Progress against the field
Mark Valies and Roy Valies have gained 1:10 on the field from Amsterdam 2026 to Heerenveen 2026.
Over the same races everyone got 1:27 quicker, so 2:37 faster on the clock looks better than it was.
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 Doubles Open · Men, with Roy Valies, the one raced most; every comparison is in the list below.
Every race
4 races · 4 events
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Heerenveen14 May 2026Doubles Open · Men1:09:45188/494Beat 62%
↑ 113 days after Amsterdam 2026, with Roy Valies 1:10 better than the field Why ↓Close ↑
2:37 faster on the clock, and the race was 1:27 faster for everyone, so 1:10 of it was this pair.
The fieldCompare these two →1:27 faster This pair2:37 faster -
Amsterdam21 Jan 2026Doubles Open · Men1:12:22499/994Beat 50%
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Heerenveen9 May 2025Doubles Open · Men1:08:03 PB125/529Beat 76%
↑ 211 days after Amsterdam 2024, with Djero Riedewald 3:21 better than the field Why ↓Close ↑
3:21 better than the field: 6:58 faster on the clock, against 3:37 faster for everyone.
The fieldCompare these two →3:37 faster This pair6:58 faster -
Amsterdam10 Oct 2024Doubles Open · Men1:15:01409/855Beat 52%