The distance from the Earth to Mars is constantly changing as both planets orbit the Sun in different orbits and at different speeds.
As of Jaunary 14, 2014 at about 4:5 PM Pacific time, Mars is about 1.22449 AU, and closing. That's about 113,823,456 miles. But the Earth is catching up, because the Earth is in a closer, faster orbit, and we'll be at our closest point of approach on April 8, 2014. At that time, Mars will be at about 0.62 AU away, which is not especially close as oppositions go.