Taking the "less impressive" https://goo.gl/maps/t1soU1WKtb7UBuwA9 as an example, you're claiming 60kph (37 mph) for nearly an hour over flat terrain. According to this cycling calculator [1] with some generous assumptions, that's over 800W average for an hour -- smashing the world record of 440 [2]. Similarly, that handily beats the world record of 55km in one hour [3], set by a professional in a velodrome under perfect conditions with a custom bike (including being at altitude for lower air resistance)
These claims are from 30-40 years ago so I don't fault you for misremembering specific times and distances, but cycling is a sport where people really obsess over numbers and metrics, and these just don't pass the sniff test.
[1] https://www.omnicalculator.com/sports/cycling-wattage
[2] http://www.creakybottombracket.com/home/2020/1/23/events-the...