Says the Australian AF.
Anyway, if the F-35's combat radius with combat and reserve is 1400Km, then it exceeds even the Su-35S's combat radius in such conditions. That's unlikely.
40% of the F-35's estimated basic range of 2800Km gives us 1120Km.
The Israelis wouldn't consider the F-15E to have more range than the F-35 if that wasn't the fact.