World Marathon Index: Verified Marathons (Jan–Jul 2025)

Explore our complete A–Z index of verified marathons from January to June 2025, each with 1,000+ finishers and sub-3 hour performances.

World Marathon Index: Verified Marathons (Jan–Jul 2025)

Welcome to the full A–Z index of all verified marathon profiles published on Sub-3.

Additional 2025 events will be added in due course, following verification of results and sub-3 data. Every race listed here meets the following criteria:

  • At least 1,000 finishers
  • Open to the general public (no elite-only or invite-only events)
  • Verified 2025 results with sub-3 finishers

We prioritise courses with the potential to support sub-3 performances, but inclusion in this list does not imply endorsement or ranking. For that, see our World Marathon Rankings page.

Know a marathon we’ve missed? Let us know — we’re always expanding.


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