How far away from Earth is Mars? Mark Frauenfelder 6:35 pm Thu, Apr 4, 2013 D.S. Deboer says "Check this out! It's neat and really helped me grasp how far away Mars is. (Hint: It's really, really, really far away.)" How Far is it to Mars?(Ben shared this in the Google + Boing Boing Community. Join us there for fun link sharing and conversation!)