Mad City 100k Race

USA Track and Field has approved the bid of the Mad City 100K to be the 2007 US National Championship 100 kilometer road race.

Marathons, Ultramarathons and Multiday Events
Marathon Ultramarathon by distance: 50 km \| 50 m \| 100 km \| 100 miles \| Other distances 26 miles - 100 miles Ultramarathon by time: 6 hour races \| 12 hour races \| 24 hour races \| 48 hour races \| 72 hour races \| marathon \| ultramarathon \| Multiday Races Multiday race by time: 5 Day Races \| 6 Day Races \| 7 Day Races \| 10 Day Races ".." Multiday race by distance: 1000 km \| 700 miles \| 1000 miles \| 1300 miles \| 3100 miles; ".." Types of Races: Stage Races \| Adventure/Raid Races \| Trail Races \| Relay Races; ".."

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