Progress against the field
Between Maastricht 2025 and Heerenveen 2026, Naomi Van Der Vlis pulled 1:50 ahead of the field.
The clock says 9:28 faster, but the races themselves got 7:38 quicker for everyone.
The biggest step was Maastricht 2025 → Gent 2025: 12:48 on the field in 84 days.
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 · Women, the one raced most; every comparison is in the list below.
Every race
9 races · 8 events
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Heerenveen14 May 2026Doubles Open · Mixed1:18:03201/461Beat 56%
↑ 113 days after Amsterdam 2026, with Jens Bijlsma 1:56 worse than the field Why ↓Close ↑
1:56 behind the field: 0:11 slower on the clock, against 1:45 faster for everyone.
The fieldCompare these two →1:45 faster This pair0:11 slower -
Heerenveen14 May 2026Individual Open · Women1:39:14347/608Beat 43%
↑ 49 days after Mechelen 2026 8:41 worse than the field Why ↓Close ↑
7:45 slower on the clock in a race that was 0:56 faster for everyone: 8:41 lost to the field.
The fieldCompare these two →0:56 faster This athlete7:45 slower -
Rotterdam15 Apr 2026Doubles Open · Women1:22:38 PB149/466Beat 68%
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Mechelen26 Mar 2026Individual Open · Women1:31:29 PB324/776Beat 58%
↑ 104 days after Gent 2025 2:17 worse than the field Faster on the clock, behind the field Why ↓Close ↑
0:10 faster on the clock, yet the race was 2:27 faster for everyone, so 2:17 was lost on the field.
The fieldCompare these two →2:27 faster This athlete0:10 faster -
Amsterdam21 Jan 2026Doubles Open · Mixed1:17:52 PB182/496Beat 63%
↑ 54 days after Utrecht 2025, with Jens Bijlsma 0:27 better than the field Why ↓Close ↑
0:27 better than the field: 5:17 faster on the clock, against 4:50 faster for everyone.
The fieldCompare these two →4:50 faster This pair5:17 faster -
Gent12 Dec 2025Individual Open · Women1:31:39447/1009Beat 56%
↑ 84 days after Maastricht 2025 12:48 better than the field Why ↓Close ↑
17:03 faster on the clock, and the race was 4:15 faster for everyone, so 12:48 of it was this athlete.
The fieldCompare these two →4:15 faster This athlete17:03 faster -
Utrecht28 Nov 2025Doubles Open · Mixed1:23:09164/381Beat 57%
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Maastricht19 Sep 2025Individual Open · Women1:48:42251/348Beat 28%
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Heerenveen9 May 2025Doubles Open · Women1:41:27472/566Beat 17%