I developed this new route using Horse Tribes as starting faction. Sub 5 minute times can be achieved with either Dragons or Wizards.

The main advantage is less resets than orange, since you have TWO chances (top and bottom ruin are reachable within the first turn) to get allies in turn 1 (instead of turn 2 as in orange). That being said, I cannot confirm that this is stricly faster than starting as orange. However, if you look closely, I made some mistakes that would have been easy to avoid (under stress), so I missed a 3 minute time which is definitely feasible - although dependant on good RNG of course.