Offers expire on the date indicated at the bottom of the promotional email or website. Enter the code at point of purchase for your offer to be applied. Cannot be retroactively applied or combined with any other offers. Not valid for Tough Mudder Season Pass, or Toughest Mudder. Changes or transfers to another event can be made for a $30 fee per participant, plus any increase in ticket cost, if applicable. Participants who no-show without a change or transfer prior to the scheduled event date will forfeit the amount of the purchased ticket.