  We have determined the distance to NGC 4258 using observations made with the
Hubble Space Telescope (HST) and the Wide Field, Advanced Camera for Surveys
(ACS/WFC). We apply a modified technique that fully accounts for metallicity
effects on the use of the luminosity of the tip of the red giant branch (TRGB)
to determine one of the most precise TRGB distance moduli to date: u(TRGB) =
29.28 +/- 0.04 (random) +/- 0.12 (systematic) mag (7.18 +/- 0.13 +/- 0.40 Mpc).
We discuss this distance modulus with respect to other recent applications of
the TRGB method to NGC 4258, and with several other techniques (Cepheids and
masers) that are equally competitive in their precision, but different in their
systematics.
