A group of three hikers are walking in a row along a path. They are wearing green tops and different hiking gear. On either side of the hikers are tall green plants. The path appears to be a gravel path.

Thames Path Mighty Hike

Set yourself an exciting new challenge and hike a full or half marathon down the iconic Thames Path! 

Whether you’re new to long-distance walking or a regular rambler, we’ll be there to support you every step of the way. All you need to do is put one foot in front of the other, knowing every mile and every pound you raise will make a Mighty difference to people with cancer.

Full Marathon

Date
26 July 2025
Location
Windsor
Join
Registration fee: £25
Fundraising pledge: £250
Distance
26 miles
Difficulty
Flat with easy terrain
Route map

Half Marathon

Date
26 July 2025
Location
Windsor
Join
Registration fee: £20
Fundraising pledge: £250
Distance
13 miles
Difficulty
Flat with easy terrain
Route map

What's included in your registration fee?

Green camera
Green takeaway coffee cup
Green flag
Green medal with white star

About the Thames Path Mighty Hike

"Another fantastic Mighty Hike, loved it from start to finish.” Kate, Thames Path 2024

Mighty Hikes support

Whether you’re new to long-distance walking or a regular rambler, we’ll be there to support you every step of the way. All you need to do is put one foot in front of the other, knowing every pound you raise will make a Mighty difference to people with cancer.

Frequently asked questions

  • What is the route?

    The full marathon and half marathon start at Windsor Racecourse, Windsor, SL4 5JJ.

    The half marathon finishes at Marsh Meadow, SL6 9SB. The full marathon finishes at Mill Meadows, Henley-on-Thames, RG9 1BF.

    View the routes on Google Maps.

    View the full marathon GPS route and half marathon GPS route.

    Please note that the routes can be subject to change following health and safety inspections. Any key changes will be communicated on the day.

  • What time does it start and finish?

    The hike will set off in waves 20 minutes apart, from 8.10am for the full marathon and 9.50am for the half marathon.

    You will book your start wave when you register. These are given on a first-come, first-served basis and we advise hikers with a slow pace to book the earliest start wave available to give plenty of time to complete the route.

    For the full marathon, we estimate that the fastest walkers will finish in around 7.5 hours while the slowest walkers could take around 12.5 hours.

    For the half marathon, we estimate that the fastest walkers will finish in around 4 hours while the slowest walkers could take around 6 hours. 

    If your plans change, don’t worry, you can amend your start wave using our Manage My Booking page.

  • How do I get there?

    Parking for the full marathon and half marathon is available at the start at Windsor Racecourse, Windsor, SL4 5JJ.

    Free shuttle buses will run from both finish lines back to the car park in the afternoon.

    You can book parking when you register.

  • When does registration close?

    Registration for the full and half marathon closes at midnight on the Friday 5 June, one week before the hike, or earlier if it sells out. 

    So, sign up today to avoid missing out!

  • What if my Mighty Hike gets cancelled?
    If your Mighty Hike is cancelled for any reason, you’ll be contacted by email and text and live updates will be made to this FAQ document with all the information you need.

Ready to join?

Volunteering at a Mighty Hike

See other Mighty Hikes

Daniel, wearing a bucket hat on a Mighty Hike

Don’t fancy this one? No sweat! We’ve got many other beautiful Mighty Hikes in all corners of the UK, hilly and flat, so you can find the perfect challenge for you. 

Choose a different hike