Question: > 
> To come back from injury to run a marathon, and to run a personal best to boot - it's just incredible!
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I'm just wondering how to structure this in French - I imagine you would also use the infinitive, but don't know if I need some sort of preposition to get the exact meaning across. My instinct was to use "pour revenir" but feel like that would translate more to "in order to come back". Perhaps in French it just wouldn't be phrased this way and I'm overcomplicating things! 

Any help would be appreciated!
Merci :)

Answer: 
L'accord du passé composé with these verbs is one of the most complicated thing in French language and even natives always make mistakes!

Here is a little recap:

* *Elle s'est lavée* -> sens réfléchi, she took her own shower, so accord
* *Elle s'est lavé les mains* -> There is a COD after the verb so no accord
* *Les mains qu'elle s'est lavées* -> the COD is placed before so accord with COD

For the verbs with a sens réciproque, you also have to take into account the construction of the verb, if it is direct or with a preposition:

* *Ils se sont regardés* -> "regarder qqun", no preposition, so accord
* *Ils se sont parlé* -> "parler à qqun", verb wih preposition, so no accord
--- sorry about my language ----

It's correct : Il s'était octroyé - quoi - ? The COD is before so you must agree

Ils se sont octroyé - quoi - ? une semaine de repos COD = after so you must agree