A lovely ride up the Southern Upland Way to Lauder on my Gravel Bike bagged the one tile i missed a couple of weeks ago.
This combined with two outliers over by Earlston on the way back now means i'm finally at 18x18!
Total tiles is now 10007, with my cluster at 713.
I've now run out of roads / tracks to expand on 18x18, so i think i'll now concentrate on my cluster, rather than taking up hill walking. It's supposed to be fun after all