They moved very slowly and carefully, trying to avoid every road. They didn't know who to trust. A hard task for a dozen, but the crannogmen greatly helped detect and avoid people. It was a slow thing, but the size of the North played in their favour. After the Ironborn attacks, the lands around Torrhen's Square and Barrowtown were heavily affected. Often the reavers killed or burned everything that they couldn't take with them.