Compiled and fact-checked by Tommo, Verus founder · Last verified August 2026 · Spot an error?
Running · Ultra Marathons
The RIDUM 2026
- Race day
- Saturday, 5 September 2026
- Location
- Llanbradach, Caerphilly, UK
- Distance
- 30 mi / 48.3 km
The RIDUM: 5 September 2026, 30 miles, from Llanbradach, Caerphilly. Route, distance and where to check results.
The RIDUM Race Timeline
5 days since race day
The RIDUM runs most years, but the next date hasn't been announced. Ask to be notified above and we'll email you the day it is.
The RIDUM: quick answers
When is the next The RIDUM?
The next date hasn't been published by the organiser yet. The most recent The RIDUM was Saturday, 5 September 2026, and the race has usually run around the same point in the year.
Where does The RIDUM start?
The RIDUM starts at Llanbradach, Caerphilly. The organiser hasn't published a finish location.
How many miles is The RIDUM?
The RIDUM is 30 miles (48.3km).
How much does The RIDUM cost to enter?
Entry direct through Pegasus Ultra Running — check the official site for current pricing.
Key Race Metrics & Overview
- Date
- Saturday, 5 September 2026
- Distance
- 30 miles / 48.3km
- Location
- Llanbradach, Caerphilly, UK
- Start Point
- Llanbradach, Caerphilly
- Surface
- The Rhymney Valley Ridgeway Walk — ridge path, forest track and steep valley sides
Not published by the organiser at the time of writing: finish point, 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 direct through Pegasus Ultra Running — check the official site for current pricing.
Ballot Policy
No ballot — entry is direct through Pegasus Ultra Running.
The RIDUM 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.
The RIDUM Route Map & Elevation Profile
Starting at Llanbradach, Caerphilly. The organiser hasn't published a finish location. Total elevation gain is not published for this event, and Verus does not estimate one.
Is The RIDUM flat?
No official elevation figure is published for this course, so Verus doesn't state one. The organiser describes the going as: the rhymney valley ridgeway walk — ridge path, forest track and steep valley sides.
The RIDUM Course Profile
Elevation change not published for this event.
Tap a point on the course for details.
Llanbradach, Caerphilly
Start line.
Where The RIDUM starts and finishes
The RIDUM starts at Llanbradach, Caerphilly. 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 The RIDUM Route Breakdown
A 30-mile ultra following the Rhymney Valley Ridgeway Walk in south-east Wales, a route that rings the valley on the high ground either side. The name is short for Rhymney Valley Ridgeway Ultra Marathon.
The RIDUM Pace Calculator & Splits
The RIDUM Pace Calculator
Enter a target finish time to see your pace and projected splits.
Average pace / mile
8:00
Average pace / km
4:58
The RIDUM 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 | 6:00 | 3:44 | 18:38 | 37:17 | 1:18:39 | 1:51:51 | 3:00:00 |
| 3:15 | 6:30 | 4:02 | 20:12 | 40:23 | 1:25:13 | 2:01:10 | 3:15:00 |
| 3:30 | 7:00 | 4:21 | 21:45 | 43:30 | 1:31:46 | 2:10:29 | 3:30:00 |
| 3:45 | 7:30 | 4:40 | 23:18 | 46:36 | 1:38:19 | 2:19:49 | 3:45:00 |
| 4:00 | 8:00 | 4:58 | 24:51 | 49:43 | 1:44:53 | 2:29:08 | 4:00:00 |
| 4:15 | 8:30 | 5:17 | 26:25 | 52:49 | 1:51:26 | 2:38:27 | 4:15:00 |
| 4:30 | 9:00 | 5:36 | 27:58 | 55:55 | 1:57:59 | 2:47:46 | 4:30:00 |
| 4:45 | 9:30 | 5:54 | 29:31 | 59:02 | 2:04:32 | 2:57:05 | 4:45:00 |
| 5:00 | 10:00 | 6:13 | 31:04 | 1:02:08 | 2:11:06 | 3:06:25 | 5:00:00 |
| 5:30 | 11:00 | 6:50 | 34:11 | 1:08:21 | 2:24:12 | 3:25:03 | 5:30:00 |
| 6:00 | 12:00 | 7:27 | 37:17 | 1:14:34 | 2:37:19 | 3:43:42 | 6:00:00 |
| 6:30 | 13:00 | 8:05 | 40:23 | 1:20:47 | 2:50:25 | 4:02:20 | 6:30:00 |
| 7:00 | 14:00 | 8:42 | 43:30 | 1:27:00 | 3:03:32 | 4:20:59 | 7:00:00 |
The RIDUM Finish Time Estimator
Enter a recent 5K, 10K or Half Marathon time to estimate your The RIDUM finish time.
Your 5K time
Estimated The RIDUM finish
4:36:35
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 The RIDUM, set your goal pace, and let Verus track your countdown, training and fundraising in one place.
Start Your Verus JourneyThe RIDUM 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 Llanbradach, Caerphilly
- A meeting point agreed with family and friends for after the race
Training Strategy for The RIDUM
20-24 weeks is the realistic window for a first 30-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 Llanbradach, Caerphilly 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.
30-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.
The RIDUM Charity Places 2026
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 The RIDUM for charity?
Link your JustGiving page to Verus and show up right here alongside other The RIDUM fundraisers — goal, progress and story, all in one place.
Add Your Fundraiser to VerusTravel & Logistics
No road closures — the The RIDUM is run off-road (The Rhymney Valley Ridgeway Walk — ridge path, forest track and steep valley sides), so local traffic is unaffected.
The RIDUM Frequently Asked Questions
Everything you need to know for race weekend.
People Also Search For
Similar races
Thames Path Challenge
Fulham, London to Henley-on-Thames
Highland Fling Race
Milngavie to Tyndrum, Scotland
Cotswold Way Century
Chipping Campden to Bath, Gloucestershire, UK
Chiltern Wonderland 50
Goring-on-Thames, Oxfordshire
Autumn 100
Goring-on-Thames, Oxfordshire
Wendover Woods 50
Aston Hill, Halton, Aylesbury, Buckinghamshire
Race details independently compiled and fact-checked by Tommo against the official The RIDUM site , last verified August 2026. Always confirm official timings and policies directly prior to race day.