B.A.A. 10K F75-79: Chatterton Owns the Age Group

• Solo champion: Muffet Chatterton, 79, was the only finisher in the F75-79 age group, crossing in 1:17:38 at a 12:30/mile average.
• Strong second half: Chatterton posted the 3,718th-fastest second-half split among all women, moving up 15 places in the women's field over the final 5K.
• Conditions: She did it in 87°F heat with 66% humidity and an 18 mph wind — a legitimately demanding day in Boston.

Muffet Chatterton of Crofton, MD had the F75-79 age group entirely to herself on a brutally warm Sunday in Boston, and she made the most of it. At 79 years old, she covered the 10K in 1:17:38, averaging 12:30 per mile through heat and humidity that would have tested runners half her age.

What stands out isn't just the finish — it's that Chatterton actually picked up the pace when it mattered. Over the second half of the race, she climbed 15 spots in the women's field, a quiet but real sign that she was managing her effort smartly. In 87°F with an 18 mph wind, the runners who held together in the back half earned something.

There's no one to compare her to in the age group, but the number speaks for itself: a 79-year-old completing a 10K in those conditions is simply worth celebrating on its own terms.