Is there any good way to watch NASCAR race live for free on PC?

May be...

yes click on nascar.com and click race buddy you will have several views to pick from

ATDHE.NET

you can watch all types of stuff on there, including NASCAR!

channelsurfing.net is decent, but not as good. check out atdhe

I work on Sundays which is unfortunate for NFL and NASCAR seasons. I use channelsurfing.net They always have the races there live and the feeds are decent. You are not going to get HD quality but for the most part it works great.

Install satellite tv software on your PC,With it you can watch NASCAR race and many tv channels live for free on your PC.Here you can get it.
http://tinyurl.com/np6lm4

the internet

if you do not have a chance or reason to not watch a Race on TV you have problims , you can move away from the computer.. it will not run away..boot nokian