Boundaries
Western metropolitan corridor, historically on the city's outskirts before being absorbed. Pashan lies south, Balewadi west, Aundh north, and Savitribai Phule Pune University east. Baner Hill, at 2,224 ft, is the third-highest point inside city limits.
Neighbouring Balewadi carries the Shri Shiv Chhatrapati Sports Complex — host of the 1994 National Games and the 2008 Commonwealth Youth Games — and Balewadi High Street, with the Katraj–Dehu Road bypass running through it.
You will see Baner marketed on expressway frontage. I have not found a reliable source placing it directly on the Mumbai–Pune Expressway or NH-48, so I do not repeat the claim. What is verifiable is bypass access via Balewadi, which is a different and more modest statement.