Organisers can’t manage what they don’t measure. Failing to track carbon emissions leaves races vulnerable to greenwashing accusations and deprives teams of data to target high-emissions hot-spots.
For running events, emissions are categorised into three scopes under the Greenhouse Gas (GHG) Protocol:
| Emission scope | Definition | Examples in running events |
|---|---|---|
| Scope 1 (Direct) | Emissions from sources owned or controlled by the race. | Diesel generators used for timing gates and sound systems. |
| Scope 2 (Indirect) | Emissions from purchased electricity. | Plugging race village infrastructure into a local grid. |
| Scope 3 (Value Chain) | The largest category for running events. | Participant travel, volunteer commuting, third-party catering lifecycles, and the upstream production/distribution footprint of merchandise. |
Implementing a footprint audit workflow
To successfully answer the tracking and measuring indicators from the sustainability audit, organisers should execute a three-step cycle:
1. Pre-event registration capture
Capture 100% of intended travel data during the registration and volunteer sign-up process. Make this a mandatory dropdown question: “How do you plan to travel to the start line?” This eliminates response bias, acts as an active commitment device, and provides a highly reliable predictive travel baseline.
2. Post-event validation
Immediately after race day, request raw logistics logs and run a validation check:
- Travel Verification: send a quick, 2-question post-race survey to a random sample of participants to verify if their intended travel matched their actual travel (e.g., “Did you travel the way you indicated during registration?”). Adjust the baseline data accordingly.
- Energy: request electricity meter readings from the venue, or log the fuel volume consumed by generators.
- Procurement: multiply totals of shirts, medals, and food ordered by their corresponding emissions factors.
- Waste: request weight logs from recycling, composting, and landfill contractors.
3. Public sharing and feedback loop
Don’t hide the results. Publish a simple, high-visibility “Sustainability Impact Card” alongside the race results on your website. Use this transparent data to set reduction targets for the following year’s event.
Lateral and cost-effective solutions: gamifying the shared carbon ledger
Organisers can make travel and waste measuring a collective effort rather than an administrative burden:
The inter-club ‘Carbon Cup’ (zero cost): when runners register, they select their running club. Group and calculate the travel emissions for each club using your pre-event registration data. Reward the local running club that achieves the lowest average travel footprint (by carpooling, run-commuting, or taking the train) with a discounted “club entry package” or free team registration for next year’s race.
The ‘zero-to-landfill‘ weight counter (zero cost): set up a live, physical scale at your waste separation hub. Throughout race day, weigh and publicly display the volume of recyclables, compostable organic scraps, and landfill waste. Let runners watch the numbers move in real-time, visualising their collective ecological impact.
The shared Google Sheets ledger (zero cost): if you don’t have budget for specialised tools, create a simple, free Google Sheets file using default government conversion values (such as DEFRA factors) to calculate emissions. Make the sheet public for full community transparency.
Key Resources
Specialised race/sport carbon calculators
Option 1: low/zero cost 💵
TrailCred Trail Race CO2 Calculator (Global)
An interactive calculator designed exclusively for race directors. It estimates carbon footprints (kg CO2e) across energy, merchandise, waste management, and catering. It details specific material impact values (e.g., synthetic performance wear: 5.5kg CO2e vs. wood medal: 0.1kg CO2e).
trailcred.org/race-co2-calculator
Option 2: zero cost 🎁
Sustainable Sport free carbon calculator (UK)
A real-time carbon emissions assessment tool designed specifically for sports clubs and events. It generates reports aligned with the GHG Protocol Corporate Accounting Standard, utilising official UK government (DEFRA) greenhouse gas reporting factors.
sustainablesport.org.uk/free-carbon-calculator
Option 3: zero cost 🎁
Free Government emissions spreadsheets
Download the open-source greenhouse gas conversion tables published annually by agencies like DEFRA (UK) or EPA (US) to manually calculate your emissions.
Event-Wide & Travel-Specific Tracking Tools
Option 2: low cost 💵
Green Events tool (GET) (International/UN-Backed)
A robust event management platform developed on the framework of the United Nations Environment Programme’s event GHG calculator. It allows organisers to estimate and post-audit venue, local ground transport, international flights, and accommodation footprints.
greeneventstool.com
Option 1: zero cost 🎁
Dr. Matt Dolf’s Sport Event Travel Carbon Estimator tool (Global)
An educational Excel-based modelling tool designed with the University of British Columbia (UBC). It allows organisers to input data for individual participants (travel mode, distance, occupancy rates) to accurately isolate the Scope 3 travel footprint.
Request the template via sportsustainabilityresource.ubc.ca
Option 3: zero cost 🎁
Google Forms audit template
Build a free Google Form with options for “Car / Train / Cycle / Walk” and “Distance Travelled.” Use the integrated Google Sheets ‘pivot table’ feature to automatically summarise your transportation totals.
Sharing & Public Reporting Platforms
Option 1: premium/app based 💎
SkootEco event impact profiles (Global)
An interactive carbon accounting and public reporting tool. After calculating emissions, it generates a customisable, public Impact Profile web page to showcase positive climate steps and transparent data to participants.
skoot.eco/solutions/event-carbon-calculator
Option 2: zero cost 🎁
The Company of Biologists event carbon simulator (UK/Global)
An online simulation platform where organisers can enter event parameters and toggle scenarios (e.g., swapping a 50% meat menu for 100% vegan) to instantly visualise carbon savings before reporting them to stakeholders.
biologists.com/sustainability-hub/event-carbon-calculator/
Option 3: zero cost 🎁
Public social media / Email infographics
Create a simple, free text graphic on Canva or a bulleted post on your Facebook page: “2026 Race Footprint: 210 kg CO2e. Top source: Car travel. Target for 2027: Reduce car journeys by 20% through our Carpool Group.”
We hope these tracking tools give you clear baseline data to celebrate your wins and identify growth areas. We’d love to see your race carbon scorecards; and if you have any feedback on these tools or suggestions for simpler tracking methods, please get in touch with us!