just curious. where does one go in the event of a thermonuclear war?
Pacific coast of the US, well away from military installations and cities.
Best to have a large bunker (that you don't tell anyone
about) with enough supplies to last you at least two years underground. Five years will be better.
Accept that you'll die from cancer at some point when you return to live on the surface. But people will be able to carry on with shortened lives for the next few centuries until the strontium and cesium decay away on the surface and the ozone layer rebuilds in the stratosphere.
A large supply of sunscreen will help with the missing ozone layer, but you'll eventually run out. There isn't much you'll be able to do about the cesium and strontium.
The nuclear winter should be over with by the time you come out of the bunker presuming that you stay underground for two or more years, so you probably won't have to worry about that.
Of course, much depends on the size of the nuclear war. My above advice presumes a very large nuclear war.