The race, in three figures
The race, in words
In the Doubles Open division at Rotterdam 2026, Siebe Birkhoff & Huub Birkhoff crossed the line in 1:10:31: 157th of 580 men's teams, faster than 73% of the field.
The burpee broad jumps were the standout, 0:45 quicker than the median and 74th of 580. Paced to finish: the second half went 2:01 better against the middle of the field than the first.
This was a quick course. Against their other races this season, the people who raced Rotterdam gained about 0:40.
Eight blocks
Bar = field beaten · tick = median
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Block 01 9:01Running 1 4:56v median −0:15
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Block 02 6:05Running 2 4:41v median −0:08
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Block 03 8:06Running 3 4:54v median −0:12
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Block 04 7:31Running 4 4:53v median −0:20
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Block 05 9:30Running 5 4:56v median −0:21
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Block 06 6:10Running 6 4:42v median −0:31
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Block 07 7:38Running 7 4:25v median −0:52
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Block 08 9:47Running 8 5:26v median −0:36
Roxzone, per block
Approach · Exit 6:49
Against the middle of your field
Men · n = 576
A pace, not a person: at every mat, the middle of the 576 men's teams who finished.