Miharashi-Iwa Rock Climbing

Most likely, you will be traveling from Nayoro, which is an hour train ride north of Asahikawa. From Nayoro you'll want a car. Head east on the 239 towards Okoppe and look for a bridge in Naka-Nayoro. If you hit Shimokawa, you've gone too far. There is a really shoddy bus shelter at the turn-off.
Cross the river on this bridge and take the first left (there's a small road that runs down to the river as well, you don't want that). If you crossed the right bridge, there will be a gravel pit at this point. Follow this road west and north for a bit through some fields. You'll cross three bridges; turn right to follow the river after the third one. This will shortly take you to a big gravel pit operation. Drive through like you belong there and follow the road straight into the woods (it will turn to gravel). A short ways into the woods you'll come across a locked car gate. Try some obvious number combinations or park at the gravel pit and hike in. Follow the road a bit past the gate and you'll come to a clearing, probably with cars parked. The entrance to the trail is marked with pink tape and is on your left as you come into this lot. The crag is a ten minute hike.