Earth to Moon Surface ∆V: 9.4+2.44+0.68+0.14+0.68+1.73 = 15.1 km/s Return from Moon Surface to Earth ∆V: 2.44+0.68+0.14+0.68+1.73 = 5.7 km/s Earth to Mars Sur

Earth to Moon Surface ∆V: 9.4+2.44+0.68+0.14+0.68+1.73 = 15.1 km/s Return from Moon Surface to Earth ∆V: 2.44+0.68+0.14+0.68+1.73 = 5.7 km/s Earth to Mars Surface ∆V: 9.4+2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 18.6 km/s Return from Mars Surface to Earth ∆V: 2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 9.2 km/s Yes, it's more, but it's really not _that_ big of an engineering stretch.