McNaughton Park Trail Runs

The McNaughton Park Trail Runs, over distances of 50, 100, 150 and 200 mi, is an annual ultramarathon running event held in Pekin, Illinois each spring on a rugged, ten-mile (16 km) loop course. All four races are run concurrently. The 150 and 200 mi ultra are the only ones of that distance held in Illinois.

The loop course is primarily a single lane footpath, through natural countryside including forests and meadows. Each ten-mile (16 km) loop provides approximately 1600 ft of elevation gain.

A thirty-mile run, part of the event through 2006, was replaced by a 150 mi option beginning in 2007.

Records
Men
 * 30 Mile (no longer held): Paul Stofko 3:58:18 2005
 * 50 Mile: Eric Grossman 6:52:34 2004
 * 100 Mile: Karl Meltzer 17:40:13 2007
 * 150 Mile: David Goggins 33:36:20 2008

Women
 * 30 Mile (no longer held): Ellen Erhardt 4:35:34 2004
 * 50 Mile: Jane Moser Cox 9:28:01 2005
 * 100 Mile: Tracy Thomas 23:27:26 2006
 * 150 Mile: Charlotte Vasarhelyi 46:21:29 2008