You can reach the Foundation for Auditing Research (situated in Nyenrode Business Universiteit) by taking the exit for Breukelen (no. 5) from highway A2. Follow the signs for Breukelen. After crossing the bridge over the Amsterdam-Rhine Canal, take the first exit at the roundabout (right turn). Continue along this road until you see Nyenrode Castle on your right hand.
Parking is available in parkinglot C-D from where you can cross the bridge to the main building.
By public transportation
From Utrecht Central Station, take bus 120 to Amsterdam until you see Nyenrode Castle (Kasteel Nyenrode stop).