Grindelwald is easy to reach by train. You don't need a car once there, unless you have booked remote accommodation.
Traveling to and in Grindelwald by public transport
Public transport in Grindelwald and the entire Jungfrau region is excellent, and we highly recommend using it. You can reach the village by train from Interlaken Ost in about half an hour. From the rail station 'Grindelwald Terminal' you can easily reach famous attractions such as Männlichen, Kleine Scheidegg and Jungfraujoch. The main railway station is called 'Grindelwald', and there are lots of connecting buses to the valley stations of First and Pfingstegg ad well as many other popular sites.
The town isn't that big, but it is hilly. If you have accommodation in the outskirts, you may need to count on some light descending or ascending on foot. Alternatively, you can take a bus.
Traveling to Grindelwald by car and parking
You can park your car at the railway station of Interlaken Ost and continue your journey to Grindelwald by train. The town can be reached by car too, and several parking lots are available: a few smaller ones in the village, and a large one near the railway station 'Grindelwald Terminal'. There are frequent train and bus services between 'Grindelwald Terminal' and the main rail station in the town center.