Training - Improved Riegel Calculator for Half Marathon to Marathon

In 1977, Pete Riegel devised a formula for predicting race times, based on your existing performances. The basic formula is t2 = t1 * (d2 / d1)1.06, but the "1.06" can be improved upon. Specifically, when converting from half marathon to full marathon, it often provides what feels like an unobtainable time. From an analysis of over a thousand runners, we have produced a calculator that will give you a more realistic calculation.

Enter your half marathon time here:

Hours Minutes Seconds

Derby Tup pedroscalls Allie Hanneke Max71 DJ Bangey dan_a old mum Techthick Mrs Jigs (Luverlylegs) Ultra Kanga Kazzaaaaah!! Iampecunia DazTheSlug Evangel vintagexl Winded Schnecke Helegant run fat boy run72 Dvorak jiminy cricket Mr Logic Carpathius NRGEE
Site skin
Fetcheveryone is a publication of Hearst Magazines UK which is the trading name of The National Magazine Company Ltd, 72 Broadwick St, London, W1F 9EP.
Registered in England 112955. All rights reserved. Copyright © 2014.