Frank Horwill's 4 & 5 second Rule

It is possible to predict your performance at various events from 800m to the marathon using Frank Horwill's four second rule for male athletes and 5 second rule for female athletes.

Performance predictions

Select your event, enter your current time for this event, select your gender and then select the 'Calculate' button.

Event -
My event time is -	minutes seconds
Gender -

Predicted 400 metre time is -	minutes seconds
Predicted 800 metre time is -	minutes seconds
Predicted 1500 metre time is -	minutes seconds
Predicted 3k time is -	minutes seconds
Predicted 5k time is -	minutes seconds
Predicted 10k time is -	minutes seconds
Predicted 1/2 Marathon time is -	minutes seconds
Predicted Marathon time is -	minutes seconds

Page Reference

The reference for this page is:

MACKENZIE, B. (2003) Frank Horwill's 4 & 5 second Rule [WWW] Available from: http://www.brianmac.co.uk/frankhorwill.htm [Accessed

Associated Pages

The following Sports Coach pages should be read in conjunction with this page: