Entries to the 2026 Royal Parks Half Marathon open soon. Please email us to register your interest in a place in our team.

The Royal Parks Half takes in some of the capital's world-famous landmarks on closed roads, and four of London's eight Royal Parks: Hyde Park, Green Park, St James's Park and Kensington Gardens.

The Royal Parks Half Marathon is an excellent training course for the London Marathon as it follows a very similar route. We’d recommend this scenic race to anyone interested in running the London Marathon for Terrence Higgins Trust who is in need of a bit more practice with long-distance runs.

We would love to have you on Team Terry!

We’ll be here to support you from the moment you register until you cross that finish line.

Is this your first half marathon? Read our top tips for first-timers from our supporter and expert marathon runner Annie Foulds.

Further benefits of joining Team Terry:

• Free Terrence Higgins Trust running vest with your name on it.
• Comprehensive guide to help kickstart your fundraising.
• Committed support with your training and fundraising from our dedicated team.
• Opportunity to meet and make friends with like-minded people united behind the same good cause.  
• Regular news and updates to keep you informed about our work, campaigns and services.

Got a question about our challenge events or fundraising for Terrence Higgins Trust? Take a look at our FAQs.

Your support and fundraising help fund vital services including our one-of-a-kind sexual health helpline, HIV testing, counselling, and peer support programmes.

We are working to ensure that there will be no new HIV cases in the UK by 2030. Everyone living with HIV will be diagnosed, in treatment and care, free from stigma and able to take advantage of life’s opportunities.

Thanks to the incredible support of our fundraisers — including our challenge event runners — last year we were able to:

• Respond to 12,591 enquiries through our free THT Direct helpline
• Distribute over 5,700 HIV self-test kits at no cost to those who needed them most
• Cover the cost for 500 people living with HIV to access My Community, our secure online space
• Win the case to extend opt-out HIV testing to 89 hospitals across England
• Deliver over 278 Positive Voices sessions, reaching more than 21,100 people with powerful stories about living with HIV

If you have any questions, please get in touch - we'd love to hear from you!

Contact our Fundraising team.