United Kingdom·July 15 2025

The Seven Sisters - South Downs National Park

The UK's best one day hike from London



A great destination for a one day company off site close to London - perfect as either a charity challenge or as a team get together. The Seven Sisters is one of the most beautiful places in the UK and provides the setting for the best one day hike originating in London or the South East. Super accessible from London, the Seadford to Eastbourne route takes in some of the most beautiful scenery in the South Downs National Park, if not the entire south of England, including the Birling Gap and cliffs at Beachy Head. Starting at Seaford Station (which has regular trains direct from London Victoria) we hike the coastal trail for 14 miles (22.5km) enjoying incredible channel views for the entire route; we finish at Eastbourne Station for direct trains back to the capital. The hike lasts 7-8 hours including lunch and rest stops. Free of any technical sections, it is suitable for anyone with a moderate level of fitness. Lead by our CEO, Oliver Browne, a professional adventurer and certified Mountain Leader he will be accompanied by London Ambulance Service paramedic, and adventurer Callum Lees-Walsh and other Mountain Leaders.



An Epic Day Out For Your Team

An Epic Day Out For Your Team

Whether you are doing the walk as a charity challenge or corporate offsite this walk will be an epic outing for all participants.

Stunning Coastal Landscapes

Stunning Coastal Landscapes

Enjoy some of the best scenery in the UK.

Easy Access from London

Easy Access from London

Both our start and end points have direct trains to London Victoria in under 2 hours.

Fully Guided and Supported

Fully Guided and Supported

We will have a full team on hand to support your participants. Working on a ratio of 8 guests per guide, our CEO, Oliver Browne will be on hand to deliver a brilliant event for you.

Variety of F&B Options

Variety of F&B Options

We offer a variety of venues, along with gourmet picnic options, catering to all budgets.

On-hand Paramedic

On-hand Paramedic

Co-guide Callum is a fully-trained paramedic with the London Ambulance Service.

Meet The Team

Oliver Browne

Oliver Browne

Oliver is the CEO of True Summit Adventures, a certified Mountain Leader and an experienced adventurer and alpinist.

He was previously a professional player at Guards Polo Club in Windsor Great Park, retiring in 2015. He then spent several years working in financial services, before becoming a full time adventurer in 2019 and launching his adventure business shortly afterwards.

Oliver has competed in many marathons, duathlons and climbed many mountains of 4, 5 and 6000m including European Classics, Mont Blanc and Gran Paradiso, Andean Classics, Vallunaraju, Cotopaxi, Antisana and Chimborazo, Toubkal and Kilimanjaro (x7) in Africa, Lobuche East (x2) and Mera Peak in Nepal as well as touching Camp 3 on Mount Everest in Spring 2021, before becoming unwell with Covid19.

Six weeks after leaving hospital in Kathmandu he won the NOMAN, Barcelona to Ibiza rowing race in 93 hours and came second in the 2022 edition of the Talisker Atlantic Challenge, rowing the Atlantic in 32 days 13 hours  - the 8th fastest time of all time.


Callum  Lees-Walsh

Callum Lees-Walsh

Callum joins True Summit Adventures with a wealth of experience.

Callum is a paramedic with the London Ambulance Service and an experienced adventurer and outdoor instructor.

With his infectious enthusiasm and distinctly caring manner he is the perfect accompaniment to this adventure.

The Best Day Walk Close to London

The Seven Sisters

The Seven Sisters

The walk from Seaford to Eastbourne spans approximately 13 miles along the scenic South Downs Way. Starting in Seaford, you pass through the picturesque Seven Sisters Country Park, featuring the stunning chalk cliffs of the Seven Sisters and the tranquil Cuckmere Haven, where the Cuckmere River meets the English Channel. The route continues to the historic Belle Tout Lighthouse and the iconic Beachy Head, offering panoramic views. The walk concludes in the seaside town of Eastbourne, known for its Victorian pier and pebble beach. This hike is renowned for its breathtaking coastal scenery and diverse wildlife.


The Day in More Detail




Summer Months Work Best!

8 am: Depart London Victoria

9:45 am: Arrive in Seaford

Breakfast, Briefing and Speaking Opportunity for Senior Leadership

10.45 am: Begin Walk, following the coastal path

11.45 am: Drink / Toilet break at the Cuckmere Arms

1.30 pm: Lunch break at the Birling Gap

2.30 pm: Continue to hike along the coastal path from to Eastbourne via Beachy Head

5 pm: Arrive into Eastbourne. Celebration drinks, snacks and debrief

6.30 pm: Event finishes and participants take the train back to London Victoria

What's Included

What's Included

True Summit Adventures Cap

Certified Mountain Leader


Breakfast in Seaford

Maximum 8 Participants per Mountain Leader


Post Walk Drinks

Snack Packs

Risk Assessment and Planning

Full Insurance

Train from London Victoria

Book Your Adventure

Seven Sisters Hike



The Seven Sisters Day Hike can take up to 7 hours, including regular rest breaks. There is some ascending and descending to be done, but anyone with moderate fitness can complete this walk

Participants should come dressed for a hike in the English countryside, meaning hiking shoes or boots, layered clothing and waterproofs.

There are lots of exit points along the route and we will see anyone safely into a taxi to Eastbourne.

Trip Tips

Where Comfy Shoes!

Where Comfy Shoes!

The path we use is good, but we still recommend wearing hiking shoes.

Bring a Water Bottle

Bring a Water Bottle

It is easy to get dehydrated when hiking! There will be lots of water available for participants. They will just need the all important bottle.

Take the Train

Take the Train

Trains are by far the best way of joining this linear hike thanks to superb connections with central London.


The bespoke trips that True Summit Adventures offer are ideal. Oliver navigates around the availability, geographical and varying fitness level hurdles with patience and still manages to provide an all-encompassing, breathtaking itinerary of hiking and fun activities along the way.

Dmitry Tokarev, CEO, Copper Technologies

“Top notch; First Class, Unparalleled; Exceptional. Choose your superlative and True Summit Adventures meets and exceeds it”

George Kappaz, CEO, Astrata Group

“I’ve used Oliver and True Summit for personal and corporate trips and wouldn’t think of using anyone else. Well organised, loads of fun and great people.”

Paul Oberschneider, CEO, Hilltop Credit Partners

The Seven Sisters - South Downs National Park

United Kingdom· July 15 2025· 1 day