It is speculated that this mark can be achieved only once per reboot.
UPDATE 4757 11-12-2013 Esker Made the mark of Roving reset once a RL day, rather than once per reboot.
Find and follow from start to finish the white 00000000000 line that is the Length of the town of Rune in the Alyrian ocean.
For wandering Alyria in search of interesting things, the Powers granted thee a Mark. You have been granted The Mark of Roving! You gain 46 practices!
NOTE : awarded 5,450,000 xp and 43 pp at level 38:219