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Rogaining is team sport of long distance cross-country navigation and enjoying. It is closely related to orienteering and many people enjoy both sports. The events can take up to 24 hours on route choosen by the competitors.
retkilehti.fi
Maanmittauslaitos
Kattosauna
Rogaining in Finland
Rogaining (wikipedia)
International Rogaining Federation (IRF)
Rogaining Rules (IRF)