Hi Drosera and welcome to WAB, you sent me an email asking where I did my walking.
I like the Gower peninsular (in winter, less crowded), The Brecon Beacons, the Welsh WWT Llanelli, Pembray country park and anywhere where its remote and Quiet, I hope this answers your question.
By the way I've only lived at my present address for about 6 years, but I know the roads you mentioned quite well.
Thanks for the PM and to correct me : )! I haven't ever visited Stockholm, but I thought it would be just courteous of me to welcome you (in my attempt) in Swedish!!