Bring your trail running shoes and your mountain bike, then run, ride, run! This woodland duathlon is back with a bang after a few years away – a ‘must do’ event for multi sport winter trails lovers.
As well as the full distance race we offer a Youth and HalfX event so if you’re at least 14 years old on race day and have sense for adventure come join us, regardless of your experience!
Full distance participants will complete a scenic 3.5km trail running route, three laps of a 4.7km cross country mountain bike course and finish with another crack at the run. If you’re joining us for the HalfX or the Youth race, there’s a 2.8km trail running route that you will complete for both your first and second runs and two mountain bike laps.
which event is for you?
FullX Solo Duathlon
Ages 18 and overPrice valid until 15 Jan 2026. Price thereafter: £65.
FullX Solo Duathlon
Age 16 – 17 onlyPrice valid until 15 Jan 2026. Price thereafter: £35.
FullX Relay Duathlon
Age 16 years and overPrice valid until 15 Jan 2026. Price thereafter: £100.
HalfX Duathlon
Ages 18 and overPrice valid until 15 Jan 2026. Price thereafter: £40.
HalfX Duathlon
Age 14 – 17 onlyPrice valid until 15 Jan 2026. Price thereafter: £20.
Race series bundle deal
Enter both the TrailX Duathlon New Forest event and the TrailX Duathlon Matterley race at the same time you will save 20% off the price, valid at the time of registration. Click Enter Now to apply the discount.
Early Bird prices available until 15 Jan 2026
Start time for all categories is 11:00. Entry on the day is only available if there is space so please contact us to check before arriving. If available, it will be at £15.00 more than the standard prices above. All entries will be subject to a 3% admin fee.
The Countdown Begins!
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The course
The courses for both trail running and mountain biking are entirely off road and contained within the private Gaddens Farm estate.
The trail run
Starts on an open grassy track, followed by a blast along a gravel road with plenty of space for competitors to spread out before diving into the woodland. Once into the woods you’ll find twists, turns, ups and downs that come thick and fast. Theres also plenty of gravel roads and paths for a chance to recover or stretch your legs.
The mountain bike course
The bike course follows the same theme of woodland singletrack, whilst including plenty of open forest roads for a breather and allowing for safe overtaking.
While we’re talking about bikes. You can ride any pedal powered off-bike (e-bikes are not permitted), including Gravel or Cyclocross bikes but you will only be eligible for British Triathlon National Age Group Team selection if you ride a mountain bike. The course can be rough in sections so a mountain bike will be a lot more fun – and faster too, so if you have one available. For more information check out the FAQs and Rules below.
What is included in your entry?
- Great atmosphere with friendly and enthusiastic crew and marshals.
- Purpose built course within private venue.
- Clear course marking to give you the best race experience.
- Chip timing with split times.
- Live results.
FAQs and rules
We’ve compiled a list of things that we’re asked most often. If your query isn’t answered below then just drop us an email: [email protected]
What is an Off Road Duathlon?
Our Off-road Duathlon consists of three elements spread over two disciplines. First up is a trail run following a marked route. Second is a mountain bike ride, during which you will follow a marked route that may well be ridden a number of times to complete the full distance and the third element is another trail run, usually done over the same route as the first one. Both trail running and mountain biking routes will be on mixed terrain including woodland trails, single track, open paths and gravel roads. The routes may be technical in areas and will involve hill climbing and descending. The distances of all three elements will be advised on the event page.
Can I have a go?
What kit/equipment do I need?
All of the TrailX events are off road so you will need grippy running shoes (ideally trail shoes), and a mountain bike. You can ride any pedal powered off-bike (e-bikes are not permitted), including Gravel or Cyclocross bikes but you will only be eligible for British Triathlon National Age Group Team selection if you ride a mountain bike. The course can be rough in sections so a mountain bike will be a lot more fun – and faster too, so if you have one available. For more information check out the FAQs and Rules below. As for what you wear, it’s up to you – just needs to be something that you can comfortably run and ride in.
Can I practice before I race?
How will the start of the race work?
This is a mass start race meaning that all competitors in the full distance event will start together and competitors from the half distance event will start five minutes later.
What do I do if I can’t finish my race?
Registration & Transition
Registration will open from the time confirmed in your pre race email and will close 15 minutes before the start of your race.
The mountain bike course will be open for practice for at least 1hr30 before your race, please allow 20-30 minutes for a lap. Your bike must be in transition by at least 20 minutes before your race is scheduled to start (see event details) and you must have signed on at registration before racking your bike.
Only your bike, helmet, and cycling shoes (if applicable) can be placed in transition.
Race briefing
The race director will carry out a briefing at the transition area 15 minutes before the start of each race and will walk to the start line with you, during this time please ask any questions that you have.
It is compulsory that you attend the briefing.
Can I cancel my entry?
Please see our Cancellation Policy here.