Thanks to everyone who suggested my friend and I went for our Week 9 Run 3 on board and not wait until we got home. After more Mojitos than I care to mention the night before, and losing an hour's sleep as we moved from Rostock across the Baltic towards Helsinki, we got up early anyway and only went and bloomin did it!
Runkeeper had lots of fun tracking the run as we sailed on - no Spirograph sadly but I can assure you we didn't cover the miles shown πππ.
We're both feeling very chuffed with ourselves having never imagined that we could complete this programme!