Competing in an orienteering event over the course of five days is the original and classic format of O-Ringen. This was the format when everything began in 1965, and it is still our most popular competition format.

There are six options to choose from:

Main class, includes everything from the Introduction class for the youngest competitors to competitions with assigned start times, where the winner is determined by an exciting chasing start on the final day of competition.

Short class, includes difficult, but somewhat shorter, courses than the main classes. Short classes have open start times, meaning that you can start on any available minute during the start window. The final stage features a chasing start.

Recreational class (Motion), These are easier and shorter classes with open start times each day.

Open classes, choose the length and difficulty of your courses. The classes are coupled with specific courses, and you can compete with everyone on that course regardless of age and gender. Afterwards, you can sort the results list to compare yourself against specific competitors. You can also tag your friends, clubmates, or colleagues, and easily create an internal competition with just those you have selected.

MTBO-class, These are the classes for those who prefer to orienteer at a higher speed using a mountain bike.

Trail-O class, a mental challenge, in which competitors pick out the right location of each control given several choices. Courses are designed in a way that makes them accessible for competitors in wheelchairs and with other disabilities.

Para-I, addresses people with intellectual disabilities. The level is green.