Some are more memorable than others. As described, the 25 stands out in the memory. The 10 I know what time I did, but it was just one of several very similar rides on the same course and the different memories of those tend to get conflated - was it the one my brother promoted, the one where the comp record was broken, the one where I knew at the end of the entry slip after less than a minute that I was on a ride? The 50 I have to look up to even see what time it was (and it was nothing special) and I don't recall any particular moment - I've covered some parts of the A31 at least 80 times this century, so they definitely tend to merge in to one recurring nightmare.
Some are more memorable than others. As described, the 25 stands out in the memory. The 10 I know what time I did, but it was just one of several very similar rides on the same course and the different memories of those tend to get conflated - was it the one my brother promoted, the one where the comp record was broken, the one where I knew at the end of the entry slip after less than a minute that I was on a ride? The 50 I have to look up to even see what time it was (and it was nothing special) and I don't recall any particular moment - I've covered some parts of the A31 at least 80 times this century, so they definitely tend to merge in to one recurring nightmare.