The calculated distance (air line) between Zürich (Kreis 12) / Schwamendingen-Mitte and Zug is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Zug is certainly longer, as only the direct route (as the crow flies) between Zürich (Kreis 12) / Schwamendingen-Mitte and Zug has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles