At what points in altitude and distance travelled did it normally pass through mach 1?
Mach 1 is achieved at around 32,000 ft.
Concorde cant be less than Mach 1 at 45,00 feet if you want to fly efficiantly.
reheat was only needed to get through the high resistance area around mach1
Afterburners are required to be used from around M0.96 to M1.7