Boom's planned range of 4,500 nm is actually only a marginal improvement on Concorde's 3,900. Their site advertises routes like "LA-Sydney", but at ~6,500 nm t

Boom's planned range of 4,500 nm is actually only a marginal improvement on Concorde's 3,900. Their site advertises routes like "LA-Sydney", but at ~6,500 nm this won't work without a refueling stop.