5mi fartlek. Haha. Can't not laugh when I say it 😂 - I always feel a bit weird with these kinds of runs. I never know if I should speed up more frequently and/or for longer/shorter periods. I guess, by definition, it's not much of a 'speed play' if I pre-program my watch to do a fartlek. Momentarily had to pause to remove rocks inside my shoes. They're coming in from the sides now! That can't be a good sign but they just gotta last until my next 10k race.