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Environment
What we do
Our Environment Team is dedicated to ensuring that our events are delivered in an environmentally responsible way. Their goal is to drive positive change in environmental sustainability through our actions and to inspire our participants, stakeholders and partners to do the same.
What We Achieved Together
trees planted (and event T-shirts avoided) since the start of our partnership with Trees Not Tees in September 2022.
tonnes of clothing collected at our Start Lines and sent to the Salvation Army in 2024 and 2025.
1,804
pairs of shoes collected and sent to JogOn, an initiative to redistribute unwanted running trainers since October 2023.
Our emissions in 2024
2024
Emission per participant
195.6Kg Co2 e
Total emissions
32,543.46 tonnes
Event vehicles
0.01%
Supplier vehicles
0.04%
Volunteer travel
0.05%
Electricity & other fuels
0.06%
Staff travel
0.13%
Accommodation
0.14%
Food and drink
0.59%
Other product purchases
3.51%
Kit & clothing
3.98%
Participant Travel
91.50%
How we are reducing our carbon emissions
Using hydrotreated vegetable oil in our baggage lorries at the TCS London Marathon (as well as in generators at all our other events)
Rolling out a personalised travel planning tool to encourage low-carbon travel by participants and spectators across all our events
Incentivising volunteers to reuse uniform from previous events to cut down on new apparel
Removed beef from all our menus
Here’s how we have lowered our environmental impact
Tackling waste
We try to eliminate waste where possible – for example, no foil blankets were given out at the 2025 TCS London Marathon or the 2025 Brighton Marathon – and try to segregate and recycle as much as we can. Our staffed recycling stations at all events help to improve recycling and recovery rates.
In 2024 we diverted 47 per cent of waste from incineration or landfill (it was reused, recycled or composted). Across all our events we collected 98.5 tonnes of waste - equating to 0.62kg of waste per participant.
We’ve introduced
Water Refill Stations
In 2024 we added Water Refill Stations to the courses of our four largest events, to encourage participants to carry their own water and help cut down on plastic waste.
In 2025 we increased the number of Water Refill Stations along the routes of the GetPRO Bath Half, Brighton Marathon, TCS London Marathon, and The Big Half. An average of 32% of participants across our events wear a hydration vest, a bottle belt, or carry a reusable drinks bottle.
What happens to clothes left at the Start Line? This partnership is giving them new life
Thanks to a partnership between The Salvation Army Trading Company and London Marathon Events, those clothes are being collected, sorted, and given a second life.
Using our platform to raise awareness
2024
250
invitees
from across the mass participation and wider sports industry attended "A Marathon Challenge - a mass movement towards a cleaner future" - a thought-provoking and interactive "imaginarium" event that we held on the eve of the 2024 TCS London Marathon Weekend
2024
174
years’
worth of climate data was displayed in the final miles of the TCS London Marathon, using Climate Stripes (pictured on the route barriers below) to show how London has warmed significantly since 1850
2025
5,000
participants
joined our first Team Green at the 2025 TCS London Marathon - playing their part in reducing the environmental impact of the event by choosing not to drop a kitbag at the start. This reduced the number of baggage lorries needed for the event.
2025
2,000+
people
people took part in a quiz on our Sustainability Stand at the 2025 TCS London Marathon Running Show - finding out how they can Run Greener
The philosophy behind Team Green and how that impacts us and our planet was key. Global challenges like food insecurity, economic barriers, and environmental stressors, including deforestation, are of grave concern. I want my children to live in a safe and healthy world with greenery. Team Green did a good job of reminding us to do so.
team green participant
TCSLM 2025
Here's how you can play your part
Six ways to make your next open water swim more sustainable
Swimming in natural environments is more than just a recreational activity
Find out more
The athletes turning environmental concern into positive action
Sam Haddad chats to three athletes tackling climate change in their sport.
Find out more
Home
Menu
LMF
Children & Young People
Charities
Environment
Communities & DEI
Environment
What we do
Our Environment Team is dedicated to ensuring that our events are delivered in an environmentally responsible way. Their goal is to drive positive change in environmental sustainability through our actions and to inspire our participants, stakeholders and partners to do the same.
What We Achieved Together
trees planted (and event T-shirts avoided) since the start of our partnership with Trees Not Tees in September 2022.
tonnes of clothing collected at our Start Lines and sent to the Salvation Army in 2024 and 2025.
