Manga:YES!

Anime:NO!

Manga is VERY easy to Marathon for me.Especially the Shonen battle series. (Considering that 1 chapter,is basically one fight.) Then again,there are ALOT of Manga that do take a bit to read.Death Note,and Monster for example.They take a VERY long time to read,especially the later volumes.This is mostly because,they are about 85% text,and 15% action.

Anime however,is very hard for me to marathon.20 minutes for a single episode? I can read a Volume of Fairy Tale in 15-18 minutes! Its the reason why,when a new anime series comes out,i may watch 1 or 2 episodes,and if its original source is a manga (And there's a high chance it is.) I buy the first 1 or 2 volumes.And if i am pleased with the series,i just read all of the Manga.Then maybe watch the anime later.If it does not end on the dreaded "READ THE MANGA ENDING!" As i like to call it. *Cough Watamote* *Cough Tokyo Ghoul* *Cough Deadman Wonderland* *Cough Blood Lad* (SO GLAD i bought the Blood Lad Manga,btw.Very Good)

This is most likely because i prefer Manga over anime,but i just cannot sit down for an hour,and watch 3 episodes of a series,when i can read 3 volumes (Which in shonen mathematics,is basically 8-10 episodes.) and get much farther.

For the same manga or anime, I set a limit of 3 episodes a day and no more...

I usually have many manga and anime to see xD  

Sometimes I marathon Animes when I don't have anything else to do. But usually I don't like to do that because I think that some animes are too good to watch very fast to the final episode.

And what comes to Manga.. Well, I don't actually read it much. I like more to watch Anime than read Manga.