In Valentine's event, an average Construct can travel 60 miles in just 1.5 seconds. I can't do calcs, so I just relied on Google. Apparently, it's Mach 187. Someone can correct me if I'm wrong. https://www.google.com/search?q=60+miles+per+1.5+second&rlz=1C1UEAD_enGB933GB933&sxsrf=ALiCzsYFF00XdnyJtfyFZ8KCeYvE1B-OcA%3A1656888469030&ei=lRzCYpq9AYyO8gL37aaIDg&ved=0ahUKEwja24PF5t34AhUMh1wKHfe2CeEQ4dUDCA4&uact=5&oq=60+miles+per+1.5+second&gs_lcp=Cgdnd3Mtd2l6EANKBAhBGABKBAhGGABQAFh9YN4FaABwAXgAgAFMiAGNAZIBATKYAQCgAQHAAQE&sclient=gws-wiz https://www.google.com/search?q=64+373.76+m+%2F+s+to+mach&rlz=1C1UEAD_enGB933GB933&sxsrf=ALiCzsYrKvPqjpvT5rTlGoalC7C43UpOeA%3A1656888535292&ei=1xzCYuaaEb6WhbIPw_Oz-Ac&ved=0ahUKEwim4s_k5t34AhU-S0EAHcP5DH8Q4dUDCA4&uact=5&oq=64+373.76+m+%2F+s+to+mach&gs_lcp=Cgdnd3Mtd2l6EAMyBAghEBU6BwgAEEcQsANKBAhBGABKBAhGGABQ-A9YrhxgzyFoAnABeACAAU2IAcYEkgEBOJgBAKABAcgBCMABAQ&sclient=gws-wiz