Mother Nature provided the trees and boulders, but the Weatherman threw in a few lumps for good measure at the 1973 Brush Run 101 World Championship race. Two days of heavy rain preceded the weekend of off-road racing, turning an already challenging course into a morass of mud and waterholes.

Undaunted, 221 drivers registered for the races and those who finished successfully shared a purse of $6,111.00. Racers came from all different points in Wisconsin as well as surrounding states to test their vehicles and driving skill against the tortures of the Brush Run course. An estimated 5,000 fans were on hand at the various spectator points to cheer on their favorites!

The best time for cars in the race was recorded by the winner of Class VII, rear engine Buggies, Bob Warren of Morton Grove, Illinois,  piloting a Chenowth ran the course in 2 hours, 20 minutes and 58 seconds. There were 37 entries in Class VII, with a purse of $1,195.00

Leading time in the motorcycle classes were John Graves of Buchanan, Michigan, driving a Yamaha in Class 3 (251 cc & up). His time was 2 hours, 42 minutes and 27 seconds.