San Francisco Marathon 19 & Under: Daniel Chappell Owns the Division

• Sole finisher and winner: Daniel Chappell, 17, Los Altos, CA — 3:43:06 (8:31/mi avg)
• Early consistency: Held 1st among men through six consecutive checkpoints before settling into 2nd among men for the final stretch
• Standout split: Posted the fastest women's split on the 2.2 Miles→5.7 Miles segment

Daniel Chappell had the 19 & Under field entirely to himself on a mild San Francisco morning — 69°F, light winds, and broken clouds making for as reasonable a day as the city's notorious hills allow. The 17-year-old from Los Altos crossed the line in 3:43:06, averaging 8:31 per mile across the full 26.2.

What makes Chappell's run worth a closer look is the segment data. On the 2.2 Miles→5.7 Miles stretch, he posted the fastest split among all women in the race — a genuine speed marker that puts his early-race effort in real context, not just relative to a one-person field.

His gender-place progression tells a straightforward story: 1st among men from the gun through six checkpoints, then slipping to 2nd among men for the final two. Whether that reflected a late fade or simply the field catching up, he held his line well enough to finish 3:43:06 on a course that has humbled plenty of runners twice his age. With a course record of 2:19:27 set in 2019 as the benchmark, Chappell has a clear target to chase as he grows into the distance.