To reverse my route, get to PR-100 & MB-200 and head south... At junction of 200 & 305 (near St. Agathe, restaurant), continue south on 200 (begin 8.5 miles of decent gravel) all the way to border crossing just west of Emerson.
I actually rode from Winnipeg towards the Northern Tier last year. One thing to note: There was a section of 200 closed south of the junction of 210 at Saint Adolphe. (I think it was a bridge was out.) This was August of 2011. I don't know if it's been fixed yet.
The route that I took:
- South on PR 200 out of Winnipeg (use city map to figure out how to get there.)
- East on PR 210 at St. Adolphe.
- 210 intersects PR 59. I headed on 59 south for about ten miles and would not recommend doing it. High traffic, gravel shoulder. (Manitoba REALLY likes their gravel shoulders, meh.) If I did it again, I'd stay on 210 and then head south on PR 206.
- West on PR 52.
- South on PR 216.
- You can take 216 all the way back to 59. Or, a few miles before that, take a left to get to St. Malo Provincial Park for some nice, inexpensive camping and a lake for swimming. (For some reason google maps is not showing the name of the road to turn onto.)
- Back on 59 south. The traffic is very light the rest of the way to the border. PR 59 becomes US 59 at the border, and continues south through Minnesota. Still light traffic, still no shoulder.
- You can camp at Bronson Lake State Park, a few miles off route, about 20 miles south of border. Swimming as well.
- Intersect the Northern Tier on 59 south of its crossing of US 2.
Also, we took US 2 towards Lake Itasca to connect with the Northern Tier. This is shorter than heading south on 59 to connect, but may not be as scenic. 2 is a four lane divided highway with humongous shoulders for the most part through here, so this might not be your cup of tea.