MinnMan

I checked "do the extra miles and get the century", b/c more times than not, that's what I've done. However, I don't always. Doing a century isn't really a big deal at the moment - I did 15 of them in 2019.

If am on my way home from a longish ride, I know what the mileage is going to be because I have lots of landmarks for which I know the mileage back to my house. So at mile 95 or even mile 90 or 80, I already know what the total is going to be when I get home. If it looks like it's going to be, say 98, more times than not, I'll change my route a little to add a couple of miles. If it looks like it's going to be 90 and I'm feeling energetic, I might add an extra loop to get an additional 10. But if the weather is bad or if I feel pressed for time for one reason or another, then it's no big deal fall short of the century.

I have never passed my house and kept going around the block a few times to make it a century.

I once finished an organized group ride that was advertised as being a century, but when we got back, it was 98.5. One guy rode around the parking lot until his head unit read "100". I thought that was pretty dumb, but to each, their own.