| Division |
Difference |
W30-34 |
No change |
W35-39 |
Lower hurdles |
W40-49 |
Common spacing, lower hurdles |
W50-59 |
Common spacing, lower hurdles, fewer hurdles |
W60&up |
Common spacing, fewer hurdles |
W30-34 |
No change |
W35-39 |
Lower hurdles |
W40-49 |
Common spacing, common race distance, more but lower hurdles |
W50-59 |
Common spacing, lower hurdles, common race distance |
W60&up |
Common spacing, common race distance |
M30-39 |
No change |
M40-49 |
Lower hurdles |
M50-59 |
Common spacing, lower hurdles |
M60-69 |
Common spacing, lower hurdles |
M70-79 |
Common spacing, fewer & lower hurdles |
M80&up |
Common spacing, fewer hurdles |
M30-39 |
No change |
M40-49 |
Lower hurdles |
M50-59 |
Common spacing, lower hurdles, common race distance |
M60-69 |
Common spacing, lower hurdles, common race distance |
M70-79 |
Common spacing, lower hurdles, common race distance |
M80&up |
Common spacing, common race distance |