Compiled and fact-checked by Tommo, Verus founder · Last verified August 2026 · Spot an error?
Running · Ultra Marathons
Brecon to Cardiff Ultra 2027
- Race day
- Sunday, 14 February 2027
- Location
- Brecon to Nantgarw, near Cardiff, UK
- Distance
- 43 mi / 69.2 km
Brecon to Cardiff Ultra: 14 February 2027, from Brecon, Bannau Brycheiniog. Entry, route, a pace chart and the race-day forecast.
Brecon to Cardiff Ultra Race Timeline
157 days to go
More than 126 days out — a good window to build a consistent base before ultra-specific training ramps up.
Brecon to Cardiff Ultra 2027: quick answers
When is Brecon to Cardiff Ultra 2027?
Brecon to Cardiff Ultra 2027 takes place on Sunday, 14 February 2027.
Where does Brecon to Cardiff Ultra start and finish?
Brecon to Cardiff Ultra starts at Brecon, Bannau Brycheiniog and finishes at Nantgarw, just north of Cardiff.
How many miles is Brecon to Cardiff Ultra?
Brecon to Cardiff Ultra is 43 miles (69.2km).
How much does Brecon to Cardiff Ultra cost to enter?
Entry through Eventrac — check the official site for current pricing.
Key Race Metrics & Overview
- Date
- Sunday, 14 February 2027
- Distance
- 43 miles / 69.2km
- Location
- Brecon to Nantgarw, near Cardiff, UK
- Start Point
- Brecon, Bannau Brycheiniog
- Finish Point
- Nantgarw, just north of Cardiff
- Surface
- The Taff Trail — old railway line, canal towpath, riverside path and forest track. Largely downhill.
Not published by the organiser at the time of writing: start time, cut-off time, age requirement, tracking app. Verus records these as unconfirmed rather than estimating them — check the official race website closer to race day.
Direct Entry Summary
Entry through Eventrac — check the official site for current pricing.
Ballot Policy
No ballot — entry is direct through Run Walk Crawl.
Brecon to Cardiff Ultra Race Day Weather
A real forecast appears here once one exists for race day — usually about a week to ten days out. Nothing is shown until then, because a made-up forecast is worse than none.
Brecon to Cardiff Ultra Route Map & Elevation Profile
Starting at Brecon, Bannau Brycheiniog and finishing at Nantgarw, just north of Cardiff. Total elevation gain is not published for this event, and Verus does not estimate one.
Is Brecon to Cardiff Ultra flat?
No official elevation figure is published for this course, so Verus doesn't state one. The organiser describes the going as: the taff trail — old railway line, canal towpath, riverside path and forest track. largely downhill..
Brecon to Cardiff Ultra Course Profile
Elevation change not published for this event.
Tap a point on the course for details.
Brecon, Bannau Brycheiniog
Start line.
Where Brecon to Cardiff Ultra starts and finishes
Brecon to Cardiff Ultra starts at Brecon, Bannau Brycheiniog and finishes at Nantgarw, just north of Cardiff. We haven't been able to place those on a map accurately enough to show one — a pin in the wrong place is worse than no pin.
These are the start and finish points, not the route. Verus doesn't hold course files for this race, and drawing a line between two pins would be a guess you might end up training on.
Full Brecon to Cardiff Ultra Route Breakdown
A fully marked 43-mile point-to-point following the Taff Trail south along the river from the heart of Bannau Brycheiniog to Nantgarw on the edge of Cardiff. Net downhill for its whole length, on a mixture of old railway line, canal towpath and riverside path.
Brecon to Cardiff Ultra Pace Calculator & Splits
Brecon to Cardiff Ultra Pace Calculator
Enter a target finish time to see your pace and projected splits.
Average pace / mile
5:35
Average pace / km
3:28
Brecon to Cardiff Ultra Pace Chart
Split markers calculated for standard checkpoints — no official pacers are confirmed for this event.
