B.A.A. 10K Women's 20–24: Toledo-Altamirano dominates on a scorching day

• Bastion Toledo-Altamirano won the 20–24 age group in 52:32 (8:27/mi), finishing 8th among women overall.
• Her 4th-fastest women's split on the 5K–8K segment was the standout performance of the age group.
• Annie Christie took 2nd in 59:47, more than seven minutes back — the gap between 1st and 2nd was the largest of any consecutive places in the group.
• Emma Reed rounded out the four-finisher field in 1:16:45, running a 12:21/mi pace through 93°F heat.

With just four finishers in the 20–24 age group, the race was defined less by a tight battle than by one dominant effort at the front. Bastion Toledo-Altamirano, 23, from Hopkinton, crossed in 52:32 — a full 7:15 ahead of the next finisher — and held 8th place among women from the first checkpoint to the finish without wavering. On a day when Boston baked at 93°F with a 15 mph wind, that kind of consistency is its own story.

The most telling detail of Toledo-Altamirano's race came between 5K and 8K, where she posted the 4th-fastest women's split in the field on that stretch. She wasn't just managing the heat — she was pushing through it at a moment in the race when many runners begin to fade.

Annie Christie, 24, of Boston, settled into 2nd in the age group with a 59:47 finish, holding 14th among women by the close. Henry Barthelemy, 22, also of Boston, came in 3rd in 1:06:30, steady at 19th among women throughout. Emma Reed, 23, from Medford, completed the group in 1:16:45 — a gutsy finish in brutal conditions, running the final stretch with the 20th-fastest women's split on the 8K-to-finish segment.