I'm with Flysmallie in zero and in fact even less than zero since I rarely float any Ozark waters for any real distance . That's a direct effect of not having a canoe or kayak.
Now if you asked how far would you travel to catch at least one trout in each designated trout park, Taneycomo, and designated trout stream in Missouri (plus at least one not designated anywhere) then I would answer over 2,200 miles .