Calculate your race goal
Race result calculator
Got a running race booked or looking to start training for a new PB? Use our race time predictor to help set your new running race target.
You've seen what you're capable of with your current training. Want to go even faster than this? It's time to get training!
How to get there?
Frequently asked questions
We take your age graded performance of a recent race, and use factors such as your age and how much you're training to replicate this grade for all distances from 5 km to the marathon.
Typically, the more miles you do, the better you perform. This makes a bigger difference the longer the race - for example, increasing your weekly mileage is more important when training for a marathon than it is for a 5km race. This doesn't take into account the volume of cross training you're doing, the type of runs these are, or plenty of other factors that will make a difference, but will help to give you a good indication of a time you could aim for if you increase or decrease your weekly running miles.
Historically, biology has played a big part in our understanding of how men can run faster than women. On average, males have bigger hearts, bigger lungs, bigger stores of hormones such as testosterone, and lower body fat percentages. This is all very helpful for shorter running distances. Equally however, females have been found to have stronger stamina than males, and males are more likely to slow down during the marathon. In fact, for very long races (such as ultra marathons that aren't included in our calculator), the gender pace gap is believed to close and females have been found to out perform their male counterparts.
All of this is accounted for in our calculator, so you may notice different predicted race times for a male and female that are both training the same, and have a similar recent race time.
As most of the factors impacting the difference in times between males and females are relating to biological sex (e.g. if you are born male, the size of your lungs will likely be above the female average), we recommend using your sex opposed to gender for this calculation, if these differ.