The calculated distance (air line) between Homyel' and Svyetlahorsk is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Svyetlahorsk is certainly longer, as only the direct route (as the crow flies) between Homyel' and Svyetlahorsk has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles