I remember running along the Thames in Hammersmith, west London. My grandmother had lived in that area as a child, I was running through history. Amsterdam was a bigger challenge, the canals made finding an loop that would return me to the hotel a challenge, I ran through the red light district - open for business in the pre-dawn hours. In Paris I ran along the Seine, though the Courtyards of the Louvre. In Savannah Georgia I remember reflections of the runner in the windows, and thinking "who is that and what is he doing?"
I only traveled for running once, to south Florida to compete in the Sprint Triathlon World Championships - as an also ran - the top 100 spots were invited, the other 900 were first come first served. I finished in the top 1/3 in my age group.
My running days, faded, as my travel schedule started to accelerate. Sometimes I will visit the hotel fitness center, some of them are quite nice. Often I just take a long walk. The gym closures for COVID have brought on bad habits, I need to keep moving to keep moving, both when I am home, and when I travel.