London race calendar, winter and spring 2027
Cross-country, half marathons, the London Marathon and races a short train ride away, with dates as the organisers publish them and TBC where they have not.
At a glance
| Window | November 2026 to June 2027 |
| Cross-country | Met League fixtures on 14 November, 5 December, 16 January and 13 February |
| London Marathon 2027 | Saturday 24 and Sunday 25 April 2027. The 2027 ballot has closed |
| Half marathons and 10k | Cancer Research UK Winter Run (10k) in February; Run South London on 14 March; Hackney weekend in May |
| Out of town | Bath, Reading, Brighton and Blenheim Palace, all reachable by train |
| Last checked | 19 October 2026, on the organisers' own pages |
This is a calendar of organised events from late 2026 to early summer 2027 that a new Londoner might consider. Where an organiser has not published a 2027 date, we write "dates TBC - check organiser" rather than guess. It is a selection, not a complete list, and we have not ranked anything. If you are looking for a club to train with first, read our guide to running and triathlon clubs.
Cross-country
The Met League is a winter cross-country league for runners aged 10 and over, with clubs from London, Essex, Hertfordshire and Middlesex. Its site lists five fixtures from October to February; the first was on 10 October 2026 at Claybury. The remaining four are below. Clapham Chasers' site also lists the London Cross Country Championships on 7 November 2026 at Parliament Hill (NW5 1QR). We could not confirm dates for the 2027 Southern and National Cross Country Championships, so they are TBC - check organiser.
| Date | Fixture | Host (per league site) |
|---|---|---|
| 14 November 2026 | Met League: Trent Park | London Heathside / Trent Park RC |
| 5 December 2026 | Met League: Uxbridge | Hillingdon AC |
| 16 January 2027 | Met League: Welwyn Garden City | Herts Phoenix |
| 13 February 2027 | Met League: Horsenden Hill | Ealing Eagles |
Half marathons and road races
| Date | Event | Where | Notes |
|---|---|---|---|
| 21 February 2027 | Cancer Research UK London Winter Run | Trafalgar Square, central London | 10k. Run by a charity; check its page for how to enter. |
| 14 March 2027 | Run South London half marathon | Morden Park, passing Wimbledon | New closed-road half marathon, run by Merton Council and The Great Run Company. Start time TBC - check organiser. |
| 14 to 16 May 2027 | HOKA Hackney Moves, including the Hackney Half | Hackney, east London | Festival weekend with a Friday night 10k on 14 May. Race-day timings TBC - check organiser. Entry rules apply; see the organiser's page. |
| Dates TBC | London Landmarks Half Marathon | Central London | We could not confirm a date on an organiser page. Dates TBC - check organiser. |
London Marathon 2027 and the ballot
London Marathon Events states that the 2027 race, the Double TCS London Marathon, takes place over two days: Saturday 24 and Sunday 25 April 2027. The 2027 ballot has already closed, and results were sent on 9 July 2026. The organiser still lists charity places, Good for Age and Championship entry, and a virtual marathon option. When the ballot for the following race opens has not been published, so ballot dates are TBC - check organiser; the ballot page is the place to watch.
The organiser also lists the TCS Mini London Marathon on Friday 23 April 2027. It is a schools event from Horse Guards Parade to The Mall, so it is a spectating option rather than an entry for most adults.
10K races
The Cancer Research UK Winter Run is the main 10k we could confirm on an organiser's page for this period, and the Hackney weekend includes a 10k on the Friday night. London Marathon Events' Vitality London 10,000 falls later, on 26 September 2027, outside this window. Local clubs and park-based organisers publish their own 10ks; ask your club, and watch club pages for championship dates.
Out of town, 1 to 2 hours by train
If you want a weekend away, these events are outside London but within reach by train. They are listed in date order, with the same treatment for each.
| Date | Event | Where | Notes |
|---|---|---|---|
| 14 March 2027 | Bath Half Marathon | Bath | Listed by London Marathon Events. |
| 21 March 2027 | Reading Half Marathon | Reading | Date as shown on the organiser's site. |
| 3 and 4 April 2027 | Brighton Marathon Weekend | Brighton | Marathon, 10K and miles. The organiser says general entry has sold out, with charity places available. |
| 5 and 6 June 2027 | Supertri Blenheim Palace triathlon | Woodstock, Oxfordshire | Sprint and SuperSprint distances, with the swim in the lake at Blenheim Palace. Check the organiser's page for timings and entry. |
Cambridge Half Marathon also takes place in the spring, but the organiser's page was unclear when we checked, so its date is TBC - check organiser.
Planning tips
- Enter early: some events above have already sold out of general places.
- Check whether an event is on closed roads or open paths, and what the organiser says about bag drop and transport.
- If you plan to swim in a triathlon, our open water swimming guide covers places to practise and how to stay safe.
- Cross-country is a low-cost way to race in winter, and clubs often enter whole teams.
Frequently asked questions
When is the 2027 London Marathon?
The organiser states Saturday 24 and Sunday 25 April 2027, as a two-day Double TCS London Marathon.
Can I still get into the 2027 London Marathon through the ballot?
No. The 2027 ballot has closed, with results sent on 9 July 2026. The organiser lists charity places, Good for Age and Championship entry. The next ballot dates are TBC - check organiser.
Is there a cross-country league in London?
Yes. The Met League runs five fixtures from October to February for ages 10 and over. The remaining fixtures are 14 November, 5 December, 16 January and 13 February.
What half marathons are in London in spring 2027?
Run South London is on 14 March 2027, starting from Morden Park. The Hackney Half is part of the Hackney Moves weekend, 14 to 16 May 2027. Check each organiser for entry.
Which races are within a train ride of London?
Bath Half (14 March), Reading Half (21 March), Brighton Marathon Weekend (3 and 4 April) and Supertri Blenheim Palace (5 and 6 June 2027) are all outside London and reachable by train.
What if a date is not listed here?
We only publish dates the organiser has confirmed. If it says TBC, check the organiser's own site.
Sources
- Met League – fixtures – checked 19 October 2026
- Clapham Chasers – London Cross Country Championships listing – checked 19 October 2026
- Cancer Research UK – London Winter Run – checked 19 October 2026
- Run South London – checked 19 October 2026
- Hackney Moves – checked 19 October 2026
- London Marathon Events – checked 19 October 2026
- London Marathon Events – London Marathon – checked 19 October 2026
- London Marathon Events – ballot – checked 19 October 2026
- London Marathon Events – Bath Half – checked 19 October 2026
- London Marathon Events – Brighton Marathon Weekend – checked 19 October 2026
- Reading Half Marathon – checked 19 October 2026
- Supertri – Blenheim Palace triathlon – checked 19 October 2026
This is an independent informational guide compiled by the London BGTC Society for its members; we are not affiliated with, nor the organiser of, any club, race or venue named here. All booking and official information lives on the organisers' own websites, linked above. Dates, hours and programmes are subject to change – always confirm with the organiser before making plans.
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