The Napoleon-mijlenloop is a recreational and performance run in Den Helder, organized by sv Noordkop Atletiek with Hotel Den Helder. Its name references the town's military past: Napoleon recognized the value of Den Helder's waterfront position and utilized it as a naval base.
The race attracts both casual runners and those seeking a specific time, indicating it is not exclusively for elite athletes. The history behind the event is De Stelling van Den Helder, a defensive system of forts constructed to protect the harbor and later connected by a line dike.