F35-39 at Chicago 13.1: Alvarez dominates with a 5:49 pace on a perfect morning

• Brittany Alvarez won the F35-39 age group in 1:16:20 (5:49/mi), finishing 10th among all women — nearly nine minutes clear of the field.
• The gap from 1st to 2nd was 8 minutes 41 seconds; from 2nd to 3rd just 1:14 — a tight battle for the rest of the podium.
• Tina Muir (Saint Louis) made the race's most dramatic move in the age group, climbing from 63rd to 45th among women across the final stretch to claim 5th.
• Three runners — Gabby Tate, Melissa Zerfass, and Araceli Mondragon — finished 15th, 16th, and 17th with times of 1:38:42, 1:38:43, and 1:38:46, separated by just four seconds across three places.

Brittany Alvarez turned in one of the standout performances of the entire women's field on a crisp 60°F Chicago morning. Running 5:49 per mile across 13.1 miles, she won the F35-39 age group by nearly nine minutes — a margin that tells its own story. She moved steadily through the women's field, climbing from 12th to 10th among all women by the finish, and posted the 8th-fastest women's split on the 10K-to-15K segment, a stretch where she was clearly pressing the pace.

Behind her, Drusia Dickson and Janessa Juarez ran a genuine race for the podium. Dickson crossed in 1:25:01 to claim 2nd, while Juarez finished 3rd in 1:26:15, having moved from 29th to 23rd among women over the course of the race — a steady, well-paced effort. Juarez also posted the 21st-fastest women's split on the 10K-to-15K segment, matching Alvarez's strongest stretch of the course.

The most compelling subplot belonged to Tina Muir of Saint Louis. Starting conservatively — she was 63rd among women at the 5K mark — Muir worked her way through the field segment by segment, reaching the finish 45th among women and 5th in the age group at 1:31:16. Her closing split from 15K to the finish ranked 37th among all women, a strong finish that rewarded her patience.

Back in the thick of the age group, the 15th-through-17th place battle was almost comically tight: Tate, Zerfass, and Mondragon covered four seconds across three finishers, all clocking 7:32 per mile. In a field of 636, that kind of clustering is a reminder of just how competitive the middle of this age group was on Sunday.