O-Ringen

The O-Ringen is an orienteering competition based in Sweden. It takes place annually in different parts of the country. Orienteers from all over the world come to the event. The competition attracts significant media coverage and winning is often considered second only to the World Orienteering Championships in prestige.

The competition takes place in the month of July, and takes place over 5 days, where every active day is a competition stage. Competitors are assigned start times for the first four stages of the race, but on the fifth and final stage a "chasing start" is used. In a chasing start the overall leader in each class starts first and the remaining competitors start according to the total time they trail. This means that the first runner over the finish line on the final stage is the winner.