It’s very dependent in what city needs to be evacuated. I’ve lived in Ft McMurray, the city in this picture and its remote. It’s almost 500km from Edmonton, the next nearest big city, where most of these people will be evacuated to. Even if there was passenger rail service up to there each round trip would be over 10 hours. Evacuating almost 70k people by rail would not be feasible in this situation, not that it wouldn’t be a good option during an emergency in less remote city.