We will discuss solutions in Type IIB supergravity, whose field theory duals exhibit walking dynamics, in the sense that a suitably defined gauge coupling stays nearly constant over an intermediate range of energies. These supergravity backgrounds are deformations of the well-known Maldacena-Nunez and Klebanov-Strassler solutions. Computing the spectrum of scalar glueballs, we find that these theories contain a parametrically light state, the mass of which is suppressed by the length of the walking region.