The calculated distance (air line) between Novogrudok and Svyetlahorsk is approximately 176 miles respectively 283 kilometers.
By car or train, the actual journey to Svyetlahorsk is certainly longer, as only the direct route (as the crow flies) between Novogrudok and Svyetlahorsk has been calculated here.
Air line (approximately)
283 kilometers
152 nautical miles