Run one of the UK’s most popular city half marathons and support people living with dementia
The Cardiff Half Marathon is one of the UK’s largest and most exciting half marathons, taking runners through the heart of the Welsh capital. The route passes some of the city’s most iconic landmarks, including Cardiff Castle, Cardiff Bay and the Principality Stadium, with fantastic crowd support throughout.
With a fast, flat course and an electric race-day atmosphere, this is a great event whether you’re aiming for a personal best or taking on your first half-marathon while raising funds for Dementia Adventure.
Date: October 4th 2026
What you get as part of ‘Team Dementia Adventure':
- Guaranteed charity place in the Cardiff Half Marathon
- Fast, flat city centre route
- Closed road race with full event support
- Finisher medal and race pack
- Dementia Adventure running vest
Fundraising & Fees
By taking part in the Amsterdam Marathon for Dementia Adventure, you’ll help us fund supported holidays, outdoor experiences, and training for families affected by dementia. As a small charity, we rely on our runners to help us continue this work.
Costs (for both distances):
- Registration fee: £25
- Minimum fundraising target: £250
Your fundraising helps cover the cost of your place, with the remaining funds going directly to Dementia Adventure. Any fundraising above your target supports our work in full.
We’ll support you with:
- Fundraising ideas and guidance
- Help setting up your fundraising page
- A Dementia Adventure running vest
- Ongoing support from our team
Training and preparation
A half-marathon is an achievable challenge with the right preparation. Many runners follow a 10 to 16-week training plan, depending on their experience and starting fitness.
Whether you’re aiming to complete the distance or improve your time, building up gradually and staying consistent will help you prepare.
FAQs
How far is the race?
The half-marathon distance is 13.1 miles (21.1 km).
Is the course suitable for beginners?
Yes. The flat course and supportive atmosphere make it suitable for both first-time and experienced runners.
Do I need to arrange my own travel?
Yes. Travel and any accommodation are arranged separately (cost to be covered by the participant).
Can I take part with friends or colleagues?
Yes. This is a great challenge to take on with friends, family or workplace teams.