To reach Andalsnes, you can take a train from Oslo or Bergen, which takes about 4-5 hours. Once in Andalsnes, the town is small and easily walkable. Alternatively, you can rent a car to explore the surrounding area more conveniently. Expect to spend around 300 NOK for transportation.
If you have more time, consider spending an extra day hiking in the nearby Romsdal Alps, or taking a scenic road trip to the nearby town of Alesund. If you have less time, consider skipping the Trollveggen Visitor Centre and spending more time enjoying the scenic views on your hike to Rampestreken.