I live in country where we have one 7% climb for 1km (sorta), now I am in Alps and rented road bike. And it was not a big surprise that on first day I failed miserably to ride on nearby climbs, after one week I now can climb 5-7% for 3km, anything over 10% just makes me stop/bonk/fail. Anyways, today's stats says I have climbed 1km in 85km ride, which, for me, is quite impressive, taking in account my age and cycling history. So now I have plan/training target to get more fit for next year, to be able to get through 15% gradients