Longest Duration Spaceflights by Nationality

Comparing the peak continuous endurance records for astronauts from major space agencies participating in ISS operations.

The top 3

  1. Russian Cosmonaut All-Time Endurance Record: Valeri Polyakov holds the human record for the longest single spaceflight, spending 437 consecutive days aboard Mir. Valeri Polyakov
  2. NASA Astronaut Single-Flight Duration Leader: Frank Rubio set the record for the longest continuous stay by a NASA astronaut, totaling 371 days aboard the ISS. Frank Rubio
  3. ESA Astronaut Mission Duration Benchmark: ESA astronauts have consistently maintained long-duration presence on the ISS, with missions frequently exceeding 200 days.

Sources

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