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The Great Run Company
2025 Environmental Report
Participant Travel
4,097.45 tCO2e Total Footprint
Participant travel is the single largest source of emissions within the GRC portfolio, representing 97.1% of the total travel footprint. The data reveals a clear ‘modal divide’: while the majority of runners drive, a small minority of flyers generate a disproportionate share of the travel footprint. Drivers of Impact: Reach vs. Connectivity – The environmental impact of participant travel is not uniform, but is driven by two distinct geographical factors: Event Reach (Distance): Events with a national profile draw participants from further afield, increasing the average miles per runner and the likelihood of aviation. Connectivity (Mode): The public transport infrastructure of the event location dictates the carbon intensity of those miles. City centers with strong rail links naturally lower the footprint, while remote locations force a reliance on private cars.
Flights
Car
Train
Bus/Coach
Active (walk, cycle)
% of Journeys
% of Distance
% of Emissions
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