I wonder if Iowa State has ever won five road games in a season so next week could be record-setting. Heck maybe we've never won four in one year before 2017.
According to the "Quick Hits" at the bottom of the athletics page, a 5th road win would tie the record (3 other times, though not since 1978). We've won 4 road games in 7 other seasons.
http://cyclones.com/news/2017/11/18/football-iowa-state-tops-baylor-on-the-road-23-13.aspx