The race, in three figures
The race, in words
Ivo Groot Koerkamp finished in the top 10% of the field at Heerenveen 2026, in 1:03:42 for 30th of 966 men in the Open division.
The sandbag lunges were the standout, 3:06 quicker than the median and 2nd of 966. Paced to finish: the second half went 1:02 better against the middle of the field than the first.
Athletes who raced both Heerenveen 2026 and Amsterdam 2026 were 2:33 faster here, so this time looks a little better than it was.
Eight blocks
Bar = field beaten · tick = median
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Block 01 7:21Running 1 3:23v median −1:14
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Block 02 6:12Running 2 3:33v median −1:09
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Block 03 6:52Running 3 3:40v median −1:18
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Block 04 7:38Running 4 3:38v median −1:21
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Block 05 8:06Running 5 3:53v median −1:15
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Block 06 5:33Running 6 3:50v median −1:09
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Block 07 5:45Running 7 3:52v median −1:09
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Block 08 8:43Running 8 4:14v median −1:23
Roxzone, per block
Approach · Exit 7:40
Against the middle of your field
Men · n = 949
A pace, not a person: at every mat, the middle of the 949 men who finished.