Intercontinental ballistic missiles (ICBMs), which are capable of carrying nuclear warheads, can travel at speeds of up to approximately 24,000 kilometers per hour (15,000 miles per hour) or Mach 20. This incredible speed allows them to traverse vast distances in a matter of minutes, making them a potent and formidable component of nuclear arsenals.

Here are some additional notable speeds related to nuclear missiles:

1. Submarine-Launched Ballistic Missiles (SLBMs): These missiles are launched from submarines and can reach speeds of around 20,000 kilometers per hour (12,000 miles per hour).

2. Cruise Missiles: These missiles are powered by jet engines and fly at much lower altitudes compared to ballistic missiles. They typically have speeds ranging from 800 to 1,200 kilometers per hour (500 to 750 miles per hour).

3. Hypersonic Missiles: Hypersonic missiles are a relatively new development in missile technology and can reach speeds exceeding Mach 5 (five times the speed of sound). These missiles pose a significant challenge to traditional defense systems due to their high speed and maneuverability.

It's important to note that the actual speed of a nuclear missile may vary depending on several factors, including its specific design, propulsion system, and mission requirements.