The calculated distance (air line) between Uster / Kirch-Uster and Bern is approximately 66 miles respectively 106 kilometers.
By car or train, the actual journey to Bern is certainly longer, as only the direct route (as the crow flies) between Uster / Kirch-Uster and Bern has been calculated here.
Air line (approximately)
106 kilometers
57 nautical miles