San Francisco Ultramarathon Men: Herrera Breaks the Course Record with a 5:54:52

• Isidore Herrera, 36, wins in 5:54:52 (6:46/mi) — the fastest men's finishing time in the editions we have, besting Tyler Rocha's 2025 mark of 6:09:05 by over 14 minutes.
• Spencer Fluetsch (6:03:34) and Mayank Goel (6:04:47) complete the podium, separated by just 1:13 — with Goel also having raced the Saturday 5K earlier in the weekend, finishing 5th there before doubling back for 52.4 miles.
• Connor Guerrero's charge: the San Francisco local moved from 9th at the first marathon checkpoint to 4th at the finish, the biggest positional gain among the top finishers.
• Robert Kauss, 53, finished 9th in 7:21:53 — one second behind Tadeo Messenger's 7:21:52 in 8th — the tightest gap anywhere in the top 10.

Fifty-two miles through San Francisco's fog-kissed streets, across the Golden Gate Bridge, and twice through Golden Gate Park — and Isidore Herrera of Ventura, CA made it look controlled. His 5:54:52 at 6:46/mi doesn't just lead this field; it undercuts every men's winning time in the editions we have on record, including Tyler Rocha's 6:09:05 from 2025. Herrera led from start to finish, never relinquishing the top spot, and posted the second-fastest split of the opening marathon leg among the men — a sign that his early pace was a statement, not a gamble.

Behind him, the battle for the podium was genuinely close in time but told two different stories. Spencer Fluetsch (6:03:34, 6:56/mi) held second throughout, while Mayank Goel (6:04:47, 6:58/mi) ran the fastest first-marathon split of any man in the field yet couldn't quite reel Fluetsch in — a classic case of a blazing early leg that fell just short over 52 miles. Goel's weekend deserves its own beat: he toed the line at the Saturday 5K, placed 5th there, and then came back to claim an ultramarathon podium. That kind of range across a single race weekend is rare.

The most dramatic move in the men's field belonged to Connor Guerrero, the hometown San Franciscan who sat 9th at the halfway mark and finished 4th in 6:41:24 (7:40/mi). Five places gained over a second marathon — that's not a drift, that's a deliberate second-half surge while others faded. Jaden Trujillo (5th, 6:44:55) and John Nickerson (6th, 6:47:49, the top finisher over 40) rounded out the front group, all within striking distance of each other in a span of under seven minutes.

Further down, the depth of this 107-man field showed in some quietly impressive efforts. Rudi Hillbo made the trip from Oslo to post a 7:26:34 in 10th. Robert Kauss, 53, covered the double marathon in 7:21:53 — one second behind Tadeo Messenger in 8th, the narrowest gap in the entire top 10. Stijn Koster (20th, 8:15:27) brought international flavor from the Netherlands. On a cool, breezy San Francisco morning, 107 men finished one of the few urban ultras in the country — and Herrera's name now sits at the top of the timing sheet.