Why can't I search "Nationwide"? It only allows me to search up to a 100mi radius.

I don't know why but changing the zip is a work-around.

That link did not work for me but here is the text ----------------- If you're using our Advanced Search, you won't be able to expand beyond 100 miles until you reach the results page. This helps us initially weed out any potentially bad matches. However, if you're using our regular search, simply including more specifics in your criteria (such as year or price) will allow you to expand your radius.

I think some browsers cause this problem. I use Chrome.

Hey, guys I just found a fix for this exact issue. go to your Google settings, click privacy and security, third-party cookies, see all site data and permissions, once your in see all site data and permissions search for the Cargurus site click the trash bin icon to clear all your cookies log back in and you should be able to search nationwide. I don't know why this happens but hopefully, this fixes it as it worked for me GL.