In personal finance, they often talk about ‘passive income’ and making your money ‘work harder for you‘. The idea being that you set-up a side project which starts trickling in a bit of surplus cash each month without having to do any extra work. It’s not something I do – most of the traditional ways seem a bit leechy and middle-manny for my liking. But even so, it is something that has always stuck in the back of my head. Before I started streak running, 20 miles in a week was a great week for me. When I started doing 2 miles a day, I realised that I was getting in 14 easy miles without even trying. It reminded me of this passive finance idea. Passive mileage, if you will. Last year, about 15 months into my streak, I moved to a house which was 5 and a half miles from work. My workplace provides showers, and so I started running in to work 2 days a week. My passive mileage had doubled. Since then, I have gradually grown it, to the point where it’s not unusual for me to do 4-5 11 mile days on the bounce. I never intended for this to happen. I guess I just enjoy the commute – it’s as fast as public transport, cheaper, and it lets me indulge in hours upon hours of podcasts. Without going out of my way, my mileage now always breaks 30+ in a week This doesn’t come without cost: I find eating well to be a challenge. There have been some weeks where, despite running 40+ miles, I’ve still managed to put on considerable weight. It’s tiring – I’m not sure that come Friday, I’m that pleasant to be around (insert a joke here about Friday being no exception). And it limits what you can run at the weekend. Thanks to passive mileage, I no longer have a Long Slow Distance Run. It would be a foolish recipe for injury if I didn’t rest up at the weekend. But these are all things I’m working on. I’m measuring calories, and the weight is coming down. And I’m not currently training for anything. Needless to say, when I do train for a race again (I have my eye on a couple), this routine will all shift up. Is passive mileage for everyone? Goodness, no. But it works for me, I mean – it doesn’t make me run fast, it doesn’t make me run particularly far, but it does allow me to run a lot. All without having to adjust my normal routine. And that’s why I like it.