  Modifying the Einstein's gravity at large distance scales is one of the
interesting proposals to explain the late time acceleration of the universe. In
this paper, we analyse scaling solutions in modified gravity models where the
universe is sourced by a background matter fluid together with a tachyon type
scalar field. We describe a general prescription to calculate the scaling
potential in such models. Later on, we consider specific examples of
modifications and apply our method to calculate the scaling potential and the
scale factor. Our method can be applied to any modified gravity model, in
presence of a tachyon field.
