Sounds right
From the Stardust site;
During the pre-dawn hours of Sunday, January 15th, the Stardust sample return capsule's entry will occur at approximately 2:57 am Mountain time. Peak re-entry heating is expected to occur at an altitude of 61 km, (200,000 ft or 38 statute miles). The main heating-phase occurs over northern central Nevada, somewhat west & south of the corresponding Genesis re-entry phase (Figures 1 & 2).
Interesting that the fastest manmade reentry will only be visible for around 30 seconds at the best locations, but you will have to wait for up to 3 minutes to hear the sonic boom.