Progress against the field
From Utrecht 2025 to Heerenveen 2026, Liza Boomgaard and Fenna Boomgaard have moved with the field: what changed on the clock changed for everyone.
Over the same races everyone got 4:00 quicker, so 3:53 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 · Women, with Fenna Boomgaard, the one raced most; every comparison is in the list below.
Every race
5 races · 5 events
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Heerenveen14 May 2026Doubles Open · Women1:13:08 PB62/737Beat 92%
↑ 167 days after Utrecht 2025, with Fenna Boomgaard 0:07 worse than the field Why ↓Close ↑
Moved with the field: 3:53 faster on the clock, against 4:00 faster for everyone.
The fieldCompare these two →4:00 faster This pair3:53 faster -
Rotterdam15 Apr 2026Doubles Open · Mixed1:13:45 PB107/544Beat 80%
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Amsterdam21 Jan 2026Doubles Open · Women1:16:1735/307Beat 89%
↑ 257 days after Heerenveen 2025, with Dianne De Romijn 3:00 better than the field Why ↓Close ↑
3:00 better than the field: 5:55 faster on the clock, against 2:55 faster for everyone.
The fieldCompare these two →2:55 faster This pair5:55 faster -
Utrecht28 Nov 2025Doubles Open · Women1:17:01112/828Beat 87%
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Heerenveen9 May 2025Doubles Open · Women1:22:12146/566Beat 74%