Optional 35-37: Sanctum of the Burning Souls
You can get here in Wild Lands, after completing all of Border Range, Tesso and Zelata quests you should have quite a few quests here to do. You need to find a group for this instance and make sure everyone is atleast 35+.

Optional 35-40: Wild Lands of Zelata
The VERY NE part of the map there is Vanir Camps galore! You can get here by following the road North from the Lynx's, there is also a ressurection point up here. Great if you die you are still close to getting back into action. If you happen to run out of quests and dont want to go to Kopshef for questing then there is an extraordinary place to AoE grind here. Take some practice and alot of running but your constantly killing it seems. Took me about 2 1/2 hours to grind 35-40 out.

Early 40's you can choose between two different zones. Field of the Dead or Tarantia Noble District.

40-43: Field of the Dead

Directly connected with Conall Valley. Questhub at Crossroads, Foothills, Stream Bridge. Follow the quests here in this zone while leveling. Like I previously stated. Quest as much as you can they are few later in the levels.

43-45: Tarantia Noble District

You can get here by crossing the bridge in Old Tarantia from the Trade District. Alot of good quests you can do here. Some are bugged some are not. The bugged quests for killing the NPC's seem to work if you do them in "Epic Instanced" mode. Also start your arena chains. Your gonna wanna come back to finish at 54.

45-50: Field of the Dead

Directly connected with Conall Valley. Quest Hubs at Lookout Point and Stream Bridge. Doing these with a little mix of grinding should get you to 50 without any problems. Also don't forget to try and do the Death to the Vanir line. Decent XP and good blue reward at the end.

50-60: Eiglophian Mountains

Direct connected with Field of the Dead in the SE. Quest Hubs at Main Town, Hunting Lodge and a few around the roads as you travel. Can do some decent grinding in Cannibal Cave once your 52. Later in the levels you can grind out 60 in the Vanir Camps West of Hunting Lodge.

60-62: Thunder River

You can get here through Poltain. Quest Hubs in the town and across the adjacent bridges. Decent grinding on Cannibal Camps on the SouthEast part of the zone. Quest as much as possible.

62-72: Atzel's Approach

You can get here through Lachiesh Plains. Quest Hubs by Entrance and at the First aoc gold Rez point. Quests will start becoming scarse. So you may have to grind some on one of the few camps I mention below on my AoE Hotspots section.

72-80: Keshetta

You can get here through Purple Lotus Swamp. A few quests to do here, although I suggest saving them for level 79. Can easily knock out half a level through the quests at 79. AoE grind alot here, look below on locations.