depends on which way you go and where you start from...i live in the SW part of Vegas(closest area to Pahrump) and it's about 50 miles...add 10-15 if starting from Henderson..

regardless the roads are good and it'll take less than an hour with good weather...

if you're looking to move to Pahrump and work in Vegas, the only problems you may have will be in the winter...there is a 5500' pass to negotiate on hwy 160 which gets snow, but nothing major...it'll just slow you down..