SDO uses electronic punching to track competitors and provide results. 

Orienteering competitions can take many forms. SDO events are usually Classic ("Long") or Score formats. 

At a classic orienteering competition, many different courses are offered based on age, gender, and experience. This allows everyone to participate and ensures an enjoyable time and comparable experiences. 

Competitor orienteers will train both their body and mind to complete each course as quickly as possible. Our friends at Orienteering USA offer many training resources.