Strava has something called GAP which is supposedly grade adjusted, but I think it overemphasises the effect of hills on pace.
A calculator like the one on fellrnr would let you plug in a time for a distance and get predicted race times, if you did that with a range of distances you'd get a variety of predictions out and could see from that whether you're improving.
Thanks a lot! Fellrnr looks very good indeed - the most in depth one of these 'race time predictor websites'.
I've got all my data into a spreadsheet so would love some sort of formula so I can just replicate for each rather than plugging in each run individually.
Strava has something called GAP which is supposedly grade adjusted, but I think it overemphasises the effect of hills on pace.
A calculator like the one on fellrnr would let you plug in a time for a distance and get predicted race times, if you did that with a range of distances you'd get a variety of predictions out and could see from that whether you're improving.