The calculated distance (air line) between Stratford-upon-Avon and Bartley Green is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Bartley Green is certainly longer, as only the direct route (as the crow flies) between Stratford-upon-Avon and Bartley Green has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles