Running through Hyde Park and Kensington Garden is popular for a reason: wide paths, no crowds to fight through, and the route is smack dab in the center of London. Beyond that, it's filled with popular landmarks. Run the perimeter of the connected parks, or follow this path that seasoned runner Kevin Lusignea is fond of:
"Go past Buckingham Palace towards Hyde Park Corner, then cross through Hyde Park up to Marble Arch, take a left and follow the path along Bayswater Road, cross over into Kensington Gardens, past Kensington Palace, run along the Serpentine and into Hyde Park Corner."
Source: Instagram user raniayd