
Planning a charity 5K can feel complicated, but it is also one of the most rewarding fundraising events a UK charity can run. Your race can be a one-time fundraising event to fund a specific project, or an annual fixture that provides operational income for your charitable organisation.
Whether you are organising a fun run, a sponsored 5K, or a half marathon, you will need several months of planning and support from your community.
We have put together a step-by-step guide to help you organise a charity 5K, along with tips to raise more, capture Gift Aid, and build relationships with donors and supporters at your fundraising events.
In this article:


Ideally, you will have six to twelve months before your charity 5K. You may not have that much time, but you should begin planning your event as early as possible. The first step is to define your event's purpose and goals clearly.
Start by choosing a specific programme or project to fund, then set a financial target. Think beyond the registration fees: a sponsored 5K can bring in far more through peer-to-peer fundraising, where each participant collects pledges from their own network.
If UK taxpayers make eligible sponsorship pledges, your charity can reclaim 25p from HMRC for every £1 donated via Gift Aid. A £10,000 sponsorship target becomes £12,500 in the charity's account, at no extra cost to donors. Build this uplift into your goal from the start.
You can also set non-financial goals: number of new donors, total participants, new sponsors, or social media reach.
Never organise a charity 5K alone. Form a planning committee that includes one or two staff members, volunteers, trustees, and donors. Connecting with local running clubs is also a good way to find additional supporters who already understand the event format.
Once your committee is formed, assign clear roles and responsibilities. Some will be race-day roles, such as race director. Others will cover sponsorship outreach, supplier coordination, registration, and training participants in peer-to-peer fundraising.
One of the committee's first tasks is to agree on a date, time and race location. This is also the moment to choose a name and theme for the event that reflects your charity's mission and encourages participation.
Online fundraising platforms allow charities to hold virtual or hybrid runs, reaching a wider pool of fundraisers and donors. Virtual 5Ks are now a permanent and popular option: participants run anywhere, share photos, and collect pledges by a set date. Your charity publicises their stories on social media to build momentum and celebrate success.
Your development team or committee should build a budget that accounts for all income and costs. Expected income might include entry fees, peer-to-peer pledge collections, sponsorship, supplier pitches, and merchandise sales.
Plan for these race expenses:
Registered charities receive 80% mandatory business rates relief on premises used for charitable purposes. VAT treatment on race entry fees is not automatic: check your position with the Charity Tax Group before setting your entry fee.
Consider also capturing participant data responsibly. When you take race registrations, you are a data controller under UK GDPR. Publish a short privacy notice on the registration page covering what data you collect (name, address, emergency contact, medical information), the lawful basis (contract performance for race information; consent for future marketing), and your retention period. Phrase this clearly for participants and ensure your processes meet your obligations under UK GDPR.
Permits are a significant lead-time item, and this is where UK organisers most often underestimate the timeline.
Once your budget is finalised, research and approach potential sponsors. Start by reviewing your supporter management records for past sponsors and in-kind support from local businesses. You have a better chance with organisations you already have a relationship with.
The next group to approach is independent local running shops and sports retailers. These businesses care about your event participants, so offer them clear marketing opportunities in return for their support.
Also consider local employers via Payroll Giving, HMRC's scheme that lets employees donate from their pre-tax salary. Community grant programmes run by local authorities, community foundations, and national funders are another avenue worth exploring.
One important point: Gift Aid does not apply to corporate sponsorship. Sponsorship is a business expense for the sponsor, not a charitable donation. The Gift Aid uplift applies only to individual donors' sponsorship pledges made under a Gift Aid declaration. For more detail, see the HMRC Gift Aid guidance.
Once you have set the date and begun planning, announce your event publicly. Send save-the-date emails, share on social media, and put up posters locally to reach as many people as possible.


