Artemis · Andy Weir, 2017
How far is Artemis from the Apollo 11 landing site?
~40km
About 40 km by train from the city to the Visitor Center at Tranquility Base. Just under a marathon.
From the bookReal world
Most visitors come to Artemis for Apollo 11. A train takes them from the Port of Entry out to the Visitor Center, where Eagle's descent stage still stands where Armstrong and Aldrin left it.
The distance, about 40 km or 25 miles, is from the book and Andy Weir. Eagle itself is about 7 m across.
Ride out to Tranquility Base