My sister Gillian lives in the Pennines (an area we both love), and she does fell-running. Rather like myself with morris-dancing, she's suffered from injuries and other issues, but picks herself up with determination, gets back to fitness and starts all over again.
For something you love, it's worth it.
This year, she's taken on a really big challenge - an 8-day expedition race in Scotland, going from Fort William to the top northwest corner of Scotland (the lighthouse at Cape Wrath).
All the participants wear trackers, so you can follow them.
I can see that she's made a good start and is now at Glenfirman
If you want to look, click here. She's number 92.
I'm rooting for her to make it to the end, but it's a tough course!