Data journalism website FiveThirtyEight's marathon calculator is a helpful tool for runners looking to complete their first 42 kilometer race. The marathon calculator, built into an article on the site entitled 'How Fast Would You Run A Marathon?,' attempts to predict users' end times based purely on their training and race history.
Marathons are especially difficult for runners to prepare for, not only because they're grueling in and of themselves, but also because the distance means that runners can't simply run a full one in training. This means that, no matter how much training one puts in, they still can't make a confident prediction about their race time in the same way they could with a 10K, for example.
By taking as input a user's average weekly mileage in training and the times in their last two races, the marathon calculator can make a time prediction, helping runners to pace themselves correctly.
Marathon Pace Calculators
More Stats +/-
Female-Focused Running Shoes
Marathon-Centric Hotel Packages
Marathon Shoe Giveaways
Marathon Selfie Sticks
Motivating Marathon Apps
Free 2019 Report & eBook
Get the top 100 trends happening right NOW -- plus a FREE copy of our award-winning book.
Our Research Methodology
This article is one of 350,000 experiments. We use crowd filtering, big data and AI to identify insights.