Chelsea Clinton completed her first Chicago Marathon in 3:47:55, showing improved pacing compared to previous races, Marathon Handbook reports. She finished the first half in 1:53:10 and the second half in 1:54:45.

In her first New York City Marathon, Clinton's second half was 18 minutes slower than the first. Her latest race had a much smaller gap, highlighting her progress in maintaining pace. Read more culture coverage.

Clinton's splits in Chicago were more consistent, with each 5K between 26:46 and 27:41, except for a slower stretch from 30K to 40K. Related: Des Linden Returns to Chicago Marathon for 100-Mile Race Preparation.

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