Race catalog · version 2027.2
The dates a season is built backwards from.
A short, curated list of the events masters athletes in Europe actually plan a year around — not a directory of every start line. Every date here is read from the organiser and says how sure we are of it. Pick one in the app and the block sequence dates itself; if your race is not listed, type it in — the catalog is a convenience, never a constraint.
The organiser has published this exact date on their own site.
The organiser has announced a date but flagged it as subject to change, or it appears only in a press release or series announcement.
No official date yet. Inferred from where the event has sat in the calendar in previous years — the month is reliable, the day is not.
About version 2027.2, published 4 September 2026: Out-of-band version (RACE-001), same day as 2027.1, because a major date moved: HYROX Amsterdam is 22-31 January 2027, not the November 2026 the 2027.1 estimate placed it in. Adds 18 rows supplied by the owner on 2026-09-04 — the HYROX 2026/27 season in Germany, France and Benelux, and IRONMAN, 5150 and 70.3 events in the same regions: 16 recorded as provisional, each note naming the calendar it came from and the organiser page not yet read, and 2 month-only dates (Vichy, 70.3 Luxembourg) recorded as estimated. IRONMAN Hamburg 2027 moves from estimated to provisional, making 17 provisional rows in all. The 20 other 2027.1 rows carry forward unchanged and remain estimated. Every row must still be read at its source_url before 2027.3.
September 2026
- Sat, 5 Sept 2026Provisional
5150 Knokke-Heist
Supplied by the owner on 2026-09-04 from the IRONMAN race calendar (ironman.com/races); not yet read on the event's own page, which is the read that promotes it to confirmed. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Sat 12 – Sun, 13 Sept 2026Provisional
5150 Erkner
Supplied by the owner on 2026-09-04 from the IRONMAN race calendar (ironman.com/races); not yet read on the event's own page, which is the read that promotes it to confirmed. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Thu 17 – Sun, 20 Sept 2026Provisional
HYROX Maastricht
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyroxbenelux.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyroxbenelux.com on 4 September 2026
October 2026
- Thu 1 – Sun, 4 Oct 2026Provisional
HYROX Karlsruhe
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyrox.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyrox.com on 4 September 2026
- Thu, 29 Oct 2026Provisional
HYROX Nice
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyrox.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyrox.com on 4 September 2026
November 2026
- Thu 26 – Mon, 30 Nov 2026Provisional
HYROX Utrecht
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyroxbenelux.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyroxbenelux.com on 4 September 2026
December 2026
- Thu 17 – Sun, 20 Dec 2026Provisional
HYROX Gent
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyroxbenelux.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyroxbenelux.com on 4 September 2026
January 2027
- Sun, 10 Jan 2027Estimated
Egmond Halve Marathon
Estimated from the event's recurring position: second Sunday of January in 2024 (14 Jan), 2025 (12 Jan) and 2026 (11 Jan). Not read from the organiser's 2027 page in this pass.
Read at egmondhalvemarathon.nl on 4 September 2026
- Fri 22 – Sun, 31 Jan 2027Provisional
HYROX Amsterdam
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyroxbenelux.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration. Two race weekends at RAI Amsterdam, 22-24 and 27-31 January, recorded as one span. Supersedes the 2027.1 row that estimated November 2026.
Read at hyroxbenelux.com on 4 September 2026
February 2027
- Wed 3 – Sun, 7 Feb 2027Provisional
HYROX Toulouse
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyrox.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyrox.com on 4 September 2026
March 2027
- Wed 3 – Sun, 7 Mar 2027Provisional
HYROX Mechelen
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyroxbenelux.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyroxbenelux.com on 4 September 2026
- Sun, 14 Mar 2027Estimated
NN CPC Loop Den Haag (half marathon)
Estimated from the event's recurring position: second Sunday of March in 2024 (10 Mar), 2025 (9 Mar) and 2026 (8 Mar). Not read from the organiser's 2027 page in this pass.
Read at nncpcloopdenhaag.nl on 4 September 2026
April 2027
- Thu 1 – Sun, 4 Apr 2027Provisional
HYROX Rotterdam
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyroxbenelux.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyroxbenelux.com on 4 September 2026
- Thu 8 – Sun, 11 Apr 2027Provisional
HYROX Cologne
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyrox.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyrox.com on 4 September 2026
- Thu 8 – Mon, 12 Apr 2027Provisional
HYROX Paris Grand Palais
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyrox.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyrox.com on 4 September 2026
- Sun, 11 Apr 2027Estimated
NN Marathon Rotterdam
Estimated from the event's recurring position: second Sunday of April in 2024 (14 Apr), 2025 (13 Apr) and 2026 (12 Apr). Not read from the organiser's 2027 page in this pass.
