There's just three weeks until running challenge Jantastic returns to help runners beat the winter blues. Over 5,000 people have already signed up for the challenge, set up three years ago by Martin Yelling and Tom Williams - presenters of popular podcast Marathon Talk - and aimed at keeping runners on track through a personal online profile.
Similar to festive challenges such as Marcothon, Jantastic allows participants to track their own and other runners' progress and participants can boost fellow runners' morale with messages of support.
Jantastic describe the challenge as being: "all about getting 2014 off to a great start: getting you running, keeping you running and transforming your running. Anyone can take part. It's free, it's fun, it's really simple and it'll keep you motivated to run when it's cold and wet outside.
"The rules and ethos are still the same as before - it's about setting yourself challenging goals and striving to achieve them. But each year Jantastic has got bigger and better, and 2014 will be no different."
The Jantastic challenge is aimed at runners of all abilities, aspirations and fitness levels and starts on 6 January, running until 30 March. For more information visit the Jantastic website.