In a previous episode of the podcast with guest Brian Schmidt of P3R, we saw how it is possible for even a very large race like the Pittsburgh Marathon to achieve zero waste status - that is, the goal of diverting more than 90% of total race waste away from landfill. But what about carbon emissions? Is it equally feasible to aspire towards carbon neutrality, that is to say, putting on an event with net zero (or perhaps even negative) carbon footprint. Well, that’s what we’ll be discussing today with my guest Porter Bratten, owner of Washington-based Blackfish Ventures and a passionate practitioner of sustainability in all the races he puts on. We’re going to be looking at what makes up a race’s carbon footprint, how to formulate a practically achievable carbon mitigation strategy, and how carbon offsetting can help bridge the gap to carbon neutrality where further improvements in lowering carbon emissions may not always be possible.  In this episode: What contributes to your race's carbon footprintDirect emissions, indirect emissions and purchased energyUnderstanding which emissions you can measure and controlEstimating your race's carbon footprintMaking participant carpooling workOffering a no-medal/no-shirt optionGreen electricity: what it is, how much it costs and how to get itInvolving your participants in your sustainability strategyHow carbon offsetting worksDoing due diligence on and selecting carbon offset projectsUsing carbon offsetting to offset participant travel and shipping emissionsAre participants wiling to pay a "sustainability premium" for greener races?Making the most of sustainability sponsorsThanks to RunSignup for supporting quality content for race directors by sponsoring this episode. More than 26,000 in-person, virtual, and hybrid events use RunSignup's free and integrated solution to save time, grow their events, and raise more. If you'd like to learn more about RunSignup's all-in-one technology solution for endurance and fundraising events visit runsignup.com. You can find more resources on anything and everything related to race directing on our website RaceDirectorsHQ.com. You can also share your questions about public relations, earned media or anything else in our Facebook group, Race Directors Hub.