Read at nnmarathonrotterdam.nl on 4 September 2026
- Sun, 11 Apr 2027Estimated
Schneider Electric Marathon de Paris
Estimated from the event's recurring position: a Sunday in the first half of April — 7 Apr 2024, 13 Apr 2025, 12 Apr 2026. The day is a placeholder; the month is the reliable part. Not read from the organiser's 2027 page in this pass.
Read at schneiderelectricparismarathon.com on 4 September 2026
- Sat, 17 Apr 2027Estimated
Amstel Gold Race Toerversie
Estimated from the event's recurring position: the Saturday before the professional race, which falls in mid-April — 19 Apr 2025, 18 Apr 2026. Not read from the organiser's 2027 page in this pass.
Read at amstelgoldrace.nl on 4 September 2026
- Sun, 25 Apr 2027Estimated
TCS London Marathon
Estimated from the event's recurring position: a Sunday in the second half of April — 21 Apr 2024, 27 Apr 2025, 26 Apr 2026. The day is a placeholder; the month is the reliable part. Not read from the organiser's 2027 page in this pass.
Read at tcslondonmarathon.com on 4 September 2026
May 2027
- Sun, 9 May 2027Estimated
Copenhagen Marathon
Estimated from the event's recurring position: a Sunday in the first half of May — 5 May 2024, 11 May 2025, 10 May 2026. Not read from the organiser's 2027 page in this pass.
Read at copenhagenmarathon.dk on 4 September 2026
- Wed 12 – Sun, 16 May 2027Provisional
HYROX Lyon
Supplied by the owner on 2026-09-04 from HYROX season listings found via aggregator calendars (fitnessrace.eu, roxradar); not yet read on hyrox.com, which is the page that promotes it to confirmed. Multi-day event weekend; the exact race-day slot is chosen at registration.
Read at hyrox.com on 4 September 2026
- Sun, 23 May 2027Provisional
5150 Kraichgau
Supplied by the owner on 2026-09-04 from the IRONMAN race calendar (ironman.com/races); not yet read on the event's own page, which is the read that promotes it to confirmed. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Sun, 23 May 2027Estimated
Leiden Marathon
Estimated from the event's recurring position: a Sunday in the second half of May — 25 May 2025, 24 May 2026. The day is a placeholder; the month is the reliable part. Not read from the organiser's 2027 page in this pass.
Read at leidenmarathon.nl on 4 September 2026
June 2027
- Sun, 6 Jun 2027Provisional
IRONMAN Hamburg
Supplied by the owner on 2026-09-04 from the IRONMAN race calendar (ironman.com/races), agreeing with the 2027.1 estimate (first Sunday of June in 2024-2026). Provisional until the event page itself is read; that read promotes it to confirmed. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Sun, 13 Jun 2027Estimated
IRONMAN 70.3 Luxembourg - Remich Région Moselle
Estimated: the owner reports the 2027 edition is slated for mid-June (the 2026 edition was 10-12 July). 13 June 2027 is the mid-June Sunday and is a placeholder; the month is the reliable part. Not read on ironman.com. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Sun, 27 Jun 2027Provisional
Mainova IRONMAN European Championship Frankfurt
Supplied by the owner on 2026-09-04 from the IRONMAN race calendar (ironman.com/races); not yet read on the event's own page, which is the read that promotes it to confirmed. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
July 2027
- Sun, 4 Jul 2027Estimated
Challenge Roth
Estimated from the event's recurring position: first Sunday of July in 2024 (7 Jul), 2025 (6 Jul) and 2026 (5 Jul). Not read from the organiser's 2027 page in this pass. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at challenge-family.com on 4 September 2026 · event page challenge-roth.com
August 2027
- Sun, 15 Aug 2027Estimated
IRONMAN Copenhagen
Estimated from the event's recurring position: third Sunday of August in 2024 (18 Aug), 2025 (17 Aug) and 2026 (16 Aug). Not read from the organiser's 2027 page in this pass. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Sun, 22 Aug 2027Estimated
IRONMAN Vichy
Estimated: the owner reports the race is expected to return in August 2027; the 2026 edition was Sunday 23 August. 22 August 2027 is the corresponding Sunday and is a placeholder; the month is the reliable part. Not read on ironman.com. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Fri 27 – Sun, 29 Aug 2027Estimated
UTMB Mont-Blanc (UTMB)
Estimated from the event's recurring position: UTMB week is the last week of August and the 171 km race starts on its Friday — 30 Aug 2024, 29 Aug 2025, 28 Aug 2026. Not read from the organiser's 2027 page in this pass.
