if you guys want to skip ahead, I'll be posting the levels keys as I get them...

http://www.ebaumsworld.com/marathon.html

level 2: abminzefod
level 3: dngabgrase
level 4: pwieseryyn
level 5: ppqwiesebk
level 6: altorfjbfs
level 7: lmjmichael
level 8: wlyqwalkin
level 9: ohmmkrisfz
level 10: ssmilchzht
level 11: cmilkmanud
level 12: beixqdorfx
level 13: snjoeybcow
level 14: ydhxgizmox
level 15: thdqwalkin
level 16: mabgrasemh
level 17: qikshamada
level 18: zwmxmilchx
level 19: mxmilchxaw

 

level 20: omilkmanrk
level 21: hqckuhfell
level 22: ibiobauriq
level 23: alrunorunx
level 24: osbauerlrb
level 25: cpitbullln
level 27: smdweidehu
level 28: jpkochseln
level 29: kzfxqdorfx
leve 30: zgetfastbe