Stephen Sambu is running the 2016 Chicago Marathon in October. Here are some highlights of his career.

Name: Stephen Sambu

Country: Kenya

Standout race: Sambu broke the 8K world record in Boston in 2014, clocking 22:02 en route to a 10K victory at the Boston Athletic Association. His 10K best on the road, 27:25, is the 18th fastest time in history.

Get to know Stephen Sambu: Sambu is the back-to-back champion of the 2015 and 2016 Bank of America Shamrock Shuffle in Chicago. He finished the race in 2015 with the fastest time in more than a decade and the 12th fastest in the race’s history. On October 9, he will be attempting his first-ever marathon in Chicago.

“I’m excited to make my first marathon appearance in Chicago because of the strong history of runners making their debut here,” Sambu said. “I’m training very hard and can’t wait to race in front of the fans. I love the flat streets of the city, and I look forward to coming back.”