A gas turbine engine comprises a plurality of distributed fan rotors. A gas generator has a core fan rotor. at least one compressor rotor. at least one gas generator turbine rotor, and a combustion section. A fan drive turbine is downstream of the at least one gas generator turbine rotor. A shaft is configured to be driven by the fan drive turbine, the shaft engaging gears to drive the plurality of distributed fan rotors. The core fan rotor delivers a portion of air into the at least one compressor rotor, and a portion of bypass air into a bypass duct which bypasses the gas generator. The bypass air mixes with products of combustion downstream of the at least one gas generator turbine rotor.