Cool Stars 14 - Submitted Abstract # 255 This version created on 05 October 2006 Distance Determination to Mira Variables Using Radial Velocity and Interferometric Measurements Lee Rottler, Caltech/IPAC Gerard Van Belle, Caltech/MSC David Ciardi, Caltech/MSC Graeme Smith, Lick Observatory We have observed a sample of Mira Variables in the optical with the Hamilton Echelle Spectrograph at Lick Observatory, at selected lines in the K band with the CSHELL at IRTF, and with the Palomar Testbed Interferometer (PTI) at Palomar Observatory. These measurements were taken over a large fraction of the variability cycle for the stars in the sample at all 3 observatories. Although the Lick and IRTF data were not taken contemporaneously, the PTI measurements were contemporaneous with all of the spectrographic data taken at these observatories. In this work we present the radial velocity curves derived from the Lick Hamilton Echelle data and correlate them to the angular size variations derived from the PTI measurements as a function of phase. By combining the spectral and interferometric data taken in the visible and IR it is possible to use a Baade-Wesselink analysis to determine the distance to each of the stars in our sample. We present our results using this method and discuss the accuracy of the distances found. ----------------------------------