Jacob Kiplimo, the defending champion, faced a tough challenge in Chicago. Despite his strong start, Kiplimo couldn't maintain his pace in the final stretch. Amos Kipruto took the lead, winning the race in 2:01:09.

Kiplimo and Kipruto were neck-and-neck until the 30K mark. Kiplimo's pace slowed significantly in the last 10K, costing him the win. He finished fourth, more than three minutes behind Kipruto. Read more culture coverage.

This was Kiplimo's first significant setback in his marathon career. He had been working on improving his final 10K, but the strategy didn't pay off this time. Kiplimo's previous marathons had all ended with personal bests. Related: Amos Kipruto Aims for Victory in Chicago Marathon.

This original Runner World brief is based on reporting from Marathon Handbook. Visit the source for its complete reporting, context and any later corrections.