date confirmedUltra X

Ultra X I Feel Slovenia 110K

Ultra X 110

Next edition: Saturday, 5 September 2026 – Sunday, 6 September 2026Ajdovščina, Slovenia

A technical two-day trail ultra in western Slovenia, crossing the ridges, forests and limestone terrain surrounding the Vipava Valley.

Official race site

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

Distance68.4 mi

Ascent4,356m

Climb / km39.6m

Stage cutoff16h · 60km

Stage pace16:00/km

Technicality8/10

EntryNot verified

Formatmulti-stage

Next edition

5 September 2026 – 6 September 2026

This is the most relevant confirmed edition currently held for the permanent race family. Edition-specific facts should still be checked against the final organiser instructions.

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

5.6/ 10

Hard

Moderate evidence confidence · 78% evidence coverage

This score is driven most by high climbing demand, technical terrain. 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

Distance5.3 out of 10

Climbing6.2 out of 10

Technicality8 out of 10

Accumulated burden4.3 out of 10

Exposure & support3.9 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.

trailmountainforesttechnical

39.6m per km

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

Cutoff analysis

Moderate pressure

Cutoff Pressure V2 is governed by the tightest published active-time stage: Stage 1, with 16h for 60km. Its course-adjusted allowance is 10.22 minutes per effort-kilometre.

16:00/km

Moderate pressure

The governing stage pace includes stops made during that stage. Between-stage recovery and sleep are excluded from active running allowance, so a broad multi-day event window cannot hide a tighter stage.

Who this suits

First ultra?

Better suited to runners with prior ultra, mountain or technical-terrain experience than to somebody choosing their first ultra.

3/10 suitability

Navigation

fully marked

The route is described as marked, but runners should still read the final race instructions.

Exposure & kit

unknown kit

Some entrants may run into darkness depending on pace and start time. Prepare lighting even if your best-case plan finishes earlier.

Personal race predictor

Will you make the cutoff?

Use a previous result to estimate a realistic range for Ultra X I Feel Slovenia 110K, your potential buffer and the biggest change in demand.

Run my estimate

Practical detail

Support & logistics

Support levelfully supported

LogisticsCamping available

LogisticsAccommodation nearby

LogisticsBag drop

UTMB100K

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 current official event page and its late linked race pack verify the 5–6 September dates, 110K total distance, revised stage facts and 16-hour plus 13.5-hour stage windows. The current pack's 4,356m event total conflicts with its 4,454m stage sum; its superseded April pack instead published 111K and 4,236m, so those changes and both ascent alternatives remain explicit. The organiser-linked Race Space booking controls now mark every entry closed, which is used over the event page's stale Enter Now control and Race Space's contradictory InStock structured data.

Successful source check: 4 Sept 2026
Catalogue record updated: 4 Sept 2026
Official source: Available

Still unverified: entry price.

Official source 1 Official source 2 Official source 3 Official source 4

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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