Actif Tywi Valley Half Marathon 2026

The start and finish line will be in the same location, outside the grounds of Ysgol Bro Dinefwr in Ffairfach, SA19 6PE

The race begins with the first wave at 9:00am. Runners start times will be staggered into several waves, eight in total.

Our preference is that all runners collect their race bib before the day where possible. 

Race collection will be available at the following location during the week of the race:

Wednesday 12 August: Canolfan Pentre Awel, Llanelli (12:00-18:00)

Thursday 13 August: Amman Valley Leisure Centre (12:00-18:00)

Friday 14 August: Carmarthen Leisure Centre (12:00-18:00)

If you are unable to attend one of the collection events, bibs can be collected from the Event Village on race morning between 07:00am and 08:00am.

Please bring your confirmation email when collecting your number.

Yes, a friend or family member will be able to collect a number on someone else's behalf, however please note that you will need to bring a confirmation email when collecting the number.

Unfortunately, entries cannot be transferred to another participant. However, if you're unable to attend, you can defer your entry to next year's event.

To arrange a deferral, please email Lauren Tynan at LTynan@carmarthenshire.gov.uk

Your allocated wave colour will be on your race bib.

Runners should enter the pen matching their colour and expected finish time. Starting with runners of similar pace helps improve safety and gives everybody a better race experience.

Road closures will be implemented on parts of the race route from 9:00am to 12:00pm. Signed diversion routes will be in place throughout this period

Road closures will be implemented after the race begins in parts of:

• Cilsan Bridge (Gelli Aur College)
• Dryslwyn
• Llanarthne

There will be no road closures on the main road outside Ysgol Bro Dinefwr area.

Parking around the event is limited.

Please consider car-sharing where possible. Available parking locations include:

Ysgol Bro Dinefwr

Please note that if you park at this location, you will not be able to leave the car park until the final runner has crossed the finish line, which is expected to be around 1:00pm.

Tregib Sports Facilities

Please expect some congestion, as both entry and exit use the same access point. However, you are free to leave at any time. Approximately 100-120 parking spaces are available.

Llandeilo Mart

You may leave at any time. Approximately 200 parking spaces are available.

Llandeilo Town Car Park (Crescent Road)

This is a pay-and-display car park, and parking charges may apply. Approximately 190 parking spaces are available.

Pacers will be available across a range of target finish times, from 1:30 to 3:30.

They will be easily identifiable carrying official pace flags.

Pacers are experienced runners who aim to maintain a steady pace throughout the course.

The official event cut-off time is 4 hours.

For participant safety and road reopening requirements:

• All runners must reach approximately 13km within 2 hours 29 minutes.
• Tail walkers will follow the final participants.
• Participants behind cut-off points may be asked to leave the course.

There are toilets along the course route and at the event hub between the school and sportshall.

Water stations will be located at approximately:

• 4 km
• 8 km
• 10km
• 11km
• 13km
• 17km
• Finish Area

Once across the finish line:

• Collect your finisher medal
• Receive refreshments and water
• Celebrate your achievement with family and friends

Please keep moving through the finish funnel and follow steward instructions.

Yes. Every finisher will receive a medal at the finish line.

This event will be chipped timed meaning every runner will get their own finish time once they cross the mat. Provisional results will be available online shortly after the event.

Participants will be able to access:

• Official chip times
• Position results
• Downloadable finisher certificates

Professional medical staff will be available at the start and finish and along the route at key points.

For safety reasons, buggies will not be permitted in the Half Marathon.

The course is shared with other runners and includes sections that may be narrow, so to ensure the safety and enjoyment of all participants, we ask that runners do not take part with a buggy.

Yes. If you are a wheelchair user, please contact us on actifcommunities@carmarthenshire.gov.uk to let us know beforehand.

All participants need to be at least 18 years old on the day of the Tywi Valley Half Marathon.

Unfortunately, we are unable to offer any refunds for this event.

The event has sold out. No additional entries are available this year.

Unfortunately, headphones are not permitted during the half marathon event unless they are bone conducting.

This is to ensure the health and safety of everyone taking part and enables runners to be able to hear any instructions from marshals.

No. There won’t be any children races, however there will be sporting activities for younger ages on offer at the Event Hub situated outside Ysgol Bro Dinefwr.

If you have a question about the Actif Tywi Valley Half Marathon, please email the Actif Communities Team by email on actifcommunities@carmarthenshire.gov.uk