Progress against the field
From Toronto 2025 to Ottawa 2026, William Tsilkas has moved with the field: what changed on the clock changed for everyone.
The clock says 5:22 faster, but the races themselves got 5:22 quicker for everyone.
How this is worked out ⓘ
A finish time moves for two reasons: the athlete, and the race — its course, its floor, its day. For each pair of races in a row in one category, we take everyone who raced both and use the middle of how much they moved (the median) as "the race". Whatever is left is the athlete. Doubles are compared only when the same two people raced both, and told as the pair's; relays are left out. A pair with fewer than 15 athletes in common is not shown. The summary above covers Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
11 races · 8 events
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Hamburg28 Oct 2026Individual Pro · MenDNF—
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Hamburg28 Oct 2026Individual Open · Men1:06:5422/579Beat 96%
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Toronto1 Oct 2026Doubles Open · Men52:58 PB1/726Beat 100%
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Toronto1 Oct 2026Individual Pro · Men1:10:56 PB63/404Beat 84%
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New York28 May 2026Individual Pro · Men1:11:0336/273Beat 87%
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Ottawa14 May 2026Doubles Open · Men56:284/455Beat 99%
↑ 586 days after Toronto 2024, with Omid Ebrahimi 0:24 better than the field Why ↓Close ↑
4:34 faster on the clock, and the race was 4:10 faster for everyone, so 0:24 of it was this pair.
The fieldCompare these two →4:10 faster This pair4:34 faster -
Ottawa14 May 2026Individual Open · Men1:04:10 PB5/356Beat 99%
↑ 223 days after Toronto 2025 0:00 better than the field Why ↓Close ↑
5:22 faster on the clock, and the race was 5:22 faster for everyone. Whatever changed, it changed for all of them.
The fieldCompare these two →5:22 faster This athlete5:22 faster -
Miami3 Apr 2026Doubles Open · Men56:132/999Beat 100%
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Dallas21 Nov 2025Doubles Pro · Men59:40 PB31/346Beat 91%
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Toronto3 Oct 2025Individual Open · Men1:09:3229/1264Beat 98%
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Toronto5 Oct 2024Doubles Open · Men1:01:029/179Beat 95%