Nordic Adventure Travel provides a nice interactive map of the Laugavegur trek, one of the principle attractions of Iceland.
The normal route is from the hot springs of Landmannalaugar to the glacial valley of Þórsmörk. That’s about 55km (34mi) over 2-4 days with potential stops at the mountain huts at Hraftinnusker, Ãlftavatn and Emstrur. By adding a day, you can continue over the Fimmvorduhals Pass to Skogar.
Any hike known as “The Hot Spring Route” goes on our list.
HIKING TREKKING TRAIL LANDMANNALAUGAR THORSMORK LAUGAVEGUR, HIKING TRAILS IN ICELAND
besthike.com 
Rick! You’ve been “discovered” by Gadling it seems! 🙂 Thanks to your Flickr images. Great shots by the way!
http://www.gadling.com/2006/12/06/photo-of-the-day-12-6-06/