The calculated distance (air line) between Sint-Genesius-Rode and Charleroi is approximately 23 miles respectively 38 kilometers.
By car or train, the actual journey to Charleroi is certainly longer, as only the direct route (as the crow flies) between Sint-Genesius-Rode and Charleroi has been calculated here.
Air line (approximately)
38 kilometers
20 nautical miles