TCS London Marathon

Most runners enter via the annual public ballot, which opens the day of the previous year's race and closes about one week later. Results are announced in early July. UK residents can also apply for Good for Age places (based on qualifying times), and charity fundraising places are available through hundreds of registered charities. International runners can secure guaranteed entry through official tour operators.

The cut-off time is eight hours from the mass start. Runners who fall behind the required pace may be directed onto the pavement as roads reopen, but can still complete the course.

Yes. The London Marathon is certified by UK Athletics, which is affiliated with World Athletics, and the BAA accepts qualifying times from it. Many runners use London as their Boston qualifier each year.

The course is essentially flat, with 419 feet of cumulative gain and 531 feet of loss across 26.2 miles, giving it a slight net downhill character. The highest point is 180 feet and the lowest just 6 feet above sea level. There are no sustained climbs; the modest undulations are spread throughout the route.

Late April in London averages a high of around 57°F (14°C) and a low near 39°F (4°C). Conditions are generally cool, partly cloudy, and favorable for fast times. Light rain is possible but not the norm.

The 2026 edition set a new Guinness World Record with 59,830 finishers, surpassing the previous record. The race draws over one million ballot applicants annually, underlining just how sought-after a place is.

The race starts at three points in Blackheath and Greenwich Park (Red, Green, and Blue starts), which merge after approximately three miles. The finish line is on The Mall, near Buckingham Palace in central London.