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London's great escape!

Take on your challenge - your way!

Along the historic Grand Union Canal - London's 'hidden green corridor' a unique & fully supported Ultra Challenge!

939x397 Route

Grand Union Canal

100 km, 50 km or 25 km options

From the heart of London we head out on the towpath towards the Chilterns on through some of the greenest countryside in the South East!

939x397 Grandunion

Great hospitality

All you need, every step of the way

Rest stops en route with free food, snacks & drinks. Medics, marshals & massage. All with covered rest areas and facilities.

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Fundraise...

Take on a tougher challenge!

We have partnered with over 200+ charities so you can take on the challenge for a charity or cause that means something special to you.

939x397 Start

Do it your way!

An epic walk or an ultra run!

It's time to take on a challenger which is a little bit tougher, a little bit longer but will be much more rewarding than anything else out there!

939x397 Teams Compressed

A challenge for all

Join on your own - or create a team

Individuals will meet others, teams can help each other taking the challenge on together or relay the full 100 km in 25 km sections!

The Grand Union Challenge

London to Chilterns. Walk, Jog, or Run it.   27/28 June'15

A unique endurance event along an historic route! It's 100km, 50, or 25km on the Grand Union Canal towpath - a 'hidden green corridor' - that winds its way from the heart of London out towards the Chilterns. The scenery will surprise you – the Challenge will inspire you - and it's London's Great Escape!

Most of the 2000 challengers will walk it, quite a few will jog parts, and some will run the full 100km ultra-marathon style!  A true test of stamina & determination - but is achievable and highly rewarding - push yourself further in 2015!

  • WALK IT! - at a pace that suits you
  • RUN IT or JOG IT! - ideal event to ‘up’ your distance 
  • Unique & varied route. Choose your distance - set your goal
  • Join as an Individual or as a Team 
  • Full 100km and 50km / 25km Challenge options
  • NEW - 'Relay Team' option for groups of 4
  • Central London start - Paddington
  • FREE hot meals & drinks + snacks en route
  • Pace walkers, physios, medics, massage & more
  • Fundraise for a charity of your choice. Over 300 involved

REGISTRATION IS NOW OPEN WITH LOWER REG FEES FOR 2015

IT'S YOUR CHALLENGE, YOUR WAY, FOR YOUR CHARITY

If you want to speak to our team, or if you have any questions about the challenge, please ring on 0207 609 6695 or e mail us at info@grandunionchallenge.com

Check out our other Ultra Challenges!

Our Ultra Challenge Series Partners