For what it’s worth — I put together a spreadsheet of all the races I’ve run, the times I got and my average pace per mile. I haven’t run that many races, but if you consider that it’s only been a year, 10 events is not so bad.
I like how the marathon is still the slowest race in pace per mile I ever ran. And if I want to qualify for Boston, I will have to beat my best 5K times for 7+ times the distance.