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SiS ‘Start Strong’ Challenge

Start 2020 strong by running 20 miles in 20 days with Science in Sport

January 20, 2020 to February 9, 2020
This isn't just a challenge, this is a mindset. Miles, Goals, Races, PB's - whatever you're chasing, start 2020 strong by completing 20 miles in 20 days fuelled by Science in Sport. This year we're challenging you to go beyond and make 2020 your best year yet. All challengers are eligible to enter the SiS Start Strong competition, where they have a chance to win big with 10 prizes up for grabs & receive an exclusive 20% off discount code to use at

To activate this offer challengers will need to sign up here: Once challengers have successfully signed up, they will receive a 20% off discount code.

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  • 84,611
  • 1,105,258
    Total Miles Run
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