What Is a 2 Hour Marathon
A 2 hour marathon is a marathon completed in exactly 120 minutes. Runners must average 4 minutes 17 seconds per mile (2 minutes 50 seconds per kilometer) for the full 26.2 miles (42.2 km).
Why the 2 Hour Barrier Matters
Breaking 2 hours is considered a milestone in professional distance running because it requires extraordinary endurance, pacing, and support. Only a small number of athletes have achieved the mark in controlled settings.
How Fast Is the Pace
The pace is roughly 4:17 per mile or 2:50 per kilometer. Elite runners use precise splits, pacers, and optimized courses to sustain this speed over the full distance.
For more details on the science and history of the sub 2 hour marathon, see World Athletics.
