Apollo 11 didn't travel at a single, constant speed on its way to the moon. It went through several phases:

* Launch: After liftoff, the Saturn V rocket accelerated to about 25,000 mph (40,000 kph).

* Earth Orbit: Once in Earth orbit, the spacecraft circled the planet for a few hours while checking systems.

* Trans-Lunar Injection (TLI): The Apollo 11 spacecraft fired its engine to escape Earth's gravity and enter a trajectory towards the moon. This boost sped it up to about 24,000 mph (39,000 kph).

* Coasting to the Moon: After TLI, the spacecraft coasted for three days, slowing down slightly due to the moon's gravity.

* Lunar Orbit Insertion (LOI): Another engine burn slowed the spacecraft down enough to enter lunar orbit.

So, the average speed during the trip was around 2,400 mph (3,900 kph), but the actual speed varied throughout the journey.