Narrow alley with lots of small ramen shops. The ramen is cheap and the portions are big enough to get you going for a while. A must visit when you are in Asahikawa.

Ramen Sugawara
7-32 7 Jodori
1F Shichifuku Building
Asahikawa 070-0037
+81 166-22-4710

Visited September 2012. You can find my review about Ramen Sugawara also on TripAdvisor.