Central Red Army and I live about two miles apart. B2 in city of Trenton. CRA in West Trenton section of Ewing Township. (The train station where I do the bulk of my local "rail-fanning" is 0.5 miles from CRA.)
So if this were real pro sports with two teams playing a series, there would be very little travel involved.
The best parallel example, I think, from pro sports history was when the New York Giants played the New York Yankees in the World Series, with the Giants' home Polo Grounds IV in upper Manhattan and the Yankees' home the original Yankee Stadium in the Bronx.
It happened four times -- 1923, 1936, 1937 and 1951 -- with the Yankees, sadly, winning all four championships.
(The teams met two other times in the World Series when they shared Polo Grounds IV. The Giants, happily, won both championships -- 1921 and 1922. The original Yankee Stadium opened in 1923.)
The distance between the two was just over 1 mile, walking distance, with the Harlem River in between.
Below is an aerial photo that shows the short distance between Polo Grounds IV and the original Yankee Stadium. The view looks out past center field in Polo Grounds IV, which is right in the middle of the photo.
The Giants' clubhouse and the steps leading up to it are beyond center field in the small indentation. It was just to the right of the indentation, maybe 10 feet from the wall, that Willie Mays' made his immortal catch of a bomb that would have been a home in just about every other stadium at the time (with the possible exceptions being Tiger Stadium in Detroit and Forbes Field in Pittsburgh) hit by Vic Wertz of the Indians in the 1954 World Series (won by the Giants in a 4-0 sweep).
Polo Grounds IV was shaped like a horseshoe in the outfield. It was short down the foul lines -- 279 feet and 257 feet to left field and right field, respectively. But it had one of the deepest center fields in Major League Baseball -- 483 feet to the front of the clubhouse.
Polo Grounds IV also had a HUGE amount of foul territory behind home plate and beyond first and third base.
Lastly, a photo of the Mays catch. (What is REALLY STRANGE in the photo is that there is NO WARNING TRACK between Mays and the wall.)