Jed Smith 100K M50-59: Mertens Owns the Age Group

• Billy Mertens, 59, wins M50-59 in 8:05:31 — a 7:49/mi average across 62.1 miles of Sacramento fog.
• Wire-to-wire leader among the men — Mertens held 1st in the men's field from the opening checkpoint to the finish line.
• Fastest men's split on the Out & Back→Lap 1 segment — the strongest stretch of an already commanding run.

There was no drama in the M50-59 age group at the 2026 Jed Smith Ultra Classic — because Billy Mertens, 59, from Louisville, CO, made sure of it. The sole finisher in his age group, Mertens crossed in 8:05:31, averaging 7:49 per mile across the full 100K distance in 50°F fog and thick humidity. That's not a jog through the mist — that's a sustained, disciplined effort held together over more than eight hours of racing.

What makes Mertens' day even more striking is what the men's field saw throughout: he led among the men at every single checkpoint, never once relinquishing that position from gun to tape. And he wasn't just holding on — on the Out & Back into Lap 1, he posted the fastest men's split of anyone in the field on that segment, a sign that he was still pushing with real intent well into the race.

At 59, running 62-plus miles at sub-8-minute pace in heavy fog is a result worth noting on its own terms. Mertens took the M50-59 title with no one to chase him down — and, as the splits suggest, he likely would have made that a difficult task regardless.