After lunch and the museum, it was 2 p.m. already so we split up. Abby and Beth went from Sparta to Onalaska, and I went from Onalaska to Minona, MN. We'd planned to do these shifts in order, but this way we didn't run so late.
The Great River Trail in Wisconsin (Onalaska west) is a pretty trail with occasional glimpses of the Mississippi River, an Indian burial mound visible from the trail (a small one, nothing like Cahokia -- but the same group of native Americans. Lots of wetland views in the national wildlife refuge and stage park.
At the end, it's 5 miles in Wisconsin to Winona -- downhill with a nice shoulder. The bridge itself has a narrow, seemingly plywood floored side path that worked ok since there was nobody coming the other way.