Fun Fitness Events in London (2025)

London will be bursting with exciting fitness events in 2025, offering something for everyone—whether you’re an experienced athlete, a casual fitness enthusiast, or just looking for a fun way to get active. From marathons and triathlons to quirky dance workouts and obstacle courses, the capital has a fitness challenge to suit every interest and ability.

To help you plan your year, we’ve rounded up the best fun fitness events in London for 2025. Get ready to lace up your trainers, jump on your bike, or even grab a hula hoop!

Spring Fitness Events (March – May 2025)

Hackney Half Marathon (18 May 2025)

East London’s most vibrant running event is back! With a flat, fast course, live music, and an electric atmosphere, this half marathon is perfect for experienced runners and first-timers alike. Expect a scenic route through Hackney’s parks, streets, and iconic landmarks.

RideLondon (25 May 2025)

One of London’s most anticipated cycling events, RideLondon offers closed-road routes through London and Essex, catering to all levels—from families to elite cyclists. If you’re looking for a challenge, the 100-mile course will push your endurance while letting you soak in stunning cityscapes.

London Superhero Run (TBC May 2025)

Fancy running a 5K or 10K dressed as your favourite superhero? This fun run is perfect for families, groups of friends, or anyone looking to add a playful twist to their fitness routine. Capes are optional but highly encouraged!

Summer Fitness Events (June – August 2025)

London Triathlon (TBC August 2025)

The world’s largest city-based triathlon returns, offering Super Sprint, Sprint, and Olympic distances. The event combines swimming in the Royal Victoria Dock, cycling past London’s famous landmarks, and finishing with a scenic run. Whether you’re a seasoned triathlete or a beginner, this challenge is unforgettable.

Tough Mudder London South (TBC July 2025)

Think you’re tough enough? Tough Mudder is a legendary obstacle course race featuring mud pits, ice baths, electric shocks, and team challenges. This is about camaraderie as much as competition, so round up your friends and take on the ultimate endurance test.

London Fitness Festival (August 2025, Old Billingsgate Market)

A full day of free fitness classes, wellness workshops, and motivational talks, the London Fitness Festival celebrates movement and well-being. Whether you’re into yoga, HIIT, or strength training, you’ll find something to suit your style.

Autumn Fitness Events (September – November 2025)

Royal Parks Half Marathon (12 October 2025)

In this scenic half marathon, run through four of London’s most beautiful Royal Parks—Hyde Park, The Green Park, St. James’s Park, and Kensington Gardens. This event is one of the most picturesque races in the UK and supports numerous charities.

Hyrox London (TBC October 2025)

Hyrox is where functional fitness meets endurance racing. This high-intensity event features a mix of running and workout stations, making it the ultimate challenge for gym-goers and CrossFit enthusiasts.

Winter Fitness Events (December 2025 – February 2026)

London Winter Walk (25–26 January 2026)

Kickstart the year with a scenic walking challenge along the Thames. Choose from the Full Marathon, Half Marathon, or 10K routes, enjoy rest stops along the way, and finish with a well-earned medal and a hot meal.

Santa in the City (December 2025, Central London)

London’s favourite festive fun run returns! Don a Santa suit and dash through the city’s iconic streets in this 5K Christmas run, perfect for spreading holiday cheer while keeping fit.

Fun & Quirky Fitness Events in London (2025)

BLOK Rooftop Boxing (Year-Round, Southbank)

A high-energy boxing-inspired workout combining strength, agility, and cardio in a stunning rooftop setting. If you love training with a view, this class is a must-try.

Retroglow Dance Fitness (Monthly, Various Locations)

Love the 80s and 90s? This neon-lit dance fitness class will have you grooving to nostalgic hits while getting a great cardio workout. No dance experience is needed—bring your best moves!

Hula Schoola (Year-Round, Central London)

Master the art of hula hooping with this playful class, perfect for strengthening your core and improving coordination. It’s a fun way to break a sweat and relive your childhood.

Silent Disco Yoga (Monthly, Various Locations)

Yoga meets silent disco in this immersive class, where you move, stretch, and flow to music played through wireless headphones. It’s a unique fitness experience that blends mindfulness with fun.

Foundry Personal Training Gyms

Need help getting ready for your fitness challenge? At Foundry, we believe in training with purpose. Whether you’re preparing for a marathon, triathlon, or obstacle race, our expert trainers will help you build strength, endurance, and confidence.

With multiple locations across London, we offer small-group personal training that delivers results in a supportive environment. Check out our gyms and start your journey today: Foundry Gym Locations.

Get Involved!

With so many exciting fitness events in London in 2025, there’s no better time to challenge yourself and have fun while getting fit. Whether tackling a half marathon, dancing your heart out, or taking on an epic obstacle course, London’s fitness scene has something for everyone.

Which event are you most excited about? Share your fitness goals and experiences with us at Foundry—we’d love to hear your story!