Women's Half Marathon: Vasconcellos Surges Late to Claim San Francisco

• Maria Eduarda De Arruda Falcao Vasconcellos won in 1:31:33 (6:59/mi), posting the fastest women's split from mile 12 to the finish to move from 7th to 1st in the final stretch.
• Grace Tompkins Pettigrew, just 16 years old, rocketed from 12th to 4th with the 2nd-fastest women's closing split, finishing in 1:37:57.
• Adele Smolansky and Jing Miao both ran the 2nd- and 3rd-fastest second-half splits among women, respectively — Smolansky climbing from 15th to 5th (1:38:43), Miao from 8th to 2nd (1:35:11).
• Six of the top 10 women finished within a 67-second window (1:38:43 to 1:39:33), making for a densely packed chase pack behind the top two.

The story of this women's race is one of patience rewarded and closing speed unleashed. Maria Eduarda De Arruda Falcao Vasconcellos, 43, of Palo Alto, ran a composed race — sitting in 6th for most of the first half, drifting briefly to 7th near mile 12 — before uncorking the fastest closing split among the 2,930 women finishers to seize the win. Her 6:59/mi average tells only part of the story; it was the final miles where she truly separated herself, arriving at the tape in 1:31:33 and making one of the sharpest late moves of the day.

Jing Miao was the other major second-half story. The 33-year-old from Campbell entered the back half in 6th and steadily worked her way forward, posting the 3rd-fastest second-half split among women to close in 1:35:11 — a full 3:38 ahead of 3rd place. Marcella Falcao, 30, held her position with remarkable consistency, sitting 7th from the opening miles all the way through mile 10 before finishing 3rd in 1:36:06, helped by the 3rd-fastest split on the 9.6M–10.5M segment.

The youth movement in the chase pack deserves its own spotlight. Grace Tompkins Pettigrew, a 16-year-old from San Francisco, ran one of the boldest positive progressions in the field — 55th early, 4th at the line in 1:37:57 — with the 2nd-fastest closing split among women. Fellow teen Kacey Kensic, also 16, from Sebastopol, finished 11th in 1:40:06. Meanwhile, Susan Empey, 58, of Mercer Island, slipped into 19th at 1:41:53, a reminder that the depth in this women's field ran well beyond the podium.