I've been a runner for c. 10 years, now 46 yo. I love it and don't know how I got through life without it 
However, I do seem to have lost my mojo a bit of late and need some new motivation.
In 2013 I did 13 half marathons (i.e. 13/13/13). This year a took some swimming lessons and did a triathalon. I did think maybe i could develop that but have discovered I HATE swimming!
I've done a marathon in the past, glad I did but not something I want to repeat ATM. I reckon it took me the best part of a year to recover mentally and physically.
I don't fancy the obstacle/mud run things that are so popular, prefer low key local events.
So, any ideas?