Danula II is the second planet in the Danula system.
In April of 2323, the Starfleet Academy marathon was held on Danula II. It was a 40 kilometer race, and the winner was Starfleet Academy freshman Cadet Jean-Luc Picard. He was the first freshman to win the race. (TNG: "The Best of Both Worlds, Part II")
Picard kept the certificate he won from this award in his family album. (Star Trek: Generations)
- Presumably Danula II is in Federation space.