I've done 1-20 in the last two nights. Basically, 1-10 was easy, just kill mobs in your starting area (I used South Gustaberg). Always go for the EP mobs, you'll kill them quicker, and at 100-150xp a go, you only need to kill 20 or so at the upper end of the curve to level up. 1-10 took no more than 90 minutes.
For 11-20, I started off in the Fumaroles (near Leaping Lizzy spawn area) and just repeated the process. Yes, it's boring, but it works. When I got to 13 or so, I went into Dangruf Wadi and headed to the large area at the south end of the map and just killed lizards and gobs until I hit about 16. Getting to 16 took maybe 2 hours, perhaps a little more.
My plan was then to head to Konschtat Highlands and repeat the same process again, but I ended up getting invited to a Dunes party, so I went 16-20 in the Dunes. Ironically running to the Dunes took longer than the 16-20 stint *laughs*
Two things to think about though; firstly, always get Regen+Refresh from the field manual. It basically means you can go non-stop without resting. I was averaging 12k/hr at the lower levels, and 8-9k/hr in the teens and never had to /heal once. Secondly, take advantage of the adventurer appreciation event going on at the moment. The Norvallen (think that's how you spell it) ring you get gives you +100% (or double) XP with an upper limit of 9000xp for 12 hours. A huge help. I was getting 25k/hr in the Dunes with it!
So all up, 1-20 took me perhaps 6 hours at most across two evenings. Post 20 I can't help yet, but I have a friend I'm going to try to duo with in Qufim.
Edited, May 13th 2011 12:25am by Drusenija
____________________________Drusenija - Resident Scholar of Asura "The game is nothing, the playing of it everything" - Simkin