Trainaway.fit is probably the closest thing to what you mentioned, as they cover many countries. However, they only sell day passes. I used them a few years ago. Source: almost 2 years ago

I used https://trainasone.com/ for a bit when I used to run more. Seems like a perfect use for AI. - Source: Hacker News / 9 months ago

I'm currently using trainasone.com to generate my running plan. You can set a race goal or just set a general goal. Since it's adaptive, if you do something else or miss a day it will re-generate what it thinks is the optimal next workout for you. Source: 11 months ago

Hey guys, I got fed up with manually re-creating my workouts from trainasone.com in polar flow each day, so I hacked together a basic automation script at https://github.com/fneu/TrainOnPolar. Source: about 1 year ago

I had been using trainasone.com precisely for that purpose, I guess it’s completely redundant now as Garmin also knows when I haven’t slept well or I’m dead tired and adjusts accordingly. Source: over 1 year ago

I have downloaded a workout training file, .tcx file format, from trainasone.com. This is a workout to be completed today, NOT a previous, historical workout. Source: over 1 year ago