Date
Sat, 28 Nov 2026
Start
08:00
Venue
Machen Welfare Ground, Tyn-y-Waun Road, Machen, CF83 8LA
Machen, Caerphilly
Countdown
November
The full marathon distance on trail, 41.8 km in one loop with an early 8am start. You find your own way, with marshals only at the critical junctions.
Key facts
01Kit check at registration: no kit, no entry
028-hour overall limit plus checkpoint cut-offs
03Self-navigation, marshals only at critical junctions
Create a free training plan for the Machen Trail Races 42 km
7-day free trial, no card required
The course
The route
Machen
Distance42km
StartElevation
0 kmDrag map to rotate41.3 km
Weather
Late-November, Machen
9°CTypical high
4°CTypical low
-4°CColdest in 20 years
54%Days with rain
Highs around 9°C and lows around 4°C, but it has dropped to -4°C. Rain on 54% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Machen Trail Races 42 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Machen Trail Races 42 km plan targets
Typical sessions
42 km
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Machen Trail Races 42 km plan.
7-day free trial, no card required.
More events in November in United Kingdom
Anglesey Trail Half MarathonExpected Early November 2026 · Niwbwrch→Cornish MarathonSun, 1 Nov 2026 · Millennium Centre→The TFG Cheese & Crackers Trail RacesSun, 1 Nov 2026 · Hartington→Wendover Woods Marathon, Half Marathon & 10kSun, 1 Nov 2026 · Aylesbury→Rutland Night10kFri, 6 Nov 2026 · Edith Weston→Allithwaite 8Sat, 7 Nov 2026 · Allithwaite→
