While you certainly can walk, we recommend going by city bus or taxi/Uber if you’re not traveling by car. The venue for Rikon is the building of the Faculty of Humanities and Social Sciences, part of the Rijeka university campus on Trsat. The address is: Sveucilisna avenija 4, Rijeka.

Source: Wikipedia
If you arrived in Rijeka by train, wait at the city bus station just outside the train station. If you arrived by bus, cross the road towards the sea, where you’ll see a city bus station. In both instances, wait for buses 8, 2, 7 or 7A. You can find bus schedules at each of the stations, and also online.
Bus No. 8 will take you to a stop just above the university campus. Bus No. 2 will take you to a stop just in front of the campus, near the Faculty of Humanities and Social Science (the venue). Buses No. 7 and 7A will take you to a bus station near Rijeka’s hospital, from where there’s a short walk back the way you came until you reach the crossroads and the turning into Slavka Krautzeka street, which will take you to the campus.
If you want to take a taxi, please consult this page.
If you are traveling by car, check out the handy map below.