I recognise that I can be a bit of a running snob, although I generally do not express my opinions out loud. One of the things I have found that I am secretly snobby about is the amount of mileage people run. I often hear people at work etc. talk about how hard they are training for a marathon (or half marathon, 10k etc.) and so I ask about their schedule and it's clear they are running very low mileage. I think for me, more so then their actual times, a person's mileage is what I use as an indicator to tell if they are actually serious about running and their training.
At lunch today a co-worker, who I thought was a decent runner because he talks about it all the time, was bragging about running 25 miles per week training for an upcoming half marathon. In that moment I instantly and unintentionally altered my impression of him and thought, given his low mileage, he should really talk less about his running in front of people.
I am likely unfair and maybe wrong in my thinking about what mileage people normally run. Is 25 miles a week a lot of running for most people? What is the minimum mileage someone can run per week that you would consider that person to be a serious runner?