Smash through one of these obstacle courses, prepare to get muddy or just push yourself to the limit with one of our tougher challenges.

Taking on one of our events as a group? Call our Events team on 0207 025 2483 or email events@breastcancernow.org and we'll get you registered.

Events now registering

Looking for something different? We've got even more mud runs and obstacle courses around the UK. Explore more events

  • 5K
    Tough Mudder Half - Scotland

    Tough Mudder 5K Scotland

    Saturday 15 and Sunday 16th June 2019   

    Registration for this event is now open. 

  • 10-12 miles
    Tough Mudder Scotland for Breast Cancer Now

    Tough Mudder Scotland

    Saturday 15 or Sunday 16 June 2019   

    Register to join our Tough Mudder team and take on over 20 obstacles that will test your strength, stamina and mental grit.

  • 5K
    Tough Mudder Half Breast Cancer Now

    Tough Mudder 5K Yorkshire

    Saturday 27 and Sunday 28 July 2019   

    Register to join our Tough Mudder 5K Yorkshire team and take on 13 obstacles that will test your strength, stamina and mental grit.

  • 10-12 miles
    Tough Mudder Yorkshire

    Tough Mudder Yorkshire

    Saturday 27 and Sunday 28 July 2019   

    Register to join our Tough Mudder team and take on over 20 obstacles that will test your strength, stamina and mental grit.

  • 5K
    Tough Mudder Half Breast Cancer Now

    Tough Mudder 5K South West

    Saturday 17 and Sunday 18 August 2019   

    Sign up and join the Tough Mudder 5K South West team, which is a winning combination of awesome obstacles, gloopy mud and a course that will push you and your teammates to the limits.

  • 10-12 miles
    Tough Mudder South West

    Tough Mudder South West

    Saturday 17 and Sunday 18 August 2019   

    Sign up and join the Tough Mudder South West team, which is a winning combination of awesome obstacles, gloopy mud and a course that will push you and your teammates to the limits.

  • 5K
    Tough Mudder Half Breast Cancer Now

    Tough Mudder 5K North West

    Saturday 7 and Sunday 8 September 2019   

    Register for the Tough Mudder 5K North West and take on one of the muddiest courses with all new obstacles for 2019.

  • 10-12 miles
    Tough Mudder North West for Breast Cancer Now

    Tough Mudder North West

    Saturday 7 and Sunday 8 September 2019   

    Register for the Tough Mudder North West and take on one of the muddiest courses with all new obstacles for 2019.

  • 5K
    Tough Mudder Half Breast Cancer Now

    Tough Mudder 5K London South

    Saturday 21 and Sunday 22nd September 2019   

    Register to join our Tough Mudder 5K London South team and take on 13 obstacles that will test your strength, stamina and mental grit.

  • 8-10 miles
    Tough Mudder London South for Breast Cancer Now

    Tough Mudder London South

    Saturday 21 and Sunday 22 September 2019   

    Register to join our Tough Mudder team and take on over 20 obstacles that will test your strength, stamina and mental grit.