Originally Posted by
caloso
IANAMD, but if I were just getting back from mono, I'd spend the first two weeks doing nothing but long and slow. In fact, I'd pick a loop circuit so I could cut short or add on laps depending.
This is eminently sensible advice. Far more important than getting back into shape quickly is not getting back into the shape you were in with mono. My memory of coming back from mono (way back in the last millennium) was being barely able to walk to and from school, followed by claiming the recliner when I got home for a half an hour. And that was only half a mile, downhill.
Go easy, take it easy, don't push hard for at least the first couple weeks. Then plan on taking another month to build a decent aerobic base before you even think about doing anything harder.