Yes biking. I returned with whatever viruses you can get with being within 20 feet of sheep , cows, the odd Hare, and returned, with 70 miles of exercise under my belt.
The issue you had there was weather was good and it’s near a road, so there is no filter, no “you need to really put effort in to be here” filter.
There are vast areas where you can spend days and weeks and struggle to get up close to others for any length of time, unless you wanted to. Most years, you’d want to (trust me, spend 7 nights in a tent).
I’m waiting til schools reopen then I can head out properly for a few weeks. I normally would do, say, a bike to John O’Groats in April / May when it’s longer days but still cool to keep the insects down and not summer holidays, but Scotland had rebuilt Hadrians Wall to keep the filthy English out.
For those away from UK, Paul is meaning this spot: