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© 2026 raceindex.org. Derived figures use a published methodology; modelled costs are labelled.

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The All Nations Triathlon

The All Nations Triathlon

Dorney · MAY 2026 · Independent

Data current as of 2026-06-24

At a glance

SwimLake
SettingRural
StartDorney Lake, Windsor, Berkshire

Typical race-day conditions

Around race day in Dorney: 12°C typical, 2 mm rain, 20 km/h wind. (10-year Open-Meteo average.)

Distances offered (1)

Super-sprint

400 m swim · 20 km bike · 5 km run

Entry fee not published

SwimLake

Common questions

What triathlon formats does The All Nations Triathlon offer?

The All Nations Triathlon currently lists Super-sprint (400 m swim · 20 km bike · 5 km run) on raceindex.org.

Where can I verify The All Nations Triathlon details?

Use the linked official event website alongside the raceindex.org provenance and methodology notes shown on this page.

Official event website ↗

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of 2026-06-24.

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (2)

Layer E archive-api.open-meteo.com
Layer A thefixevents.com · fetched 2026-06-24

Read the full methodology →

The All Nations Triathlon — course, terrain & details · raceindex.org