His personal best triple jump was 15.49 metres, achieved in August 1939 at Bislett stadion.
[1] With this he was a European record holder for a period,[2] beating the old mark by Vilho Tuulos by one centimetre.
Strøm also had a 15.82 metres jump in September 1939 in Gothenburg, albeit with an illegal wind assistance of about 8 m/s.
[7] His personal best long jump was 7.465 metres, achieved in September 1937 at Bislett stadion.
[8] Representing the club IK Grane, he took the silver medal at the Norwegian championships in 1938, behind Nils Uhlin Hansen, and in 1939 he won the gold medal ahead of Nils Uhlin Hansen and Eugen Haugland.