Meredith Quinlan submitted this route:
The route starts at the Northern-most Lighthouse Hraunhafnartangi, which is metres off the Northern-most point in Iceland and travels through the wilderness finishing down at the Southern-most Light house, Dyrhólaey, also metres from the Southern-most point in Iceland. Its length measures as 557.3km
Incredible! Congratulations to you both on what must have been a truly epic adventure in some hectic conditions. The photos look awesome!