The best ride I have ever done was taking the train 120 km due west from Calgary to Banff and riding back. The wind was 30 to 50 kph from the west. Coming across a flat section my average speed was over 55 kph for 20 minutes, the downhills were over 70. Did not unclip from the train station to my front door and done in 2:50. That was a fun day. The wind gods have not forgotten and punished me ever since.