Can I sign my child up for a specific start time before the day of the event? Yes, you will select a start time for your child for either Mini Mudder or Mighty Mudder during the registration process. Related articles What are the requirements for my child to participate? How do I register my child for Tough Mudder Kids? How much time does a Tough Mudder Kids course take to complete? What is included with a Tough Mudder Kids registration? Do I need to pay to be a Tough Mudder Kids spectator? Comments 0 comments Article is closed for comments.