At first, according to the rules of IAAF, the height of the hurdles for juniors was 107cm, but in some countries a-metre-high hurdles were still used. Moreover, sometimes a 6.25kg shot was used instead of a 6kg one.
Overall, the situation is quite confusing. Does anyone have more information on this matter?
| World men’s U20 heptathlon all-time list |
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| World men’s U20 heptathlon all-time list - shot 6.0kg; Hurdles 99cm |
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| World men’s U20 heptathlon all-time list - shot 7.26kg; hurdles 107cm |
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