A lot of us travel for work, here’s some microadventures you could have if you happen to be in England.
Catch a train to Stamford early one Saturday morning (there are almost no bicycle restrictions on trains on Saturdays). You will start and finish in this pretty market town. Use OS Getamap to print maps.
You don’t have to follow the border precisely, you are only using it as an excuse to explore places you’ve never been before. Go north towards Little Bytham to get out of town. After that, it’s up to you. Have a great time!