Career
He is credited as the first driver from Denmark. He started out in touring cars but became a Formula Two racer in 1972, with his best result being a fourth place at the Albi Grand Prix, finishing 17th in the European F2 Championship. In 1973 he raced a Lola in Formula 5000.
He also raced in a few non-championship races, finishing 8th in the 1973 BRDC International Trophy, and retiring in the 1974 BRDC International Trophy and 1975 Race of Champions.
He contested the 1977 Shellsport 5000/Libre series and finished fifth in a Radio Luxemburg-sponsored Lola T330-Chevrolet. He also qualified a Iso-Marlboro for the Frank Williams Racing Cars team at the 1973 Swedish Grand Prix, but could not start the race because his sponsorship money didn"t arrive.
In 1974 he tried four times to qualify for Williams, but was only successful in South Africa and Sweden. In South Africa, the clutch on Belsø"s FW failed on the first lap of the race.
In Sweden, he finished his only complete Grand Prix, in eighth place.