The calculated distance (air line) between Pithiviers and Paris 19 Buttes-Chaumont is approximately 49 miles respectively 80 kilometers.
By car or train, the actual journey to Paris 19 Buttes-Chaumont is certainly longer, as only the direct route (as the crow flies) between Pithiviers and Paris 19 Buttes-Chaumont has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles