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

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Grafman Triathlon

Grafman Triathlon

Grafham, Huntingdon, Cambridgeshire · JUN 2026 · Independent

Data current as of 2026-06-24

At a glance

SwimReservoir
WetsuitWetsuits permitted; hire available via Zone3
SettingRural
StartGrafham Water Visitor Centre, Marlow Park
ParkingOn-site parking with payment machines

Run with views of the Valve Tower
Voted National Event of the Year
Open water swim with Aussie-style exit halfway

Typical race-day conditions

Around race day in Grafham, Huntingdon, Cambridgeshire: 15°C typical, 1.9 mm rain, 21 km/h wind. (10-year Open-Meteo average.)

Distances offered (1)

Middle (70.3)

1,900 m swim · 90 km bike · 21 km run

Entry fee not published · non-drafting

SwimReservoir
Cut-off9 hours 30 minutes overall
Aid stationsWater and nutrition stations throughout the course

View course map / route ↗

Common questions

What triathlon formats does Grafman Triathlon offer?

Grafman Triathlon currently lists Middle (70.3) (1,900 m swim · 90 km bike · 21 km run) on raceindex.org.

Where can I verify Grafman 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 atwevents.co.uk · fetched 2026-06-24

Read the full methodology →

Grafman Triathlon — course, terrain & details · raceindex.org