Opening the door for more people, more charities, more communities
Once a year, tens of thousands of people transform the streets of London into a river of human effort and purpose — but when 1.33 million souls sought entry into that river, the organisers of the London Marathon faced a question older than sport itself: how do you honour a longing that has grown larger than the vessel built to hold it? Their answer, for one extraordinary occasion in April 2027, is to let the river run for two days, doubling the number of those who may cross from Greenwich to Westminster, and channelling the resulting tide of goodwill into £150 million for charity and £400 million for the broader economy.
- A record-shattering 1.33 million ballot applications — up from 1.13 million the year before — made it clear that the London Marathon's single-day format had been quietly outgrown.
- Organisers face the intricate challenge of splitting 100,000 runners, elite athletes, and wheelchair competitors across two days without fracturing the race's identity or its iconic Greenwich-to-Westminster route.
- Nine years of planning lie behind this moment — a concept first imagined in 2017 and twice denied before finally receiving the green light for 2027.
- The expansion is explicitly framed as a one-time response to exceptional demand, not a permanent reinvention, with the marathon expected to return to its traditional single-day format in 2028.
- Beyond the race itself, the two-day format is projected to nearly double charitable fundraising from £90 million to over £150 million, with all additional revenue directed toward youth fitness initiatives across the UK.
The London Marathon will do something it has never done before. In April 2027, the race will unfold across two consecutive days — Saturday the 24th and Sunday the 25th — a structural departure that organisers are careful to call a one-time-only event, born from a surge in public appetite that the traditional format simply cannot contain.
The scale of demand made the decision almost inevitable. A record 1.33 million people entered the 2027 ballot, surpassing the previous year's record of 1.13 million. Where the standard single-day race accommodates around 50,000 runners, the two-day expansion will welcome 100,000 — effectively doubling the odds for every hopeful who entered the lottery. Chief executive Hugh Brasher described the move as an act of generosity toward a public whose enthusiasm has outgrown the existing model, calling it the marathon's most ambitious evolution to date.
The logistics reflect that ambition. Ballot results will be announced in early July, with the Sunday draw conducted first, followed by Saturday's. Elite and wheelchair athletes will be divided across both days, but every one of the 100,000 participants will run the same 26.2-mile route from Greenwich to Westminster that has defined the race for decades.
The projected impact is considerable. Charitable fundraising is expected to exceed £150 million — nearly double the £90 million raised in 2026 — while the broader economic benefit to the UK is estimated at £400 million. The Mini London Marathon, drawing more than 20,000 young runners, will open proceedings on Friday, April 23, and all additional revenue from the expanded format will be directed through the London Marathon Foundation toward youth fitness programmes.
The idea itself is older than it appears. Brasher revealed the two-day concept was first proposed in 2017, with 2020 as the original target — a plan that was refused. Nine years of negotiation preceded this approval. Once 2027 concludes, the marathon will return to its familiar rhythm. The expansion is a considered, singular response to an extraordinary moment of collective longing.
The London Marathon is breaking its own format in 2027. For the first time in its modern history, the race will unfold across two days—Saturday, April 24 and Sunday, April 25—a structural shift that organisers describe as a one-time-only experiment born from an almost unmanageable surge in demand.
The numbers tell the story. Last year, 1.33 million people entered the ballot for a chance to run the 2027 marathon. That shattered the previous record of 1.13 million applicants in 2026. The traditional single-day format accommodates roughly 50,000 runners. The two-day expansion will double that to 100,000 participants, effectively doubling the odds for anyone who entered the lottery. Hugh Brasher, chief executive of London Marathon Events, frames it as an act of generosity toward a public appetite that has simply outgrown the existing model. "We're opening the door for more people, more charities and more communities to take part," he said, calling the 2027 edition "our most ambitious evolution to date."
The logistics are intricate. Everyone who applied for 2027 will be entered into a single ballot, with results announced in early July. The draw will happen first for the traditional Sunday slot, then again for the Saturday addition. The elite athletes and championship runners will be split across the two days—women's elite and female wheelchair competitors leading one day, men's elite and male wheelchair athletes leading the other. But all 100,000 runners, regardless of which day they run, will follow the same route: the iconic 26.2-mile path from Greenwich to Westminster that has defined the London Marathon for decades.
The economic and charitable projections are substantial. Organisers expect the two-day format to raise more than £150 million for charities—a significant jump from the £90 million raised by 2026 participants. The broader economic impact is pegged at £400 million for the UK. Sadiq Khan, London's mayor, endorsed the expansion as fitting for a city he described as the world's sporting capital, though he was careful to note the one-year-only caveat.
The path to 2027 was longer than it might appear. Brasher revealed that the concept was first conceived in 2017, with an initial target of 2020. Permission was denied then. Nine years of planning and negotiation preceded this green light. The Mini London Marathon, which draws young runners, will occupy Friday, April 23, with more than 20,000 participants expected. All additional revenue generated by the expanded format will flow through the London Marathon Foundation to projects promoting activity and fitness among children and young people across the UK.
Brasher has been emphatic: this is not the new normal. The two-day format exists because 2027 represents an exceptional moment—a record-breaking surge in public interest that the traditional single-day structure simply cannot accommodate. Once the 2027 edition concludes, the marathon will return to its established rhythm. The expansion is a one-time answer to an extraordinary question: what happens when demand overwhelms supply, and you have the infrastructure and will to say yes to more people?
Citas Notables
The 2027 London Marathon double is our most ambitious evolution to date—a once-in-a-generation one-time-only reimagining of what a marathon and city-wide celebration of activity can be.— Hugh Brasher, chief executive of London Marathon Events
London is the sporting capital of the world and I am delighted that, for one year only in 2027, the world famous London Marathon will expand into a two-day event.— Sadiq Khan, Mayor of London
La Conversación del Hearth Otra perspectiva de la historia
Why now? The London Marathon has been running for decades. What changed to suddenly make 1.3 million people want to enter?
The appetite was always there, but it's been building. Last year's record was already 1.13 million. This year it jumped another 200,000. You hit a tipping point where the traditional format becomes a lottery with terrible odds. People know they probably won't get in, but they enter anyway.
So this two-day thing—is it a permanent solution, or are they just buying time?
They're very clear it's one year only. Brasher said it explicitly. This is a pressure valve for 2027, not a new model. After that, it goes back to the single day.
But won't that be disappointing? If you don't get selected for 2027, you're back to the old lottery in 2028.
Absolutely. That's the tension. They've doubled the slots for one year, which means 100,000 people get in instead of 50,000. But it also means 1.2 million people still don't. The disappointment doesn't disappear; it just gets deferred.
What about the route itself? Are they changing it to handle double the runners?
No, that's the remarkable part. Both days use the exact same 26.2-mile path from Greenwich to Westminster. They're not widening roads or creating new infrastructure. They're just running it twice.
And the money—£150 million for charity, £400 million for the economy. Those are big numbers. Are those realistic?
They're projections based on doubling participation and the spending that comes with it. More runners means more spectators, more hotel nights, more food and transport. Whether it hits exactly £400 million is unknowable, but the direction is right.
Why did it take nine years to get permission for this?
Logistics. You're asking the city to accommodate a massive event twice in two days. The emergency services, the councils, the route management—everyone has to sign off. They first proposed it in 2017 for 2020. That didn't happen. This time, enough stakeholders aligned.