Madeline Island Marathon & Half Marathon Share: Madeline Island Marathon & Half Marathon Visit Website La Pointe, WI 54850 (715) 209-2622 Facebook Twitter About Map About Madeline Island Marathon and Half Marathon will take place on Saturday May 18, 2023. We recommend that all runners arrive on the island on Friday, May 17, 2023 and stay for the weekend. Registration What's Nearby? Distance: 5 10 15 20 25 50 mi.