Progress against the field
Between Maastricht 2024 and Amsterdam 2026, Tom Van Iersel lost 3:43 to the field.
The clock says 4:39 faster, but the races themselves got 8:22 quicker for everyone.
468 days between Amsterdam 2024 and Amsterdam 2026 is the longest gap compared here, and the second race was 2:46 behind the field.
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
7 races · 6 events
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Amsterdam21 Jan 2026Doubles Open · Men57:40 PB18/994Beat 98%
↑ 54 days after Utrecht 2025, with Rüben Spapens 2:07 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:23 faster on the clock, yet the race was 3:30 faster for everyone, so 2:07 was lost on the field.
The fieldCompare these two →3:30 faster This pair1:23 faster -
Amsterdam21 Jan 2026Individual Open · Men1:07:31 PB41/570Beat 93%
↑ 468 days after Amsterdam 2024 2:46 worse than the field Faster on the clock, behind the field Why ↓Close ↑
1:26 faster on the clock, yet the race was 4:12 faster for everyone, so 2:46 was lost on the field.
The fieldCompare these two →4:12 faster This athlete1:26 faster -
Utrecht28 Nov 2025Doubles Open · Men59:037/461Beat 99%
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Amsterdam10 Oct 2024Individual Open · Men1:08:5729/659Beat 96%
↑ 264 days after Maastricht 2024 0:57 worse than the field Faster on the clock, behind the field Why ↓Close ↑
3:13 faster on the clock looks better than it was: the race was 4:10 faster for everyone, which leaves this 0:57 behind the field.
The fieldCompare these two →4:10 faster This athlete3:13 faster -
Maastricht20 Jan 2024Individual Open · Men1:12:1079/781Beat 90%
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Amsterdam4 Nov 2023Doubles Open · Men1:17:31192/411Beat 53%
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Amsterdam22 Oct 2022Doubles Open · Men1:07:3445/197Beat 77%