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Outsiders alternatives: newsletters like it

11 newsletters in the NewsletterFIT index cover the same topics as Outsiders (running challenge, endurance training and habit building). The closest matches are The Science of Maximal Athletic Development, Endurance Essentials and andreascher. They are ranked by how many topics they share with it, then by publicly shown subscribers.

Updated Nov 15, 2026 · ranked by shared topics, then publicly shown subscribers · methodology

About Outsiders

Trekking, fastpacking y outdoor sin fronteras para quienes piensan fuera del mapa.

Full profile
  1. 1
    The Science of Maximal Athletic Development26K subscribers

    SubstackEvery two weeks · last post 12 days ago

    From recent posts: The Science of Maximal Athletic Development publishes in-depth articles and podcast summaries on endurance training, strength development, and metabolic health for coaches and athletes. Content mixes biomechanical…

    Likely audience: Endurance athletes

    1 shared topic

  2. 2
    Endurance Essentials12K subscribers

    SubstackWeekly · last post 8 days ago

    Endurance Training & High Performance Habits

    Likely audience: endurance athletes

    1 shared topic

  3. 3
    andreascher4K subscribers

    SubstackEvery two weeks · last post 15 days ago

    A place to gather for deep connection, real talk, uplifting energy and creative prompts! Let's hang out, friends!

    Likely audience: subscribers of The School of Wonder

    1 shared topic

  4. 4
    Allegra 4K subscribers

    SubstackEvery two weeks · last post 12 days ago

    From recent posts: Allegra Samsen publishes a personal blog covering fitness, travel, and lifestyle advice. The content mixes reflective essays on mental health and identity with practical guides on packing and running.

    Likely audience: Fashion-conscious individuals

    1 shared topic

  5. 5
    joefriel2K subscribers

    SubstackWeekly · last post 6 days ago

    Coach, author, athlete

    Likely audience: endurance athletes

    1 shared topic

  6. 6
    Ron’s Ramblings—

    SubstackWeekly · last post 9 days ago

    A life reimagined: lessons learned, challenges embraced, and stories told from the best seat in the house ♿️.

    Likely audience: Marathon enthusiasts

    1 shared topic

  7. 7
    Rich Tales—

    SubstackEvery two weeks · last post 12 days ago

    Actionable thinking strategies for curious minds. Weekly insights to help you think differently, act with intent, and live purposefully - in under 7 minutes. Join me as we discover Rich Tales that build a rich life.

    Likely audience: newsletter subscribers

    1 shared topic

  8. 8
    ksendurancetraining—

    SubstackEvery two weeks · last post 20 days ago

    Likely audience: endurance athletes

    1 shared topic

  9. 9
    Rust, Not Age—

    SubstackMonthly or less · last post 6 days ago

    Likely audience: people recovering from injury

    1 shared topic

  10. 10
    The Speedhiman Substack—

    SubstackMonthly or less · last post Sep 3, 2026

    A newsletter from elite ultra marathoner Ben Dhiman, following his training, racing, and rambling mind.

    Likely audience: ultrarunners

    1 shared topic

  11. 11
    Aikido: Art for Life—

    Substacklast post Jul 9, 2026

    Likely audience: Aikido practitioners

    1 shared topic

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