[Tedeschi]

I had completed around 90 episodes of Hunter x Hunter within just 3 days watching every episode to it's entirety.

[MarickVB]

The entire Yu-Gi-Oh show (the original series), followed by Elfen Lied and 1st season of Sword Art Online

[Monkey D. Dragon.]

Re watched one piece for a few hours memory's =D

[smiglo5]

Sword Art Online (first one) in one sitting, i thought thats gonna be just bad, but I liked it, really nice one!

[tatsucheng]

I had finished Hunter X Hunter 2011 only in 3 days :D #longest marathon.

[zSteve]

The longest marathon I have done is for JoJo's bizarre adventure which I watched straight up to the newest episode which was episode 10 of Stardust Crusaders.

[HOPE X]

deathnote
Zero no Tsukaima
Wakfu Season 2
Wakfu
Acchi Kocchi TV must watch

[Nostril]

Just started anime two days ago, and my longest was 3 hours.

[SKT T1 Faker]

yeh i also did that with inuyasha that was such a good anime haha :D

[ℳanny]

The most I marathon-ed was about 2.4 days worth without sleeping. (2 days 4 hours to those that don't know)

[Nostril]

Tomorrow I plan on watching for about 24 hours, get some sleep, and watch it for another 24 hours.

[HF User]

I have a thread located here.
Shit was fucking nuts.
I felt like I shit in my pants.

[Sil3ntdogood]

my honest record for anime is around 3 hours, but I also didn't really have the time since school was always in the way.. lol

[SKT T1 Faker]

iv watched for over 5 hours one time it was like my highest number haha

[SKT T1 Faker]

jeeze how do u guys have so much time for that haha im so busy nowadays