This year we went swimming instead (well sort of... the pool was too busy to really swim!) But my mum, sister and I have been on a family run before for christmas.
If I'm with my boyfriend's family, they're usually busy and do the a big family christmas. It does make it difficult to fit in a run, but I usually do on either on Christmas eve or Boxing day (or both).
I checked my app and maybe I did it a disservice. I got to level 50 at which point I got the choice to pay 69p, invite friends or do some extra quests. Taken me a while to do the quests as you only get 1 turn a day or something like that. Maybe I just need to persist with those quests and more levels will unlock!