Please help me create this list by posting here the trackers which fit the criteria along with the required seeding time and I'll update the first post.

ABTorrent	48 hours
Acid-Lounge	72 hours (120 hours for torrents > 20 GB) or 1 ratio
AlphaRatio	72 hours (7 days for torrents > 48 GB) within 10 days or 1 ratio
AnimeBytes	72 hours, more on torrents > 10GB
Appzuniverse	36 hours or 1 ratio
Awesome-HD (AHD)	72 hours or 1 ratio
BeyondHD	120 hours within 10 days or 1 ratio
BIGTorrent	72 hours or 1 ratio
BitHQ	1 ratio
bitHUmen	24 hours
BitmeTV	48 hours or 1 ratio
Blu-bits	48 hours or 1 ratio
Bluebird-HD	72 hours or 1 ratio
BlueTigers	2 hours
Blutopia	7 days
BroadcasTheNet (BTN)	24 hours for episode (120 hours for season) or 1 ratio
Carpathians	48 hours or 1 ratio, less for larger torrents
CartoonChaos	168 hours or 1 ratio
ChronicTracker	72 hours or 1 ratio
Cinematik	72 hours
CZTeam	120 hours within 2 weeks or 1 ratio
Diablo torrent	48 hours or 1 ratio
DigitalHive (DH)	72 hours or 1 ratio
eStone	24 hours or 1 ratio
FileList	48 hours or 1 ratio
FullMixMusic	48 hours or 1 ratio
FunFile	48 hours or 1 ratio
GazelleGames (GGn)	72 hours or 0.8 ratio
GForcesTracker (GFT)	48 hours or 1 ratio
GFXPeers	24 hours within 7 days or 1 ratio
Greek-team	72 hours or 1.1 ratio
HDCity.li	72 hours within 15 days or 1 ratio
HDChina	36 hours within 30 days
HDME	72 hours or 1 ratio
HD-Only.org	72 hours within 7 days or 1 ratio
HD-Space	24 hours consecutive (torrents less than 24 hours and 15 seeders)
HD-Spain	96 hours within 14 days or 1 ratio
HD-Sportbits	48 hours
HD-UNiT3D	72 hours
High Definition in Upxin	72 hours or 1 ratio
HorrorChannel	72 hours or 1 ratio, less for older torrents and higher userclasses
ICETorrent	48 hours in 15 days
IPTorrents	336 hours or 1 ratio
Libble	72 hours within 1 week
Metal.iPlay.ro	48 hours within 1 week
M-Team	48 hours within 7 days or 1 ratio
MyAnonaMouse	3 days within 30 days
Myxz.org	2 hours after completion and 24 hours within 3 days or 1 ratio
nCore	48 hours or 1 ratio
Nebulance	Episodes must be seeded for a minimum of 24 hours (1 Day) Seasons must be seeded for a minimum of 120 hours (5 Days)
Newinsane	24 hours within 14 days or 1 ratio
PassThePopcorn (PTP)	48 hours within 2 weeks or 1 ratio
PirateTheNet (PTN)	3 days within 3 weeks or 1 ratio, less for older torrents and higher userclasses
PiSexy	24 hours or 1 ratio
PiXELHD	72 hours
PolishSource	48 hours or 1 ratio
PreToMe	60 hours or 0.75 ratio
PTFiles	Max. 2 days
Redemption.pw	24 hours
Releasezone	48 hours or 1 ratio
Redtopia	1 week
SceneAccess (SCC)	36 hours or 1 ratio
SceneFZ	72 hours or 1 ratio
SceneTime	72 hours
Speed.cd	60 hours or 0.4 ratio
TehConnection	96 hours within 2 weeks
TorrentBD	48 hours
TorrentDay	72 hours or 1 ratio
Torrenting	freeleech for 7 days or 1 ratio
TorrentLeech	60 hours or 0.4 ratio
TorrentVault	48 hours or 0.6 ratio
TVChaosUK	24 hours (72 hours for series pack)
TvStore	1-2 hours
Worldboxingvideoarchive	48 hours or 1 ratio
X264.me	1 week or 1 ratio
XtremeWrestlingTorrents	24 hours or 0.7 ratio
XWT-Classics	24 hours or 0.7 ratio
WorldOfP2P	120 hours

-GazelleGames
-IPT
-GFT
-BTF

Cheers

Thanks @srn for this nice topic

IPT Required seeding time 336 hours
PIXELHD Required seeding time 72 hours
filelist Required seeding time 60 hours
ncore Required seeding time 48 hours
PTP Required seeding time 48 hours
freshon Required seeding time 48 hours
hd-united.vn Required seeding time 72 hours
scenefz Required seeding time 48 hours

protome (PTM) :The minimum seeding requirements on PTM for each torrent that has been downloaded for over 50% are:
Seed time: 60 hours (does not have to be contiguous, you can pause your seed and resume later)
OR
Ratio: seventy-five percent (0.75)

CartoonChaos : The minimum seeding requirements 168 hours or 1.0 Ratio

awesome-hd : seed snatched torrent for the ratio of 1:1, or seed for 72 ho

torrentvault.org : - You must seed a 0.6 ratio or 48 hour seed time on each torrent

GFT : Share all torrents for at least 48 hours

Sciencehd require 1:1 ratio or minimum of 72 consecutive or non-consecutive hours within a 7 day period.
d3sim require 1:1 ratio or 7 days quota.

@srn Good thread, Sticked

Thanks for the help and sticky. All added.

BIGTorrent: The minimum seeding requirements 72 hours or 1:1 Ratio
1stTorrent: 48 hours or 1:1 Ratio
X264.me: 1 week or to a 1:1 ratio
FunFile: 48 hours or to a 1:1 ratio
PolishSource: 48 hours or to a 1:1 ratio
HDME.eu: 1:1 ratio or 72 hours
PiSexy: 24 hours or 1:1 ratio

AlphaRatio:
For every torrent you download at or below 48GB, you are required to seed it 3 days (72 hours) or 1:1
You have up to 10 days (240 hours) in which to meet the time requirement.

For every torrent you download above 48GB, you are required to seed it 7 days (172 hours) or 1:1
You have up to 28 days (672 hours) in which to meet the time requirement.

TheConnection:
You must seed each downloaded torrent for a minimum of 96 hours within two weeks of completing the download.

fux0r.eu
Seed option 1: You can seed each download to a data ratio of 1:1, thats uploading the same amount of data as was downloaded.
Seed option 2: You can seed each download for a combined or concurrent total of 72 hours. You have 1 week to do this.

TvStore:
after download you must seed 1-2 hours!!

blu-evolution require 1:1 ration or 72 hour within 7days.
funfile require 1:1 ratio or 48 hour.

Done. Keep them coming!