Chicago street traffic, 5+ miles, I average about 11 mph. When I go faster I just end up getting stuck at more lights.

My commute is mostly uphill on the way to work (~4 miles and 700' climbing), which makes for an quick and easy commute home. It takes me about 25 minutes to get to work and only about 10 minutes home. This works out to about 10mph to work and about 25mph home, for a net average speed of about 14-15 mph.

18-20 on flats, real average is 15 becuase of stop lights

If I had a straight shot without traffic or stops my average speed is 20mph give or take for wind using a road bike for my commute. I strive to hold 20 mph AT LEAST when mixing it up with auto traffic. I can do 30 mph for a few blocks if need be.

Average including splitting lanes in traffic and negotiating busy intersections - I have no idea.

Nice. This is doable if I'm on my road bike and traveling light. But even then, for me to go that fast, I would not want to wear regular work clothes, and I'd get really sweaty afterwards (and require a longer cool-down period).

Average speed for me is about 11 or 12 mph. I try to ride to work once a week. Work from home few days a week. It's about 17 miles one way. Takes about 1hr 25min.

I got Strava website to collect GPS from my 130 and heart rate from my Apple watch running its Strava app if I run them at the same time. It's not all working perfectly. I don't think the watch and the Garmin are talking to each other during the ride and it seems like Garmin Connect is not receiving heart rate from Apple.

Anyhow, I am definitely not doing 20. More like 10

11 mph

11mph but a good third of my ride is block-by-block stop signs and there is a 2-mile uphill segment which slows me down quite a bit.

Used to live in a city that wasn’t that bike friendly (european measures) and then I always rushed my ride. Then we moved to a smaller town, still rushed it. After a while we moved to the countryside and I had a 38km one way commute. Then I went full kit and did it as a training session. For the weeks now I moved to a much more cycling friendly city and realized that my pace is way slower. Why? Well a lot more people use their bike for their everyday commute. And I have adapted to the speed of the city. It’s great.

city riding really kills averages. even on my mid drive e bike usually only around 14 to 15. if I crank up assist ad everything goes right maybe 17 but thats really pushing it

I cruise around 20mph on my Rad Rover 6

19 mph over 40 mi (round trip) ...
 

... completely depending on wind

10 miles one way, 40 to 50 mins depending on how many stop lights I stop.
Mostly on trail, but I have to cross 3 6 lanes stop lights that sometimes takes me 3 mins waiting.
Overall nice route with some 450ft elevation gain on both ways.
The only complain recently is that part of the trail along with a freeway entrance is dark because some #%^$@ stole the cables opening some the cable junction at the light posts are from the trail side - probably for copper.
That section is a descend and on my right the cars are on freeway or entering the freeway, so even with a good headlight, I have to reduce speed because I can't see well.

If it's warm enough that I'm gonna break a sweat regardless of how fast I'm going, I normally cruise on my 80s road bike around 16mph, If I can avoid sweating by going slower, I'll cruise around 11-12mph. If I'm on my single speed 90s mountain bike, I'm around 10-11mph.