Perseverance's marathon pace: one mile every 74 days

NASA's Perseverance rover finished a marathon on Mars on June 14, 2026. It crossed 26.2 miles, the full 42.195 km, on the 1,890th Martian day of a mission that touched down in Jezero Crater in February 2021.

That makes it the second machine ever to drive a marathon on another world. Opportunity was first, in 2015, and it needed 11 years and 2 months to get there. Perseverance covered the same distance in five years and four months, less than half the time.

The slowest split you will ever see

Five years and four months works out to roughly 1,942 days on the clock. Spread across 26.2 miles, that is one mile every 74 days, by our arithmetic. Call it the slowest marathon in the solar system.

It is not really a pace, of course. Perseverance was not running. Most of those days were spent parked: drilling core samples, waiting out dust, and working alongside the Ingenuity helicopter. The odometer only moved on drive days, and when it did the rover was quick for its class, once logging about 1,350 feet in a single Martian day in June 2025. More than 90% of the trip was driven autonomously, the rover picking its own line across the crater floor.

Fast for a rover, patient for a runner

An orbiter caught the moment. On June 13, NASA's Mars Reconnaissance Orbiter photographed Perseverance from above as a small green speck west of Jezero Crater, its tracks trailing behind it, a day before the odometer ticked past 26.2.

There is something familiar in all of this for anyone who enters marathon ballots. The distance is fixed. The waiting is the hard part. A rover took five years to earn its 26.2 on Mars, and plenty of runners spend nearly as long waiting for a bib on Earth. If you want to see how long your own odds might take, the ballot simulator will run the numbers.