Transportation in Oslo and between the venues.
Useful information about public transport within the City of Oslo can be found here:
Single tickets for 1 zone are valid for one hour and cost 34 NOK (seniors 17 NOK). 24-hour tickets for 1 zone cost 90 NOK (seniors 45 NOK) and are a cheaper option if you take more than 3 rides within 24 hours.
It takes 1 zone between the venue Professorboligen (city center) and Blindern venue.
Be sure to buy ticket before boarding public transportation, as there are hefty fines on not having a valid ticket (950 to 1150 NOK).