I admire your accomplishments, [MENTION=203117]jamesdak[/MENTION]! I was thinking similarly to [MENTION=325157]davester[/MENTION] about the terrain around here, which isn't actually terribly hilly. Here's the data for my riding in the past week:

• 20 Aug 2021, 28.64 miles, 13.4 mph AVG SPEED, 1,335 ft ELEV GAIN
• 21 Aug 2021, 49.54 miles, 13.9 mph AVG SPEED, 2,159 ft ELEV GAIN
• 23 Aug 2021, 51.48 miles, 13.8 mph AVG SPEED, 2,234 ft ELEV GAIN
• 24 Aug 2021, 20.03 miles, 13.0 mph AVG SPEED, 1,053 ft ELEV GAIN

Yeah, I'm pretty slow, but a contributing factor is also the stopping and starting involved when you're riding out of an urban center. Still, I don't think I could average 19 mph on a flatland ride!