The calculated distance (air line) between Krasnapollye and Svyetlahorsk is approximately 84 miles respectively 136 kilometers.
By car or train, the actual journey to Svyetlahorsk is certainly longer, as only the direct route (as the crow flies) between Krasnapollye and Svyetlahorsk has been calculated here.
Air line (approximately)
136 kilometers
73 nautical miles