NB35-39: Mercado leads wire-to-wire in San Francisco's cool July wind

• Miguel Mercado won the NB35-39 race in 2:08:31 (9:48/mi), holding 5th among women from the midpoint to the finish line.
• Morgan Bartholomew ran the 8M→9.6M segment as the 9th-fastest women's split on that stretch, helping her close to 2nd in NB35-39 in 2:30:26.
• Derrick Guerrero (3rd, 2:41:06) and Sthabile Kolwa (4th, 2:47:25) were separated by just over six minutes, with Guerrero fading through the women's field after a strong early position.

Miguel Mercado was the steadiest force in the NB35-39 race on a breezy, 59°F morning in San Francisco. He locked into 5th among women by the 6M mark and never budged, crossing in 2:08:31 at a 9:48/mi clip. His 4th-fastest women's split on the 4M→6M segment was the sharpest individual moment of his race — a stretch where he was clearly moving through the field with purpose.

Morgan Bartholomew made her own statement on the back half. After trading places in the women's standings through the first eight miles, she uncorked the 9th-fastest women's split on the 8M→9.6M segment, a sign that she was running her best running when it mattered most. She finished 2nd in NB35-39 in 2:30:26 — nearly 22 minutes behind Mercado, but a clear and comfortable margin ahead of the rest of the field.

Behind her, Derrick Guerrero told a different story. He held 13th among women at the 2M mark before drifting steadily backward, finishing 20th in the women's standings and 3rd in NB35-39 in 2:41:06 (12:17/mi). Sthabile Kolwa, running out of Palo Alto, showed a flash of speed early — posting the 18th-fastest women's split on the 2M→4M segment — before settling into 4th place in 2:47:25 (12:46/mi). The six-minute gap between Guerrero and Kolwa reflected a race where positions hardened well before the finish and stayed there.