To take part in the challenge, join the Facebook group to meet your fellow challengers, fill in the registration form. You can then expect your t-shirt in the post, and you'll be set to go on 1 August!

I don't have Facebook; can I still take part?

Absolutely! Simply set up your JustGiving page and email our team to organise getting your t-shirt.

How can I get friends and family involved?

Your friends and family will love to see your progress throughout the challenge and will look forward to seeing how well you’re doing. Keep them updated with Facebook posts and pictures showing how far you have come. You can also ask them to take part themselves by sharing the registration link on the previous page.

Can I complete the miles at my own pace during the month of the challenge?

Definitely. You can split the miles up in the way that suits you best. The important thing is that you’re giving your best to support people living with cancer.

Can I start the challenge late or early?

We will be encouraging everyone to start and finish the challenge during August. However, if you are joining the challenge later or you have lost some time, you can continue into September.

How can I keep track of the number of miles I am doing throughout the month?

You’ll receive a daily tracker in the post and in your digital fundraising pack which you can use to mark the number of miles you’ve completed each day. Alongside this, you can log your miles digitally in your Macmillan Cancer Support fundraiser, which we’ll email to you once you’ve registered. You can also use digital apps such as Strava and join our Team Macmillan group to track your miles.

Do I need to provide evidence to the charity that I have done the challenge?

No, however we do love to see your photos so make sure to share them on our Facebook group or tag us @MacmillanCancer.

What level of fitness do I need to have?

A reasonable level of fitness is required to complete this challenge, but it should be accessible to most. That said, you should go at your own pace that’s comfortable for you, so please seek the advice of your GP if you have any concerns.

Can I take part if I’m under 18?

Thank you for wanting to support us. As you are under 18, we need your parent or guardian to get in touch with us. They can call us on 0300 1000 200 (Monday-Friday, 9am-5pm). If you have already registered in your name, we will need to follow these steps: Remove you from our Facebook group as this is for over 18s only Cancel your registration If you have created a fundraiser, please go to your fundraising page on Facebook, click ‘edit’ and ‘end fundraiser’.

How long will my free t-shirt take to arrive?

Once you registered, please allow around 2 weeks for your t-shirt to arrive.

What do I do if my t-shirt hasn’t arrived after two weeks?

Please DM Macmillan on social media and the support team will investigate this for you and order a new one if necessary. For more information, please refer to our Terms and Conditions.

How much of the donations go directly to Macmillan?

For donations made in Great British Pounds (GBP), the payment processing fee on Facebook is 1.4% + 20p. The rest of your donation goes straight to Macmillan. When you donate, Facebook asks if you’d like to cover these fees. If you choose to do so, 100% of your donation will go to Macmillan.

Can we fundraise as a group?

Yes. If you would like to fundraise as a group, then we encourage all participants to have their own registration to make getting your t-shirts quick and easy. When you register you will automatically be set up with an individual fundraising page. We recommend you close additional pages and share just one of your fundraising pages as a group.

Is there a minimum fundraising target?

There is no minimum fundraising amount, but we are asking everyone taking part in the challenge to aim for £150 to fund our vital services for people living with cancer.

A Macmillan hiker by a lake doing up their bootlace on a wall

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Walking >
Walk 100 Miles in August Challenge >

Walk 100 Miles in August Challenge

Sign up to Walk 100 Miles in August and raise vital funds to improve cancer care across the UK. Get fit, have fun, and help us to make sure every person with cancer gets the support they need, whoever and wherever they are.

Date

August 2026

Location

Anywhere

Distance

100 miles

About the event

We’re challenging you to walk 100 miles over the 31 days of August. You can split the miles up however you like throughout the month, but it works out as just over three miles each day.

Walk the streets. Head for the hills. Stroll in the park. However you do it - do it for people living with cancer.

How to take part

Register and join our Facebook group

Register for the challenge to Walk 100 Miles this August and join our Facebook group. You can meet others taking part in the challenge and discover lots of fundraising tips that’ll help you see those donations come flying in.

A dark green money collection tin on a light green background.

