Shirt & Tabard rules for all challenges have changed. Only white or grey (green for Blood Thirsty) shirts & tabards allowed.
Cosmetic exception gear is also no longer allowed and will get you flagged (green is okay for Blood Thirsty).

Statistics

Numbers are neat. We have a Stats Graph too but be warned it's designed only for large desktop screens.

Challenge Victors
Exp Iron Blood Paci Tin
Legion 26 1 3 2
Warlords 25 0 3 --
Pandaria 24 -- -- --
Cataclysm 12 -- -- --
Status by Challenge
Total Alive Dead US EU
Iron Man 25473 7595 17878 14027 11446
Blood Thirsty 1252 425 827 819 433
Pacifist 592 199 393 382 210
Tin Man 454 92 362 260 194
Challengers by Race
Race Irn Bld Pac Tin Tot
Human 4831 256 43 113 5243
Dwarf 1818 94 14 39 1965
Gnome 892 62 20 32 1006
Night Elf 6023 240 307 87 6657
Draenei 1587 69 15 38 1709
Worgen 887 21 2 13 923
Pandaren 836 38 5 16 895
Orc 1469 96 9 25 1599
Troll 1323 98 26 14 1461
Tauren 1514 61 60 20 1655
Undead 2041 98 36 24 2199
Blood Elf 1913 105 55 32 2105
Goblin 339 14 1 354
Challengers by Class
Class Irn Bld Pac Tin Tot
Death Knight 69 9 1 395
Demon Hunter 3 1 6
Druid 802 45 92 8 2849
Hunter 2758 114 1 25 9486
Mage 446 25 6 3 1610
Monk 321 18 7 4 1310
Paladin 688 43 6 17 2430
Priest 464 38 13 7 1559
Rogue 426 19 68 6 2118
Shaman 388 16 3 6 1416
Warlock 580 29 1 8 2020
Warrior 650 68 2 7 2572
© 2017 James Young @ WoW Challenges. Not affiliated with Blizzard.
Iron Man concept by Ironbraids & wowironman.com site by David Cassagrande.