1,804
pairs of shoes collected and sent to JogOn, an initiative to redistribute unwanted running trainers since October 2023.
Our emissions in 2024
2024
Emission per participant
195.6Kg Co2 e
Total emissions
32,543.46 tonnes
Event vehicles
0.01%
Supplier vehicles
0.04%
Volunteer travel
0.05%
Electricity & other fuels
0.06%
Staff travel
0.13%
Accommodation
0.14%
Food and drink
0.59%
Other product purchases
3.51%
Kit & clothing
3.98%
Participant Travel
91.50%
How we are reducing our carbon emissions
Using hydrotreated vegetable oil in our baggage lorries at the TCS London Marathon (as well as in generators at all our other events)
Rolling out a personalised travel planning tool to encourage low-carbon travel by participants and spectators across all our events
Incentivising volunteers to reuse uniform from previous events to cut down on new apparel
Removed beef from all our menus
Here’s how we have lowered
our environmental impact
Participant choice
Our participants can choose whether they would like an event T-shirt or to have a tree planted for them instead. In 2025, 9.14% of participants across all our events chose a Tree not a Tee (16,166 trees planted).
Medals & Tees
In 2024 and 2025 all our medals were made from 100% recycled zinc with a recycled polyester lanyard. 55% of T-shirts/apparel was made from recycled polyester.
Kitbags and cups
Kitbags are made from 75% sugarcane. All cups used at events are compostable.
Banners
Our banner roll branding is made from recycled polyester and if a sponsor changes or rebrands we send it to be recycled in the UK back into plastic pellets (to be made into new products).
Tackling waste
We try to eliminate waste where possible – for example, no foil blankets were given out at the 2025 TCS London Marathon or the 2025 Brighton Marathon – and try to segregate and recycle as much as we can. Our staffed recycling stations at all events help to improve recycling and recovery rates.
In 2024 we diverted 47 per cent of waste from incineration or landfill (it was reused, recycled or composted). Across all our events we collected 98.5 tonnes of waste - equating to 0.62kg of waste per participant.
We’ve introduced
Water Refill Stations
In 2024 we added Water Refill Stations to the courses of our four largest events, to encourage participants to carry their own water and help cut down on plastic waste.
In 2025 we increased the number of Water Refill Stations along the routes of the GetPRO Bath Half, Brighton Marathon, TCS London Marathon, and The Big Half. An average of 32% of participants across our events wear a hydration vest, a bottle belt, or carry a reusable drinks bottle.
What happens to clothes left at the Start Line? This partnership is giving them new life
Thanks to a partnership between The Salvation Army Trading Company and London Marathon Events, those clothes are being collected, sorted, and given a second life.
Using our platform to raise awareness
2024
250
invitees
from across the mass participation and wider sports industry attended "A Marathon Challenge - a mass movement towards a cleaner future" - a thought-provoking and interactive "imaginarium" event that we held on the eve of the 2024 TCS London Marathon Weekend
2024
174
years’
worth of climate data were displayed in the final miles of the TCS London Marathon using the Climate Stripes to show how London has warmed significantly
since 1850
2025
5,000
participants
joined our first Team Green at the 2025 TCS London Marathon - playing their part in reducing the environmental impact of the event by choosing not to drop a kitbag at the start. This reduced the number of baggage lorries needed for the event.
2025
2,000+
people
people took part in a quiz on our Sustainability Stand at the 2025 TCS London Marathon Running Show - finding out how they can Run Greener
The philosophy behind Team Green and how that impacts us and our planet was key. Global challenges like food insecurity, economic barriers, and environmental stressors, including deforestation, are of grave concern. I want my children to live in a safe and healthy world with greenery. Team Green did a good job of reminding us to do so.
team green participant
TCSLM 2025
Here's how you can play your part
Six ways to make your next open water swim more sustainable
Swimming in natural environments is more than just a recreational activity
Find out more
The athletes turning environmental concern into positive action
Sam Haddad chats to three athletes tackling climate change in their sport.
Find out more
Environment
What we do
Our Environment Team is dedicated to ensuring that our events are delivered in an environmentally responsible way. Their goal is to drive positive change in environmental sustainability through our actions and to inspire our participants, stakeholders and partners to do the same.
