last completed editionWeSwimRun

Dyfi Ultra

Last completed: Saturday, 5 June 2021Aberdyfi, Wales

A historic 50-mile mountain loop from Aberdyfi into the Dyfi and Cadair Idris landscape; the organiser is developing a new route but has announced no new edition.

Official race site

Optional device-only history; never synced to your account. Shared-device users can leave it off.

Distance50 mi

Ascent3,800m

Climb / km47.2m

CutoffUnknown

Cutoff paceUnknown

TechnicalityUnknown

EntryNot verified

FormatLooped

Last completed edition

5 June 2021

Next edition not yet announced

The organiser has not yet published a confirmed future edition in our sources. The facts below describe the 2021 running and are retained for comparison and runner history.

Edition archive

This is the only edition currently stored for this race family. Earlier verified editions can be added without changing the permanent race URL.

Check the official race source

Race For You difficulty

4.8/ 10

Moderate

Limited evidence confidence · 47% evidence coverage

This score is driven most by high climbing demand. Difficulty V2's separate time-limit modifier adds 0.00 points here and is capped at 0.70; a broad limit cannot erase extreme intrinsic demand. This is independent of the public Cutoff Pressure V2 band.

Weather, conditions and individual preparation can change the real difficulty significantly.

How the score works

Distance4 out of 10

Climbing6.2 out of 10

Technicality5.5 out of 10

Accumulated burden2.7 out of 10

Exposure & support5.9 out of 10

Course analysis

What shapes this race

Expect sustained upland ground and meaningful climbing, sections where foot placement and downhill confidence matter, forest trail that may change character in wet conditions.

trailmountainforestmixedtechnical

47.2m per km

A more useful comparison than total ascent alone: it shows how consistently the course asks you to climb.

Cutoff analysis

Unknown

The official overall cutoff has not yet been verified. Race For You will not estimate one.

Who this suits

First ultra?

There is not enough verified information to assess first-ultra suitability yet.

Navigation

self-navigation

Route-finding is part of the challenge. Carry the required mapping tools and be able to use them in darkness and poor visibility.

Exposure & kit

unknown kit

Night-running exposure has not been verified for this edition. Check the organiser’s latest schedule, route information and final kit rules.

Personal race predictor

Prediction unavailable

No current compatible predictor target is available for this family. The selected edition may be complete or cancelled, awaiting a successor, non-standard, or missing model-critical course evidence; older facts are not substituted.

Practical detail

Support & logistics

Aid stations6 listed

Support levelaid stations

Logistics are only shown where currently recorded. Confirm parking, transport, crew access and final aid-station plans with the organiser.

Latest verification

Trust the source, see the gaps.

Data Partial

The official page links the 2021 tracker/results and preserves the 50-mile, 3,800m, self-navigation and six-checkpoint route; DUV corroborates the exact 5 June date. The checkpoint-three eight-hour control is intermediate, so overall cutoff remains null. A 2022 listing without durable outcome proof is not promoted to an edition.

Successful source check: 3 Sept 2026
Catalogue record updated: 3 Sept 2026
Official source: Available

Still unverified: cutoff, entry price.

Official source 1 Official source 2 Official source 3

Event details can change after a successful source check. Confirm the final route, kit, cutoff, price and entry terms directly with the organiser before entering or travelling.

Found something wrong?

Help keep this race accurate.

Wrong cutoff? Date changed? New course? Tell us what moved and include the official source if you have it.

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