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Super Shoe Time

Enter a time and the converted equivalent appears here.

Event Type
Fine-tune improvement rate
3.0%
1%2%3%4%5%
Conservative (track)Aggressive (marathon)

t_super = t_regular × (100 − r) ÷ 100

(r = improvement %; the reverse direction is the exact inverse. Preset rates are empirical estimates, not a published formula)

Real-world super-shoe gains vary by runner, shoe model, pace, and course — studies report anywhere from ~1% to 4%+. Treat these conversions as typical observed ranges, not guarantees.