The course is almost entirely on the Arkansas River Trail and is a 19-mile loop to the east and then a 7-mile loop to the west. The course crosses the Big Dam Bridge at Miles 1 and 18, the Clinton Presidential Bridge at Mile 9, and the Two Rivers Bridge at Miles 19 and 26. The course crosses the Start/Finish line going west at 19 miles. The course is mostly flat, except for the three bridges. The course is mostly paved trail. The course is USATF certified as AR25005WJT and is a Boston qualifier.

3 Bridges Marathon 2025 Course Map