| Target | Pace /mi | Pace /km | 5K | 10K | Half Marathon | 30K | Finish |
|---|---|---|---|---|---|---|---|
| 3:00 | 4:11 | 2:36 | 13:00 | 26:01 | 54:53 | 1:18:02 | 3:00:00 |
| 3:15 | 4:32 | 2:49 | 14:05 | 28:11 | 59:27 | 1:24:32 | 3:15:00 |
| 3:30 | 4:53 | 3:02 | 15:10 | 30:21 | 1:04:01 | 1:31:02 | 3:30:00 |
| 3:45 | 5:14 | 3:15 | 16:15 | 32:31 | 1:08:36 | 1:37:32 | 3:45:00 |
| 4:00 | 5:35 | 3:28 | 17:20 | 34:41 | 1:13:10 | 1:44:03 | 4:00:00 |
| 4:15 | 5:56 | 3:41 | 18:25 | 36:51 | 1:17:45 | 1:50:33 | 4:15:00 |
| 4:30 | 6:17 | 3:54 | 19:30 | 39:01 | 1:22:19 | 1:57:03 | 4:30:00 |
| 4:45 | 6:38 | 4:07 | 20:36 | 41:11 | 1:26:53 | 2:03:33 | 4:45:00 |
| 5:00 | 6:59 | 4:20 | 21:41 | 43:21 | 1:31:28 | 2:10:03 | 5:00:00 |
| 5:30 | 7:40 | 4:46 | 23:51 | 47:41 | 1:40:36 | 2:23:04 | 5:30:00 |
| 6:00 | 8:22 | 5:12 | 26:01 | 52:01 | 1:49:45 | 2:36:04 | 6:00:00 |
| 6:30 | 9:04 | 5:38 | 28:11 | 56:21 | 1:58:54 | 2:49:04 | 6:30:00 |
| 7:00 | 9:46 | 6:04 | 30:21 | 1:00:42 | 2:08:03 | 3:02:05 | 7:00:00 |
Brecon to Cardiff Ultra Finish Time Estimator
Enter a recent 5K, 10K or Half Marathon time to estimate your Brecon to Cardiff Ultra finish time.
Your 5K time
Estimated Brecon to Cardiff Ultra finish
6:45:06
An estimate only, based on Pete Riegel's race-time prediction formula. Real marathon performance depends on endurance, training specificity, pacing and race-day conditions — not just your speed over a shorter distance.
Training for a different distance? Try the full pace calculator, race time predictor or pace chart.
Got your target time? Save it to your profile.
Tag Brecon to Cardiff Ultra, set your goal pace, and let Verus track your countdown, training and fundraising in one place.
Start Your Verus JourneyBrecon to Cardiff Ultra Race Day Checklist
Tap items to mark off your race-day readiness.
- Race number attached, and any timing chip fitted per your race pack instructions
- Weather-appropriate kit, plus something warm and disposable to discard before the start
- A plan for reaching Brecon, Bannau Brycheiniog
- A meeting point agreed with family and friends for after the race
Training Strategy for Brecon to Cardiff Ultra
20-24 weeks is the realistic window for a first 43-mile ultra, assuming you already have a marathon's worth of base behind you. The block that matters is back-to-back long weekends — a long run on Saturday followed by a second, slower one on Sunday — which builds time on feet and teaches you to run on tired legs without the recovery cost of one enormous day. Practise your race-day nutrition on every one of them; at this distance the stomach fails before the legs do.
This is a largely flat course, so most of your long runs can mirror that — flat and steady, building time on feet rather than hill strength.
Drop volume hard across the final three to four weeks — further out and steeper than a marathon taper, because a 30-mile training day costs weeks of recovery, not days. Keep some easy running and a little terrain-specific work in, but the goal is to reach Brecon, Bannau Brycheiniog with fresh feet and a rested gut rather than one more long run in the bank.
Lock in your target pace using the interactive splits calculator below — no official pacers are confirmed for this event, so a pace band on your watch is the more reliable option.
Test your race-day fuel and hydration plan on your long training runs, not for the first time on race day — check the Race Day Checklist below for what's actually on this course.
43-Mile Ultra Nutrition & Fueling Plan
A deliberate increase in carbohydrate over the two to three days before the race is the well-established approach at marathon distance.
Eat a carbohydrate-focused breakfast two to three hours before the start, and stick to something you've already tested in training rather than trying anything new.
Most runners take on carbohydrate every 30 to 45 minutes from about an hour in, alongside fluid at the on-course stations.
A mix of carbohydrate and protein in the hour or so after finishing supports recovery.
Brecon to Cardiff Ultra Charity Places 2027
No formal charity-place scheme published — runners commonly fundraise for a charity of their own choosing.
Lead with your personal story — explain why the charity matters to you. Personal connection generates 3x more support than a generic link broadcast.
Share key training milestones on Instagram (first 10-miler, peak week, race week) with your fundraising link in bio. Publicly thanking donors prompts secondary gifts!
Running Brecon to Cardiff Ultra for charity?
Link your JustGiving page to Verus and show up right here alongside other Brecon to Cardiff Ultra fundraisers — goal, progress and story, all in one place.
Add Your Fundraiser to VerusTravel & Logistics
No road closures — the Brecon to Cardiff Ultra is run off-road (The Taff Trail — old railway line, canal towpath, riverside path and forest track. Largely downhill.), so local traffic is unaffected.
Brecon to Cardiff Ultra Frequently Asked Questions
Everything you need to know for race weekend.
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Race details independently compiled and fact-checked by Tommo against the official Brecon to Cardiff Ultra site , last verified August 2026. Always confirm official timings and policies directly prior to race day.