Hammer Trail is one of the toughest trail running on Danish soil and takes place every year in May in North Bornholm. The distances are 17 km, 25 km, 50 km, 50 miles and 100 miles. As a participant you get to experience the Baltic Sea views and try out the trails at the Bornholm rocks. You also get the opportunity to meet other trail runners, both during the race and at the barbecue dinner after the race.