Set up your fundraising page

Once registered, you can activate the fundraising page we’ve built for you. We recommend setting your fundraising pledge at £160, but the goal is to raise what you can. We’ll provide you with lots of fundraising tips along the way to help you make the biggest impact for people living with cancer.

A dark green cycling top on a light green background.

Get your FREE Macmillan T-Shirt

We will also send you a free Macmillan t-shirt when you sign up so you can truly look the part whilst completing your challenge.

Don't forget to take plenty of photos and share your fundraising page with friends and family to let them know you’re supporting Macmillan!

We’ll support you at every mile

From the beginning, you can get your hands on our free digital fundraising pack which contains everything you’ll need to get started including:

Mile tracker
Fundraising tips
Sponsorship form
Finishers certificate

Fundraising pack

Frequently Asked Questions

How to take part

To take part in the challenge, join the Facebook group to meet your fellow challengers, fill in the registration form and set up your fundraising page. We’ll then send your t-shirt in the post so you're set to go in August!
Absolutely! Simply set up your Macmillan Cancer Support fundraising page and we will send you your t-shirt.
Your friends and family will love to see your progress throughout the challenge and will look forward to seeing how well you’re doing. Keep them updated with social media posts and pictures showing how far you have come. You can also ask them to take part themselves by sharing the registration link.

General FAQs

Absolutely. The challenge is flexible, and the miles can be completed and split up in a way that suits you best.
While we encourage everyone to start and finish the challenge in August, if you join the challenge later or lose some time, you’re welcome to continue into September.
You’ll receive a tracker in the post and in your digital fundraising pack which you can use to tick off your miles each day.

You can also log your distance digitally in your Macmillan Cancer Support fundraiser, which we’ll email to you once you’ve registered.

You can also use digital apps such as Strava to track your distance.
No, however we do love to see your photos so make sure to share them on our Facebook group or tag us @MacmillanCancer.
A reasonable level of fitness is required to complete this challenge, but it should be accessible to most. That said, you should go at your own pace that’s comfortable for you, so please seek the advice of your GP if you have any concerns.
We encourage everyone taking part in the challenge to go at their own pace and do their own research into ways to stay safe while doing their exercise of choice. If you are concerned about injury at any point, pause the challenge and seek medical advice.
Thank you for wanting to support us. As you are under 18, we need your parent or guardian to get in touch with us. They can call us on 0300 1000 200 (Monday-Friday, 9am-5pm). If you have already registered in your name, we will need to follow these steps:

Remove you from our Facebook group as this is for over 18s only

Cancel your registration

If you have created a fundraiser, please go to your fundraising page on Facebook, click ‘edit’ and ‘end fundraiser’.

Macmillan T-shirt questions

Once you’ve registered, please allow two weeks for your t-shirt to arrive.
Please direct message Macmillan on social media and the support team will investigate this for you and order a new one if necessary.

For more information, please refer to our Terms and Conditions.

Fundraising questions

For donations made in Great British Pounds (GBP), the payment processing fee on Facebook is 1.4% + 20p. The rest of your donation goes straight to Macmillan. When you donate, Facebook asks if you’d like to cover these fees. If you choose to do so, 100% of your donation will go to Macmillan.

97% of the money raised on any JustGiving page goes straight to Macmillan. A 1.9% + 30p card processing fee is applied to donations made in GBP to cover card and money transfer charges set by banks and card companies. 1% of the donation is applied to support a portion of JustGiving’s operating costs.
Yes. If you would like to fundraise as a team, then you can create or join a team from your Macmillan Cancer Support fundraising page. Simply log into your page (you can do this in the top corner of the page) Click the 'Create or Join Team' box. Either create a new team from scratch or find an existing team. Each person who joins a team will need to have an individual registration but you will have an overall shared group page where you will be able to see your team fundraising total. The person who set up the team will be the team captain. They have enhanced control and management permissions so will be able to update information and image. All members can invite other people to join the team.
There is no minimum fundraising amount, but we are asking everyone taking part in the challenge to aim for £150 to help us provide better cancer care for everyone in the UK.

Be one of the first 830 to raise £150 to receive a medal! See the Terms and Conditions for further details.