Choosing the right fundraising platform is one of the most consequential decisions you will make. For a UK charity 5K, you need a platform that handles both race entries and peer-to-peer sponsorship pages, and ideally Gift Aid too. Here is an honest look at the main options:
JustGiving is the household-name default that most UK donors recognise. The platform currently shows donors a suggested tip of around 17%, which has been widely criticised in the UK charity press as eating into sponsorship money. That tipping prompt can embarrass charities at the point of donation. It remains useful for P2P pages where cold donors trust a familiar URL.
Enthuse is the mandatory choice if your charity has TCS London Marathon or Great Run places: it is the official fundraising partner for both, exclusively until 2034. Outside those flagship events, its value is harder to justify given the subscription model.
GivenGain is a subscription-free P2P alternative with free automated Gift Aid handling and a growing UK footprint. A solid option for charities running standalone sponsored challenges.
Zeffy is the 100% free platform: no platform fee, no transaction fee, no credit card fee, ever. It brings together event ticketing, peer-to-peer sponsorship pages, online donations and supporter management in one place, so you are not paying three separate tools. Gift Aid handling is included. For the small-to-mid charity currently paying Ticket Tailor for entries, JustGiving for sponsorship, and a CRM for donor records, Zeffy consolidates that stack at no cost.
Whichever platform you choose, make sure it captures a Gift Aid declaration at checkout (donor's full name, home address, and taxpayer confirmation), handles UK GDPR-compliant data, and gives participants their own fundraising page to collect pledges.
Look for a platform that offers:
Once you have a fundraising platform, create a registration and fundraising page to promote the event and collect online pledges. You can also build a dedicated race website using a nonprofit website builder.
Zeffy simplifies the registration process with customisable event tickets, add your charity's logo, colours and a banner. You can also add QR codes so volunteers can scan tickets quickly at the registration table.
If you are raising funds through a crowdfunding page, share your charity's story alongside runner stories to inspire supporters to share and collect pledges.
Handling Gift Aid on sponsorship
Gift Aid applies to individual sponsorship pledges from UK taxpayers, but not to the race entry fee itself (that is payment for a place, not a donation). To claim Gift Aid, each donor must provide a declaration with their full name, home address, and confirmation that they are a UK taxpayer. Your charity must be HMRC-recognised and hold records for at least 6 years; the claim window is 4 years. The HMRC Gift Aid guidance has full details.
For cash and contactless bucket donations at the finish line (£30 or under per donation), you may be able to claim a 25% top-up under the Gift Aid Small Donations Scheme (GASDS), up to £8,000 in eligible small donations per tax year. See the Charity Tax Group for technical guidance.
Display your charity registration number (from the Charity Commission for England and Wales, OSCR, or CCNI as appropriate) on your registration page, along with your Fundraising Regulator membership badge. These trust signals matter to UK donors before they give.
Once initial planning is in place, build a marketing strategy to promote your 5K. Start with free options: email, social media, a press release to local media, and peer-to-peer outreach.
A charity 5K gives participants a compelling reason to spread the word themselves. Maximise this with a fundraising competition: approach local businesses for a prize to award to your top fundraiser. Encourage participants to collect pledges based on distance, time, or personal health goals.
When you open registration, personally connect with each participant about collecting pledges. Provide details on the programme being funded and a short training guide on setting up their peer-to-peer fundraising page. Keep participants and supporters updated regularly over the following months.


As race day approaches, plan logistics and order essential race items. You will need:
Now is the time to contact potential food and drink suppliers. A charity 5K can draw hundreds of participants, volunteers and spectators. Your charity can sell pitch space to local traders and running shops to market to the crowd, generating additional income alongside entry fees.
While contacting suppliers, begin recruiting volunteers. You will need cover for the registration table, water stations, course marshals, race direction, and first aid coordination.
The final step at this stage is to finalise and mark the race course for participants. Walk the route, check for hazards, confirm where marshal points are needed, and ensure the course layout matches your permits.


One to two weeks before race day, send targeted communications to all groups.
Send race details, parking instructions, and directions on collecting race bibs, shirts and other materials. Remind participants they have one to two weeks left to collect final pledges. Share a fundraising update showing how much has been raised and who is leading the fundraising competition. Note that pre-race emails to participants rely on the lawful basis you captured at registration, usually contract performance for race information, and consent or soft opt-in for future marketing communications. Ensure your approach meets your obligations under UK GDPR.
Send parking instructions, the race schedule and any other details they need for their pitch or stall.
Send parking instructions, last-minute updates to assignments, and the full race-day schedule with timings and briefing location.

Race day has arrived. Arrive early to set up event banners, start and finish lines, first aid stations, water stations and signage. Finalise online registration details and work with volunteers to set up registration tables. Make sure all volunteers have smartphones or devices to scan QR codes on digital tickets.
When participants arrive, volunteers should distribute race materials and scan QR codes to check in each runner. A smooth check-in sets the tone for the whole event.
Assign a small team of volunteers as race directors to oversee the start, monitor the course, manage suppliers and handle any unexpected situations. This frees you to do what matters most: connect with donors, supporters and sponsors to build relationships. Each of these contacts could become a significant funder for your next event.



Send a thank-you acknowledgement to all donors, participants, volunteers and sponsors within 48 hours of race day. Share the total raised and other highlights via social media, newsletters and your local press.
For Gift Aid: the donor does not receive a 'tax receipt'. Your charity submits the Gift Aid claim directly to HMRC through HMRC Charities Online. Basic-rate taxpayers do not need to do anything themselves. Higher-rate (40%) and additional-rate (45%) taxpayers can claim the difference between their rate and the basic rate through Self Assessment, using their own donation records.
Another way to strengthen relationships with donors and supporters is to show you value their input. After the race, send surveys to participants and sponsors. Review your results against your original goals and analyse finances, attendance, participant feedback, and Gift Aid claims. Use what you learn to make the next event even better.

Organising a charity 5K is one of the most effective ways to raise funds, attract new supporters, and build community around your cause. When planning your event, choose a name and theme that reflects your charity's mission and gives participants a real reason to fundraise.
Zeffy is a 100% free fundraising platform that can help you build a race page, manage event registration, run peer-to-peer sponsorship, and handle Gift Aid. Donors can pay an entry fee, set up a fundraising page, and collect pledges from their networks. Sell your 5K entries for free and keep every penny you raise.

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