As an athlete he became Norwegian champion in the 400 metres event in 1917. He broke the Norwegian record this year, clocking in 50.9 seconds. He improved his own record to 50.7 seconds in 1920, but lost it to Einar Mangset the following season. He also won silver medals in the 400 metres in 1918 and 1920, as well as medals in the 100 and 200 metres. He represented the sports clubKristiania IF.
Roll later served as a USvice consul in Oslo. During the occupation of Norway by Nazi Germany Roll resigned his post and joined the Norwegian underground. He was captured by the Gestapo and imprisoned in a concentration camp for a period. After his release, he allegedly helped Norwegians escape from concentration camps.