In German, there are multiple verbs for “to run,” with *laufen and rennen* being the most common. However, they’re not always interchangeable:
  • *laufen* covers a range of meanings from running, walking, to things “running” (like a machine or program).
  • *rennen* focuses solely on moving quickly—running or racing—with high energy.
VerbCore MeaningAdditional UsesTypical SubjectsNuance
laufento run; walkto function, to flowpeople, machines, fluids, programsDepends on speed/context
rennento run fastto race; dash (only for speedy motion)people, animalsMust express urgency/speed

laufen

laufen is extremely versatile. It can mean:
  • to run (fast or jog),
  • to walk (in some regions),
  • to work/function (for machines, devices, programs),
  • to flow (for liquids).

Examples

  • Wir laufen jeden Morgen. — We run every morning.
  • Die Kinder laufen zur Schule. — The kids walk/run to school.
  • Der Motor läuft gut. — The engine runs well.
  • Das Programm läuft noch. — The program is still running.
*laufen* can describe machines or programs working.
*laufen* covers running, walking, functioning, and even flowing.

rennen

rennen is more narrow: it’s only for moving quickly and energetically—running, dashing, or racing. It’s not used for walking or casual movement.

Examples

  • Wir rennen zum Bus. — We run (fast) to the bus.
  • Die Kinder rennen im Park. — The kids are running (fast) in the park.
  • Sie sind gegeneinander gerannt. — They raced against each other.
*rennen* is used when focusing on fast, energetic movement or racing.
*rennen* is not used for casual walking—only for fast, energetic movement.

Summary

  • laufen → run/walk, also used for machines/programs functioning; very versatile
  • rennen → run/ race fast with energy; only for speedy motion
*laufen* is used for casual running; *rennen* is for fast, energetic running.
Yes, *laufen* can be used for a program that is running.
German verbs for "to run" reflect nuanced views of motion and activity:
  • laufen is highly versatile, spanning running, walking, and even mechanical or fluid operation.
  • rennen is focused on swift, energetic movement, underscoring speed and urgency.
Understanding when to use each verb enriches your grasp of German dynamics and precision.