When Is London Half Marathon 2026

So, you’ve decided to run 13.1 miles through the streets of London. Either you’ve had a very convincing pep talk from a friend, or you’ve just signed up for a race while on your third glass of wine. Either way, welcome to the club of people who willingly choose to run across a city with questionable plumbing.

First, the golden nugget of information: the London Half Marathon 2026 is scheduled for Sunday, March 22nd, 2026. Mark it in your calendar with a highlighter and a fire extinguisher, because you’re going to need both for the emotions you’ll feel on race day.

Why March? Are They Trying to Freeze Us?

Yes, March. Specifically, late March, when London’s weather is still trying to decide if it’s winter or a mild autumn that ate too many beans. On race day, you could get sunshine, sideways rain, or a surprise hailstorm that makes you look like a human golf ball.

The official date isn’t just a random Tuesday. The London Marathon folks love symmetry, so they schedule their half marathon exactly one month before the full marathon (which is April 26, 2026). It’s like a teaser trailer for the main movie, except the main movie has you crying in a portaloo.

The Big, Obvious Question: How Do I Enter?

If you thought you could just show up at the starting line in your pajamas, think again. Ballot entry opened in June 2025 and closed in September 2025. Yes, you missed it. Don’t worry—so did half of London.

But here’s the twist: there’s a charity entry route. You can run for a cause that isn’t “avoiding the post-race pub.” Charity places are like the VIP section of a nightclub—you pay extra, but you get a fancy t-shirt and the smug satisfaction of helping humanity. Most charities ask for a £300–£500 fundraising minimum. That’s roughly the cost of 200 post-race protein bars, but you can’t buy dignity at Lidl.

Alternatively, if you’re a super-runner, you can get a Good for Age entry. This is for people who run a 1:35 half marathon while eating a bagel. If that’s you, congratulations—you are a biomechanical freak and we salute you.

What to Expect on the Day (Spoiler: It’s Beautiful and Horrible)

The course starts near Tower Bridge, which sounds iconic. It is. Until you realize you’re running over a bridge that’s also used for cars, buses, and that one tourist taking a selfie in the middle of the road. Surprising fact: the London Half Marathon shares parts of the route with the full marathon, but only the pretty bits. You don’t get to see the dodgy underpass where pigeons plot your demise.

The race finishes in Greenwich Park, a lovely green space that, on race day, smells like sweaty sausage rolls and cheap deodorant. The last kilometer is a gentle uphill that feels like climbing Everest in Crocs. Pro tip: if you see the Cutty Sark, you’re almost done. If you see a guy dressed as a giant teabag, you’re definitely in London.

The Weather Gamble

March 22nd, 2026? The average temperature is about 8°C (46°F). That’s cold enough to make your nipples feel like they’re starring in a horror movie. But don’t overdress! You’ll start the race wearing gloves, a hat, and a parka, and by mile 5 you’ll be discarding them like a snake shedding its skin. Surprising fact: organizers collect abandoned clothes and donate them to charity. Your old fleece might end up on a mannequin in a thrift store. Or on another runner next year.

The Real Reason to Run (Besides the Medal)

Look, the London Half Marathon is not just about the run. It’s about the crowd. Londoners are notoriously grumpy on the Tube, but put them on a street corner with a cowbell, and they turn into cheerleading psychos. You’ll hear: “Come on, love, you’ve got this!” from a 70-year-old woman holding a teacup and a sign that says “YOU’RE NOT LAST, THE GUY BEHIND YOU IS.”

And the medal? It’s heavy. You can actually use it as a weapon in case of a mugging. The 2025 medal had a spinning design, so for 2026, we can only hope for something with a little engine that goes “vroom.”

A Few Final, Slightly Unhinged Tips

First, don’t eat a full English breakfast before the race. A plate of beans, sausages, and fried bread is a great way to experience a “personal disaster” rather than a personal best. Second, bring toilet paper. The portaloos are like a war zone, and the hand sanitizer is just pain with a scent.

Finally, remember that you’re not just running for yourself. You’re running for the Instagram photo, the smug LinkedIn post, and the right to say “Oh, it was nothing” while limping for three days. The London Half Marathon 2026 is on March 22nd. Train smart, lube up, and for the love of all that is holy, don’t wear cotton socks.

Now go stretch. Seriously. Your hamstrings are already judging you.