security Disability Law... Statewide in Wisconsin |
| ZombieRunner: Stuff for people who run. |
| Todd and Jerilyn Bramson - "Good luck to all runners!" |
| Jim and Karen Berbee - "With best wishes to all of the runners!" |
| Jane and Doug Crogan - "We wish every solo racer and relay racer a wonderful run!" |
| BodyMechanic Fitness. |
| Zoned 4 Fitness. |
| The Wisconsin Cheeseman - quality gifts that are a pleasure to give and a delight to receive. |
| Wisconsin Track Club - in Madison. |
| Nicolet - Natural Artesian Water. |
| RoadID - Be seen wearing it. |
| Hammer Nutrition - Fuel right, Feel Great! |
| Sustainable Engineering Group LLC - reducing your utility costs while increasing comfort and productivity. |
| ENGO Blister prevention patches - Any Sport. Anywhere. GoENGO. |
| Fleet Feet Sports - Madison. |
| Sentry Metcalfe's - Uniquely Different. |
| RunRace Network: Virtual community for runners and race directors. |
| Sports Management Associates, Inc. |