Read at utmb.world on 4 September 2026 · event page montblanc.utmb.world
September 2027
- Mon, 6 Sept 2027Estimated
ÖTILLÖ Swimrun World Championship
Estimated from the event's recurring position: first Monday of September in 2024 (2 Sep), 2025 (1 Sep) and 2026 (7 Sep). Not read from the organiser's 2027 page in this pass. Multisport: primary_discipline is `other` until Open Question 1 rules how a swim-plus-run event is modelled.
Read at otilloswimrun.com on 4 September 2026
- Sat, 11 Sept 2027Estimated
Challenge Almere-Amsterdam
Estimated from the event's recurring position: second Saturday of September in 2024 (14 Sep), 2025 (13 Sep) and 2026 (12 Sep). Not read from the organiser's 2027 page in this pass. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at challenge-family.com on 4 September 2026 · event page challenge-almere.com
- Sun, 19 Sept 2027Estimated
Dam tot Damloop
Estimated from the event's recurring position: the Sunday of the third full weekend of September — 22 Sep 2024, 21 Sep 2025, 20 Sep 2026. Not read from the organiser's 2027 page in this pass.
Read at damloop.nl on 4 September 2026
- Sun, 26 Sept 2027Estimated
BMW BERLIN-MARATHON
Estimated from the event's recurring position: a Sunday in the second half of September — 29 Sep 2024, 21 Sep 2025, 27 Sep 2026. The day is a placeholder; the month is the reliable part. Not read from the organiser's 2027 page in this pass.
Read at bmw-berlin-marathon.com on 4 September 2026
October 2027
- Sun, 3 Oct 2027Estimated
IRONMAN Barcelona
Estimated from the event's recurring position: first Sunday of October in 2024 (6 Oct), 2025 (5 Oct) and 2026 (4 Oct). Not read from the organiser's 2027 page in this pass. Multisport: primary_discipline is `other` until Open Question 1 rules how a triathlon is modelled.
Read at ironman.com on 4 September 2026
- Sun, 10 Oct 2027Estimated
Marathon Eindhoven
Estimated from the event's recurring position: second Sunday of October in 2024 (13 Oct), 2025 (12 Oct) and 2026 (11 Oct). Not read from the organiser's 2027 page in this pass.
Read at marathoneindhoven.nl on 4 September 2026
- Sun, 17 Oct 2027Estimated
TCS Amsterdam Marathon
Estimated from the event's recurring position: third Sunday of October in 2024 (20 Oct), 2025 (19 Oct) and 2026 (18 Oct). Not read from the organiser's 2027 page in this pass.
Read at tcsamsterdammarathon.nl on 4 September 2026
November 2027
- Sun, 21 Nov 2027Estimated
Zevenheuvelenloop
Estimated from the event's recurring position: third Sunday of November in 2024 (17 Nov), 2025 (16 Nov) and 2026 (15 Nov). Not read from the organiser's 2027 page in this pass.
Read at zevenheuvelenloop.nl on 4 September 2026
December 2027
- Sun, 5 Dec 2027Estimated
Maratón Valencia Trinidad Alfonso
Estimated from the event's recurring position: first Sunday of December in 2024 (1 Dec), 2025 (7 Dec) and 2026 (6 Dec). Not read from the organiser's 2027 page in this pass.
Read at valenciaciudaddelrunning.com on 4 September 2026
Where these dates come from
Every row is read from the organiser's own site or its official series calendar, and the page it was read from is linked beside the date. Nothing here is copied from a race-listing aggregator. A date that the organiser has not published is labelled estimated or provisional, in this list and again in the app, so a plan built on it says so next to that goal.
A published version is never edited. A corrected date ships as a new version, so a plan that recorded which version it was built from keeps pointing at what it saw. Domains this version reads from: hyrox.com, hyroxbenelux.com, ironman.com, challenge-family.com, challenge-roth.com, challenge-almere.com, nnmarathonrotterdam.nl, tcsamsterdammarathon.nl, bmw-berlin-marathon.com, tcslondonmarathon.com, schneiderelectricparismarathon.com, valenciaciudaddelrunning.com, copenhagenmarathon.dk, marathoneindhoven.nl, nncpcloopdenhaag.nl, damloop.nl, zevenheuvelenloop.nl, egmondhalvemarathon.nl, leidenmarathon.nl, utmb.world, otilloswimrun.com, amstelgoldrace.nl.