Progress against the field
Between Amsterdam 2026 and Heerenveen 2026, Leobart van den Ham lost 4:03 to the field.
Over the same races everyone got 2:33 quicker, so 1:30 slower 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 Individual Open · Men, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Maastricht19 Sep 2026Doubles Open · Men1:21:11610/816Beat 25%
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Heerenveen14 May 2026Individual Open · Men1:23:57467/966Beat 52%
↑ 113 days after Amsterdam 2026 4:03 worse than the field Why ↓Close ↑
1:30 slower on the clock in a race that was 2:33 faster for everyone: 4:03 lost to the field.
The fieldCompare these two →2:33 faster This athlete1:30 slower -
Rotterdam15 Apr 2026Doubles Open · Men1:08:40 PB67/310Beat 78%
↑ 138 days after Utrecht 2025, with Thijs Boone 1:23 better than the field Why ↓Close ↑
4:25 faster on the clock, and the race was 3:02 faster for everyone, so 1:23 of it was this pair.
The fieldCompare these two →3:02 faster This pair4:25 faster -
Amsterdam21 Jan 2026Individual Open · Men1:22:27 PB219/570Beat 62%
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Utrecht28 Nov 2025Doubles Open · Men1:13:05138/461Beat 70%