Depends on which bike I take, the route I take, how I'm feeling, and the weather. If I'm on my road or TT bike (sometimes I have a TT after work) and decide to commute all the way from home to work (circa 21 miles), it can be 15-17mph if I'm feeling pretty good and the weather is on my side. If I'm doing my normal bike-train-bike, 12-14mph no matter the bike. And, like the other day, I was on my gravel bike, fully loaded (testing out kit set-up for upcoming bikepacking trip), it was about 9mph off-road over 25 miles.