In January, with temps in the low 30's, we used 1 pint Gatorade, 2/3 cup hot chocolate, 1 rice crispie bar, 1/2 - 1 cup chili and 2 oz chips per runner. I put out aid (Gatorade & water, no cups) at the trail junction (4.74mi) and the turnaround (7.77miles) as well as at the start. The two aid stations consisted of 2 5-gallon jugs on a cheap folding table.
The course was a double out-and-back on the Cedar River and Lake Wilderness trails with the start at Landsberg and the turnaround on the Lake Wilderness trail at a willow bush 0.1mi S of the S 263rd St underpass.
Signup was at the start. Racers were responsible for timing themselves and reporting their times when they finished, although that didn't work very well. Better to photograph the runners at the start and then photograph each runner at the finish. Use stopwatch to calculate additional time for early starters.