By plane:
Flights to the airport of Copenhagen-Kastrup (CPH) with all major international airlines.
Taxi from the airport to Ballerup approx. 350-400 Danish Kroner (= roundabout 45-55 € / US$)

By car:
From Skandinavia: 
via Malmö or Helsingborg, follow the E 47/E 55 direction south, exit at exit 23 (Jyllinge Vej), keep the road direction Ballerup (in turns into a motorway) and leave this motorway at exit Ballerup C, turn right onto the Ballerup Boulevard and you will see the hall on your right. Turn in at the next possibility on your right.
From Central Europe:
In Germany take the highway A1, A7 or A24 direction Hamburg. 
From Hamburg you have the choice:
1)
to go all the way by road (continue on the A7 direction Flensburg, Roskilde, Købnhavn) over the new bridge (toll= 30 € one way, + roundabout 200 km longer way) to Denmark. 

2)
to insert a relaxing 1 hour ferry trip from Puttgarden to Rødby Havn (proposed). For this continue from Hamburg on the A1 direction Lübeck / Puttgarden / Rødby until you hit the Ferry-harbour in Puttgarden. Ferries go regularly every 30 minutes or so (price per car incl. 5 Pers.: roundabout 95€/US$).
In Denmark follow the E47/E55 direction Købnhavn. After exit 27 change over to motorway 21 (ring IV). Continue on this motorway direction Ballerup. Leave this motorway at exit Ballerup C, turn right onto the Ballerup Boulevard and you will see the hall on your right. Turn in at the next possibility on your right.