The Vitality Big Half
50% Off Using the code BIGHALF50

  • Asset 1 Tower Bridge, London, SE1
  • Asset 2 25 April 2021 *Event Cancelled*
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    13 miles

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    Starts: Tower Bridge

    Finishes: Greenwich

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     Registration - £20 (50% off currently using code BIGHALF50)

     Minimum Sponsorship - £300


    Please be aware that buying a charity place from Asthma UK guarantees you a spot in the Big Half 2021. Joining the team with an own place is ONLY for runners who have already secured a place directly from the Big Half. Please do not sign up as an 'Own Place' runner if you DO NOT have a place at Big Half already.

Asset 5

Join Team Asthma UK in this fantastic event. 

For more information, please contact our Events Team

0300 222 5800


Registration is Open


You could join Team Asthma UK for a half marathon on closed roads in the centre of London. The Vitality Big Half will give you a taster of the London Marathon as it follows the official course of the longer race, starting near London Bridge and finishing in Greenwich. It is then topped off with a festival in Greenwich Park to end the event.

Our Snowdon by night challenge is promising to be another unforgettable experience. You will set off on Saturday night, guided by trained trekking crew, and you’ll reach the summit in the moonlight to take in the views before descending down the Llanberis path while the sun rises over the spectacular landscape.

You’ll always remember seeing the sunrise across Snowdonia National Park after you’ve returned for your celebration breakfast.

Register today for £50 with a minimum sponsorship pledge of £300 and you’ll get your own AUK t-shirt, dedicated support from our events team, fundraising guides and more!

What you'll get

  • Personal support from our events team
  • Fundraising guides and materials
  • Fully guided route by expert event leaders
  • A free champion's breakfast after the trek!
  • Your own branded AUK t-shirt


If you have any questions about signing up for this event, please do not hesitate to contact our Events Team on 0300 222 5800 or email

Please note that this event is not organised by Asthma UK.