# Which races are in December 2026, and can you still enter?

14 tracked events have a race day in December 2026 as their organisers state it; 6 read open for entry at the latest check: BMW Dallas Marathon 2026, ADNOC Abu Dhabi Marathon 2026, Kiawah Island Golf Resort Marathon 2026, JAL Honolulu Marathon 2026, Muang Thai Chiang Mai Marathon 2026, LIDL São Silvestre de Lisboa 2026. Each status is read on the organiser's own registration page and dated.

- Kepler Challenge 2026: sold out since 2026-10-27, race day 2026-12-05: https://bikoosh.com/races/kepler-challenge
- St. Jude Memphis Marathon Weekend 2026: sold out since 2026-10-27, race day 2026-12-05: https://bikoosh.com/races/st-jude-memphis-marathon
- California International Marathon 2026: sold out since 2026-10-25, race day 2026-12-06: https://bikoosh.com/races/california-international-marathon
- NAHA Marathon 2026 (40th): registration closed since 2026-10-27, race day 2026-12-06: https://bikoosh.com/races/naha-marathon
- PATAGONMAN Xtreme Triathlon 2026: unconfirmed since 2026-10-25, race day 2026-12-06: https://bikoosh.com/races/patagonman-xtreme-triathlon
- Valencia Marathon Trinidad Alfonso Zurich 2026: sold out since 2026-10-24, opens 2025-12-11, race day 2026-12-06: https://bikoosh.com/races/valencia-marathon
- BMW Dallas Marathon 2026: registration open since 2026-10-27, race day 2026-12-11: https://bikoosh.com/races/dallas-marathon
- ADNOC Abu Dhabi Marathon 2026: registration open since 2026-10-27, race day 2026-12-12: https://bikoosh.com/races/abu-dhabi-marathon
- Kiawah Island Golf Resort Marathon 2026: registration open since 2026-10-27, race day 2026-12-12: https://bikoosh.com/races/kiawah-island-marathon
- DSW Bruggenloop Rotterdam 2026: sold out since 2026-10-27, race day 2026-12-13: https://bikoosh.com/races/dsw-bruggenloop-rotterdam
- JAL Honolulu Marathon 2026: registration open since 2026-10-24, race day 2026-12-13: https://bikoosh.com/races/honolulu-marathon
- Muang Thai Chiang Mai Marathon 2026: registration open since 2026-10-27, race day 2026-12-20: https://bikoosh.com/races/chiang-mai-marathon
- Taipei Marathon 2026: ballot closed since 2026-10-27, race day 2026-12-20: https://bikoosh.com/races/taipei-marathon
- LIDL São Silvestre de Lisboa 2026: registration open since 2026-10-27, race day 2026-12-26: https://bikoosh.com/races/sao-silvestre-de-lisboa

Race Entry Watch is an independent, sourced tracker, not affiliated with any organiser. Every status is read on the event's own registration page on the date shown; dates and fees are quoted as the organiser states them; an entry is yours to make on the organiser's site.