The calculated distance (air line) between Pfäffikon / Pfäffikon (Dorfkern) and Bern is approximately 69 miles respectively 111 kilometers.
By car or train, the actual journey to Bern is certainly longer, as only the direct route (as the crow flies) between Pfäffikon / Pfäffikon (Dorfkern) and Bern has been calculated here.
Air line (approximately)
111 kilometers
60 nautical miles