It all depends on the starting and ending points but a little over a thousand miles. If you want to know for sure just use mapquest. It will give you a good estimate of how far they are apart.
20 miles
about 1,300 miles
About 2500 miles
813.7 miles
10 miles
72 miles
264 miles
3789 miles
15 miles
45 miles
278 miles
25 miles