The calculated distance (air line) between San Pedro Mártir and Ecatepec de Morelos is approximately 115 miles respectively 185 kilometers.
By car or train, the actual journey to Ecatepec de Morelos is certainly longer, as only the direct route (as the crow flies) between San Pedro Mártir and Ecatepec de Morelos has been calculated here.
Air line (approximately)
185 kilometers
100 nautical miles