Ethical Endurance publishes evidence-based reviews and buying guides that test sustainability claims from endurance sport brands, covering running shoes, sportswear emissions and the ingredients in energy products. Readers get explanations of supply-chain terms like Scope 3 and practical advice on choosing kit that is genuinely better rather than greenwashed.

A personal newsletter from a cross-country skier recounting training and racing the Marcialonga, including the snowy conditions and the nerves of the start line. It also includes an episode of a playful science-fiction serial set in Antarctica.

The Hybrid Letter covers hybrid racing formats such as Hyrox and Deka, mostly through interviews with athletes and organisers about training, mindset and event results. Readers get race recaps, athlete profiles and practical insight for strength and endurance competition.

A personal newsletter from a frequent business traveller who runs and does triathlons, sharing book recommendations for endurance sport and reflections on training while on the road. It also promises practical advice on keeping up a training schedule, business travel, booking flights and maintaining airline status.