IKEA Høje Tåstrup
Mårkærvej 15, Høje Tåstrup Denmark
Has some very clean rails of different varieties: Banana, flat, and handicap rails.
You can take busses from Høje Tåstrup S-station. Look at the busses' routes - it says Ikea where you have to get off. You can also skate to Ikea from the station - that takes about 15-20 minutes.