Directions to SAO at Cambridge Discovery Park, 100 Acorn Park Drive, Cambridge, MA 02140

From the West via I-90/Mass Pike:

Merge onto I-90 East toward Boston.
Take Exit 14, I-95 North/Rte. 30/Rte 128 North toward New Hampshire/Maine.
Merge onto I-95/Rte. 128 North via the exit ramp on the LEFT toward Waltham/Gloucester (5.9 miles).
Take Exit 29A onto Rte. 2 East toward Arlington/Cambridge (6.1 miles).
Take the Alewife Station exit off Rte. 2 (< .1 mile).
Take first right onto Acorn Park Drive (.4 mile).

From the South via I-95/Rte. 128:

Merge onto Route I-95 North/Rte. 128 North.
Take Exit 29A onto Rte. 2 East toward Arlington/Cambridge (6.1 miles).
Take Alewife Station exit off Rte. 2 (< .1 mile).
Take first right onto Acorn Park Drive (.4 mile).

From the North via Rte. 3:

Take Rte. 3 South toward Boston. Take Exit 25B and merge onto I-95 South/Rte. 128 South toward Providence, RI (4.8 miles).
Take Exit 29A onto Rte. 2 East toward Arlington/Cambridge (6.5 miles).
Take Alewife Station exit off Rte. 2 (< .1 mile).
Take first right onto Acorn Park Drive (.4 mile).

From the North via I-93:

Take I-93 South toward Boston.
Take Exit 32, Rte. 60 exit toward Medford Square/Malden (.1 mile).
Enter rotary and take 1st exit onto Rte. 60 West/Salem Street (.3 mile).
(Rte. 60 West/Salem Street becomes Main Street/Rte. 38) (< .1 mile).
Merge onto Mystic Valley Parkway/Rte. 16 West (1.2 miles).
Enter next rotary and take 2nd exit onto Alewife Brook Parkway/Rte. 16 West (1.4 miles).
Make a slight right onto Rte. 2 West (.5 mile).
Take Exit 60, Lake Street toward Belmont (.2 mile).
Turn left onto Lake Street (< .1 mile) and make a U Turn at traffic light to reverse direction onto Frontage Road.
Turn right onto Acorn Park Drive (.1 mile).

By MBTA from Alewife Station, the last station outbound on the Red Line:

Exit Alewife Station onto the divided street perpendicular to Cambridge Park Drive and cross the divided street to the opposite side (in front of the Pfizer parking garage).
Turn right and walk up the sidewalk along the exit ramp from Rte. 2. (As you face the ramp, you should be on the left side of the road.)
Proceed along the ramp and turn left at the first street on the left, Acorn Park Drive.
Cross to the right side of the street and continue past one building along the sidewalk.
100 Acorn Park Drive will be the second building on your right.