Marathon calendar Belgium 2026
9 upcoming marathon dates in Belgium for 2026 — full marathon calendar on Run Atlas.
Looking for a marathon calendar in Belgium for 2026? Run Atlas lists 9 upcoming 42 km races — city majors and regional road marathons with dates you can compare in one place.
Whether you are chasing a personal best or your first finish line, checking marathon dates early helps you secure a start slot and build training around the right peak.
Browse the marathon calendar below month by month. April 2027 is a busy stretch in our listings when several races cluster on weekends.
Rain or shine — plan your race day
Marathon calendar for Belgium
All upcoming 42 km marathon dates in Belgium, grouped by month.
December 2026
April 2027
Many runners pick a flagship race in the capital. Brussels often hosts the most iconic marathon in Belgium, while smaller towns offer quieter fields and fast, flat courses.
Once you choose a date, check registration windows — popular spring and autumn weekends fill up months ahead.
World Marathon Majors linked to Belgium are highlighted separately — bookmark favourites on Run Atlas and set a RaceAlert when registration opens.
