The same 26.2 miles, run 4.1 million ways.

Free pacing research from recorded splits. Pick a course and a goal. See how finishes at that pace held up there.

Three ways to start

Plan your next marathon

New York City 2025

Finished
<1%

When the first runner finished New York City 2025, the back of the field had covered just 4.9 mi.

Before the gun · a guess

Of 100 finishes, how many ran their second 20K faster than their first?

The race, start to finish.

Eleven chapters, from the gun through the sustained slowdown to the finish line.

Start at the gun · Chapter 01

Your next marathon starts with a plan.

Plan your race