Driving Directions from Toronto Pearson International Airport to PI

• From the airport, follow signs for Highway 427 South/Highway 401. 
• Continue to follow signs for Highway 401 West - London. 
• Proceed West on Highway 401. 
• Exit Highway 401 at Highway 8 West. 
• Exit 278 (Highway 8 West) and follow 8 West for 5 km to Highway #85, towards #7 East.
• Proceed on Highway #85 for 5 km to Bridgeport Road exit. Turn right at the off-ramp, traveling West. 
• Follow Bridgeport Road for 2 km into downtown Waterloo. 
• Bridgeport is a four-lane one-way road. It becomes Caroline Street at Albert Street. Continue straight ahead. 
• Travel forward another 200 meters, but ease over into the right hand lane. As you go down a hill and around a curve, look for the green Perimeter Institute sign on the right hand side. The parking lot entrance is just after the sign (past the historic grist mill that sits on the edge of Silver Lake). 
• Turn right into the PI parking lot entrance.