The 2003 Pan American Endurance Championship is an elite 100-mile horse ride over challenging and spectacular terrain. To compete at this level, horses and riders must be part of a team, be exceptionally fit, and qualify at the international level.

The 2003 Pan American Championship will be held in Trout Lake, Washington about an hour and a half northeast of Portland, Oregon. The area is the home to one of the most scenic endurance rides in the Pacific Northwest with 100 miles of trail winding through the forested flanks of the majestic snow-capped Mt. Adams, a 12, 276-foot volcano.