It's been said the Blackbird would start a 180 turn over Dallas, Texas and complete it over Wichita, Kansas, completely missing the state of Oklahoma. Checking an online turn calculator, that seems plausible too.
1,750 KTAS (~mach 3.0)
15 deg of bank
335 NM turn diameter
18 minutes to complete the 180 deg. turn (10 deg. per min.)
525 NM flown
Straight line distance between Dallas and Wichita = 310 Nm
So yeah!
