Operating Repeaters On:

Also check out these repeaters :
444.950 ( + ) (tone 136.5) Clear Lake -- W0GC (linked)
444.300 ( + ) (tone 136.5) Clear Lake -- W0GC (linked)
146.985 ( - ) ( tone 146.2) Flandreau -- KC0TDA
145.110 ( - ) (tone 146.2) Verdi, Mn -- KA0BWS
447.000 ( - ) (tone 136.5) Verdi, MN -- WB6AMY (off air)
443.725 ( + ) Watertown -- K0TY ( IRLP )
145.390 ( - ) ( tone 127.3) Gary -- K0TY
146.850 ( - ) ( tone 146.2) Watertown -- W0WTN
146.730 (- )  Madison, MN
146.910 ( - ) Willmar, MN
147.195 ( + ) Marshall, MN -- W0BMJ
147.150 ( + ) (tone 141.3 ) Tracy, MN
444.675 ( + ) (tone 136.5) Tyler, MN -- KB0NLY
146.790 ( - ) (tone 141.3 ) Slayton, MN
147.120 ( + ) Montevideo, MN
147.075 ( + ) (tone 141.3) Pipestone, MN
147.285 ( + ) (tone 146.2) Humboldt (SD Link)
146.670 ( - ) (tone 146.2) Garden City (SD Link)
146.895 ( - ) ( tone 146.2) Sioux Falls --W0ZWY
444.200 ( + ) (tone 82.5) Sioux Falls -- N0IHX
440.175 ( + ) (tone 131.8) Madison -- KB0MRG
146.580 (simplex) (tone 71.9) Castlewood (Echolink)

APRS 144.390 Mhz digipeaters:

Watertown and Clear Lake
Brookings Volga and Elkton
Tyler and Marshall, MN
Turkey Ridge Tea Sioux Falls
Huron Pierre and many more....
 

View of the repeater site for the Brookings
146.940 machine.