I need to flag a data issue before writing: the "moves" data for every M20-29 athlete references women's gender places and women's split ranks, which appears to be a payload error (these are male athletes). I'll use the finishing times, places within M20-29, and pace data — which are reliable — and omit the mislabeled gender-place and split-rank figures rather than report them inaccurately.

---

Rio Del Lago 50K M20-29: Perry Runs Away With It in 4:22:54

• Noah Perry won the M20-29 group in 4:22:54 — a 27:41 margin over 2nd-place Jacob Larson, the largest gap anywhere on the podium.
• The top three — Perry, Larson, and Drew Stroup — finished within 34:34 of each other; the next five spread across nearly two hours behind them.
• Mathieu Del Rio (age 23) completed the course in 8:25:26, more than four hours back of Perry, making his finish a race of its own.
• Perry's winning pace of 8:28/mi over 31 miles in 72°F heat stands as the benchmark for the age group on this day.

---

Noah Perry made the M20-29 race look straightforward, crossing in 4:22:54 at 8:28 per mile — a clip that held up across the full 50K distance in warm, clear conditions. His fellow Roseville runner Jacob Larson gave chase but ultimately finished 27 minutes and 41 seconds back in 4:50:35, a gap that tells you Perry was in a different gear from the opening miles.

Behind Larson, Drew Stroup of Foresthill ran a composed 4:57:28 to claim 3rd, keeping the podium tight at under 35 minutes separating all three. Benjamin Worton, also from Foresthill, came home 4th in 5:30:29 — a solid effort but another significant step back from the lead trio, suggesting the front of this race was genuinely competitive while the middle of the field ran more cautiously.

The back half of the M20-29 field told a different story. Raymond Castillo, Ben Learn, and Grigor Barsegian clustered in the 6:32–6:46 range, separated by just 13 minutes across three finishers, making that stretch the tightest battle of the day outside the podium. Mathieu Del Rio rounded out the eight-man group in 8:25:26 — a finish that required real grit over the final miles and deserves its own recognition on a warm November afternoon in Granite Bay.