Flame Warden of Northrend

Both Alliance & Horde Bonfire Locations

                          Alliance                    Horde
Borean Tundra      : Fizzcrank Airport           Bor'gorok Outpost
Sholazar Basin     : River's Heart               River's Heart
Storm Peaks        : K3                          K3
Dragonblight       : Wintergarde Keep            Agmar's Hammer
Zul'Drak           : The Argent Stand            The Argent Stand
Crystalsong Forest : Windrunner's Overlook       Sunreaver's Command
Grizzly Hills      : Amberpine Lodge             Conquest Hold
Howling Fjord      : Fort Wildervar              Camp Winterhoof

Enjoy ;)

Here are the new coordinates for TomTom for the Flame Warden of Northrend achievement:


/way Crystalsong Forest 78 74 Crystalsong Forest
/way Dragonblight 75 43 Dragonbligh
/way Borean Tundra 55 20 Borean Tundra
/way Sholazar Basin 48 66 Sholazar Basin
/way Storm Peaks 41 86 Storm Peaks
/way Zul'drak 40 61 Zul'drak

/way Grizzly Hills 33 60 Grizzly Hills
/way Howling Fjord 57 16 Howling Fjord

Horde:
/way Crystalsong Forest 80 52 Crystalsong Forest (Horde)
/way Dragonbligh 38 48 Dragonbligh (Horde)
/way Borean Tundra 51 11 Borean Tundra (Horde)
/way Sholazar Basin 47 61 Sholazar Basin (Horde)
/way Storm Peaks 40 85 Storm Peaks (Horde)

/way Zul'drak 43 71 Zul'drak (Horde)
/way Grizzly Hills 19 61 Grizzly Hills (Horde)
/way Howling Fjord 48 13 Howling Fjord (Horde)



Here's a map, with a rough estimation of the locations.

For those who prefer a visual, or those who are planning a route.