He finished at the European Athletics Championships 1978 in Prague on the 15th place in the 10,000 -meter run. In the marathon, he was ninth at the European Athletics Championships in 1982 in Athens. About the same distance he reached at the World Athletics Championships 1983 in Helsinki the 26th Place and in the 1984 Olympics in Los Angeles 33rd place.
Øyvind Dahl is 1,81 m tall and had a competition weight of 64 kg. The Norwegian champion in 1981 in the 10,000 -meter run and the 25 - km road race started for Idrottslaget i Bondeungdomslaget i Oslo.
- 5000 m: 13:34,9 minutes, 3 August 1978, Oslo
- 10,000 m: 28:32,5 min, August 13, 1978 Steinkjer
- Half Marathon: 1:02:46 h, March 30, 1980, The Hague
- Marathon: 2:11:40 h, May 3, 1980 Karl- Marx-Stadt