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

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Triathlons
Castle to Coast Triathlon

Castle to Coast Triathlon

Windsor to Brighton · Independent

Data current as of 2026-06-24

At a glance

SwimLake
SettingMixed
StartDorney Lake, Windsor

point-to-point course
lake swim
sportive-style ethos
relaxed cut-offs

View course map / route ↗

Distances offered (1)

Middle (70.3)

1,931 m swim · 107 km bike · 22.5 km run

Entry fee not published

Bike climb1,006 m
CoursePoint to point
SurfaceMixed
Run terrain90% trail, 10% road; challenging trail run across the South Downs
SwimLake
Aid stationsaid stations, toilets and mechanical support provided
TransitionsT1 at Eton Dorney rowing centre, T2 at Hassocks Sports Centre

Common questions

What triathlon formats does Castle to Coast Triathlon offer?

Castle to Coast Triathlon currently lists Middle (70.3) (1,931 m swim · 107 km bike · 22.5 km run) on raceindex.org.

How much bike climbing is there at Castle to Coast Triathlon?

Recorded bike climbing by format: Middle (70.3): 1,006 m bike climbing.

Where can I verify Castle to Coast 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.

Sources used on this page (1)

Layer A castletocoasttri.com · fetched 2026-06-24

Read the full methodology →

Castle to Coast Triathlon — course, terrain & details · raceindex.org