Time out

Race for­mula misses the mark

Runner's World (UK) - - Warm Ups -

Race pre­dic­tors are use­ful when you’re fig­ur­ing out your PB po­ten­tial, but a new study2 sug­gests the widely used Riegel for­mula is too gen­er­ous for non-elites in fore­cast­ing race times be­yond a half marathon. Re­view­ing data from 2,000 recre­ational run­ners, the re­searchers found ‘the for­mula dra­mat­i­cally un­der­es­ti­mates marathon times, giv­ing times at least 10 min­utes too fast’.

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