You may register online for the Wild Duluth 100K, 50K and Harder n' Hell Half Marathon by clicking the button below.  There is a small processing fee in addition to the race fee for registering online.  In addition, you can register online and avoid the online processing fee by choosing the pay by check option when you register online.


You may also register for the race, by clicking on the entry form below.   Open it, print it, complete it and send it along with a check or money order.  You will need Adobe Reader to open this .pdf file.

100K and 50K Entry:


Harder 'n He!! Half Marathon Entry:


  1. Anything for the kiddos?

  2. My husband and I are signed up for the half marathon but actually moved out of state and lost track of this event... Any way we could get refunded or donate our spots to someone else?

  3. Hoping to buy a bib from someone who isn't going to use theirs. Will pay extra... Please call or text 218-410-9594

  4. Hello! When will this site be updated and Registration for the 2019 100km open? I'm already excited for it!