As the crow flies, 35 miles north of the IL state line for me.
About 40 miles from Ohio, but only 30 from Canada.
I am about 85 miles south of Wyoming.
I am 100 yards from Baseline road, which was the boundary between the Kansas territory (slave) and the Nebraska territory (free). I am on the Nebraska side.
128 miles to Tijuana, Mexico; 231 miles to Arizona.
From my place in the far NW side of Chicago (east of Rosemont):
About 40 miles N to the Wisconsin border (driving)
About 35 miles E to the Illinois/Michigan border in Lake Michigan (as the crow flies)
About 30 miles SE to the Indiana border (driving)
My guess is that wolfman lives around Sterling Heights or Troy in Michigan.
20 miles east of Sichuan.
I live in Evansville IN, the southern-most city in Indiana. Give me 15 minutes on a high-traffic day and I can be in Kentucky.
For those who have enjoyed the trivia aspect of this thread there’s more fun to be had at The Degree Confluence Project and (more specifically) United States (visit information) for USA Dopers, where you can zoom in on your own state for places where the longitude and latitude are both at integer degrees (no minutes and seconds). In fact their mission statement is
There’s an older SDMB thread where we have played around with such things at Some Geography Trivia Fun: Degree Confluences.
I’m in Ireland. I live 50 miles/80km from the border with Northern Ireland, which is currently part of the UK, currently. 
150 driving miles to Mexico, or about 230 to either Arizona or Nevada.
It’s about 100 miles to the nearest border. Which is Ghana.
About 30 miles west of the Missouri state line.
I’m in Mesa County, CO, just a little east of 29-1/2 Road, which means I’m a little more than 29-1/2 miles from the Utah border. Pretty close for a state in the western US! 
Straight-line distance: about 23 miles to Indiana; about 233 miles to Canada (Ontario)
I’m in Scotland, the border with England is about 80 miles south of here.
I can’t drive directly to a foreign country. The nearest is the Republic of Ireland: two hours by car to Stranraer, two hours by ferry to Belfast, and another, what, hour or so to the border?
I’m in central Texas. The closet would driving six hours to the east to enter Louisana. Or driving 2 and a half hours to go into Mexico via Eagle Pass.
I’m about 530 miles from Georgia, which is the only state I could drive to from here.
I could hit the Florida state line in just under 9 miles, though…Atlantic side.
-D/a
I live in Iowa. From where I am sitting in my living room, if I turn my head slightly to the right I can see over the Mississippi to Wisconsin. If I continue my head turn a bit further, I can see Illinois.
At most. 45 minutes would probably do it. Didn’t realise the crossing was 2hrs. Had it in my head it was shorter up there.