Note! This is the old version of World of O which is kept only for historical reasons. Links are mostly dead - please use WorldofO.com

• 01 July 1998 : WMOC (World Masters Orienteering), Tsjekkia Czech Republic (East,Novy Bor), Club: OK Jiskra, 3000 competitiors
• 03 July 1998 : O-LAND98 Norway (Oppland,Lillehammer area), Club: Snertingdal, Rudsbyd, Torpa, 500 competitiors
• 07 July 1998 : 5 Days of Valle di Non - Trentino (Italy) Italy (South,Valle di Non), Club: Orienteering Club Predaia, 2000 competitiors
• 09 July 1998 : Dølauka (Sjulhustråven, Døladilten, Dølasprinten og Dølaspre Norway (Hedmark,Alvdal/Tynset/Kvikne), Club: Alvdal IL, Tynset IF og Kvikne IL, 500 competitiors
• 15 July 1998 : Nordvestgaloppen 1998 Norway (Sogn og Fjordane,Stryn), Club: Markane IL / IL Veten, 1000 competitiors
• 25 July 1998 : Sage Stomp 98" "O" Festival Canada (South,Kamloops), Club: Orienteering Association of BC, 500 competitiors
• 29 July 1998 : Bush-O Championship Norway (Vestfold,Helgeroa), Club: Larvik OK, 100 competitiors

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