The fastest trip to the Moon was achieved by the Apollo 10 mission, which reached a speed of 36,800 kilometers per hour (22,886 miles per hour) on its way to the lunar surface in 1969.

However, it's important to note that this speed only represents the maximum speed during the journey. The actual time it took to reach the Moon was still around 3 days.

Here's why this information is important:

* Apollo 10 didn't actually land on the Moon, it was a rehearsal mission for the Apollo 11 landing.

* The speed achieved was a result of the spacecraft's powerful Saturn V rocket and the trajectory used to escape Earth's gravity.

* The average speed for the entire journey is much lower than the maximum speed.

While the Apollo 10 mission holds the record for the fastest speed attained during a lunar trip, future missions with more advanced technology could potentially travel even faster.