Final entry confirmations and elite bib pickups have closed in Grand Rapids ahead of Saturday's 49th edition of the Fifth Third River Bank Run, which doubles for the 32nd consecutive year as the USATF 25K Open Championships. With the gun set for 08:00 local time on May 9 and the women's elite field released to a 20-minute head start, organisers said on Wednesday that approximately 16,400 runners across the 25K, 10K, 5K and Community Walk have entered, the largest combined field since 2017. The Amway-sponsored event is the longest continuously running 25K championships in the United States.

The men's American record of 1:13:47, set by Sam Chelanga in 2019, sits in clear sight on the front entry list. Hillary Bor, the Olympic steeplechase finalist who has moved decisively to the roads in the past 18 months, headlines a deep American contingent that includes Reed Fischer, CJ Albertson and 2025 champion Athanas Kioko. International contenders include Kenya's Edwin Kurgat, the 10,000m American collegiate record holder turned road specialist, and Ethiopia's Hailemaryam Kiros, who clocked 1:13:55 in his only previous 25K start last September in Tilburg. The course has produced six sub-1:14 finishes in its history; mild forecast conditions and the resurfaced Fulton Street climb at 16km are expected to offer no excuses.

The women's race carries a similar charge. Defending champion Emma Bates returns to chase the elusive American record of 1:24:36, set by Magdalena Lewy Boulet in 2012, having opened the year with a controlled half marathon at the New Bedford Half in March. Fellow contenders include Susanna Sullivan, last year's runner-up, and Annie Frisbie, who set a 25K personal best in Indianapolis last spring. Olympian Aliphine Tuliamuk withdrew on Tuesday with what her management described as a hamstring strain. Among internationals, Buze Diriba of Ethiopia and Sintayehu Lewetegn lead the road-to-Tilburg circuit standings and will both feature in Grand Rapids.

Conditions are setting up cooperatively. The National Weather Service forecast for Saturday morning calls for an early temperature of 6 degrees Celsius rising to 12 by the women's finish, light westerly breeze, and dry pavement after a Friday cold front passes through. The course profile is mostly flat along the Grand River with a single category-three ascent up Monroe Avenue between 19km and 21km; that climb is the historical pinch point and the section where 12 of the past 16 men's championships have been decided. Race director Lee Brown told reporters on Wednesday that course markings have been refreshed in line with USATF's updated 25K standards and that there will be a chase pacer in both fields contracted to a 1:13:50 men's split and 1:24:30 women's split through 22km.

For USATF, the meeting also delivers Running Circuit points and is the de facto American 25K trial ahead of the World Athletics Road Running Championships in Copenhagen this September. The full elite list and prize-money breakdown were published on the Amway River Bank Run website on Tuesday; with both course records and an American record in scope, Grand Rapids is set to deliver the most competitive 25K championship in a decade.