What We Achieved Together
trees planted (and event T-shirts avoided) since the start of our partnership with Trees Not Tees in September 2022.
tonnes of clothing collected at our Start Lines and sent to the Salvation Army in 2024 and 2025.
pairs of shoes collected and sent to JogOn, an initiative to redistribute unwanted running trainers since October 2023.
Our emissions in 2024
2024
195.6Kg Co2 e
Emission per participant
Total emissions
32,543.46 tonnes
Event vehicles
0.01%
Supplier vehicles
0.04%
Volunteer travel
0.05%
Electricity & other fuels
0.06%
Staff travel
0.13%
Accommodation
0.14%
Food and drink
0.59%
Other product purchases
3.51%
Kit & clothing
3.98%
Participant Travel
91.50%
How we are reducing our carbon emissions
Using hydrotreated vegetable oil in our baggage lorries at the TCS London Marathon (as well as in generators at all our other events)
Rolling out a personalised travel planning tool to encourage low-carbon travel by participants and spectators across all our events
Incentivising volunteers to reuse uniform from previous events to cut down on new apparel
Removed beef from all our menus
Here’s how we have lowered
our environmental impact
Participant choice
Our participants can choose whether they would like an event T-shirt or to have a tree planted for them instead. In 2025, 9.14% of participants across all our events chose a Tree not a Tee (16,166 trees planted).
Medals & Tees
In 2024 and 2025 all our medals were made from 100% recycled zinc with a recycled polyester lanyard. 55% of T-shirts/apparel was made from recycled polyester.
Kitbags and cups
Kitbags are made from 75% sugarcane. All cups used at events are compostable.
Banners
Our banner roll branding is made from recycled polyester and if a sponsor changes or rebrands we send it to be recycled in the UK back into plastic pellets (to be made into new products).
Tackling waste
We try to eliminate waste where possible – for example, no foil blankets were given out at the 2025 TCS London Marathon or the 2025 Brighton Marathon – and try to segregate and recycle as much as we can. Our staffed recycling stations at all events help to improve recycling and recovery rates.
In 2024 we diverted 47 per cent of waste from incineration or landfill (it was reused, recycled or composted). Across all our events we collected 98.5 tonnes of waste - equating to 0.62kg of waste per participant.
We’ve introduced
Water Refill Stations
In 2024 we added Water Refill Stations to the courses of our four largest events, to encourage participants to carry their own water and help cut down on plastic waste.
In 2025 we increased the number of Water Refill Stations along the routes of the GetPRO Bath Half, Brighton Marathon, TCS London Marathon, and The Big Half. An average of 32% of participants across our events wear a hydration vest, a bottle belt, or carry a reusable drinks bottle.
What happens to clothes left at the Start Line? This partnership is giving them new life
Thanks to a partnership between The Salvation Army Trading Company and London Marathon Events, those clothes are being collected, sorted, and given a second life.
Using our platform to raise awareness
2024
250
invitees
from across the mass participation and wider sports industry attended "A Marathon Challenge - a mass movement towards a cleaner future" - a thought-provoking and interactive "imaginarium" event that we held on the eve of the 2024 TCS London Marathon Weekend
2024
174
years’
worth of climate data was displayed in the final miles of the TCS London Marathon, using Climate Stripes (pictured on the route barriers below) to show how London has warmed significantly since 1850
2025
5,000
participants
joined our first Team Green at the 2025 TCS London Marathon - playing their part in reducing the environmental impact of the event by choosing not to drop a kitbag at the start. This reduced the number of baggage lorries needed for the event.
2025
2,000+
people
people took part in a quiz on our Sustainability Stand at the 2025 TCS London Marathon Running Show - finding out how they can Run Greener
The philosophy behind Team Green and how that impacts us and our planet was key. Global challenges like food insecurity, economic barriers, and environmental stressors, including deforestation, are of grave concern. I want my children to live in a safe and healthy world with greenery. Team Green did a good job of reminding us to do so.
team green participant
TCSLM 2025
Here's how you can play your part
Six ways to make your next open water swim more sustainable
Swimming in natural environments is more than just a recreational activity
Find out more
The athletes turning environmental concern into positive action
Sam Haddad chats to three athletes tackling climate change in their sport.
Find out more