  Distances of galaxies in the Hubble Space Telescope Key Project are based on
the Cepheid period-luminosity relation. An alternative basis is the tip of the
red giant branch. Using archival HST data, we calibrate the infrared
Tully-Fisher relation using 14 galaxies with tip of the red giant branch
measurements. Compared with the Key Project, a higher value of the Hubble
Constant by 10% +/- 7% is inferred. Within the errors the two distance scales
are therefore consistent. We describe the additional data required for a
conclusive tip of the red giant branch measurement of H_0.
