Pace tattoo

I'm off to a long-ish run of 21 km, about half-marathon distance. It's a progressive run where starting halfway through, I will increase my pace steadily up to half-marathon pace in the last km. My race pace is supposed to be 4:45min/km although I haven't tested that yet.


Even though I run without an iPod and I have lots of time to think, my math abilities become very bad while running. I lose track of things so I've decided to try a home-grown pace tattoo. It will hopefully wash off eventually.