Life & fun · alternatives · 2026

24 alternatives to 21K Run Trainer

Half marathon running guide

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. 21K Run Trainer launched in 2018; newer entries below may have overtaken it.

1. 1
   Run10K Trainer▲128

   Smart training plans for 10K runners

   2024 · run10ktrainer.com · its alternatives →

2. 2
   Run_Coach_Bot▲57

   Training plans for marathon, half marathon, 10k in Telegram

   2022 · t.me · its alternatives →

3. 3
   MyTrainingPlan▲142

   Stay motivated, run faster

   2024 · mytrainingplan.ai · its alternatives →

4. 4
   Runable▲77

   Spend more time running

   2021 · runable.app · its alternatives →

5. 5
   MoonRun▲58

   Portable cardio trainer for home workout with running apps

   2020 · moonrun.com · its alternatives →

6. 6
   Mobiefit RUN▲94

   From unfit to mobiefit

   2015 · firstrunning.com · its alternatives →

7. 7
   5k Running Training Plan▲7

   Program to Train for 5k Run

   2018 · apps.apple.com · its alternatives →

8. 8
   Pace To Race▲68

   Giving you r a virtual pacer and trainer in your pocket.

   2019 · pacetorace.com · its alternatives →

9. 9
   Run - your smart tracker▲168

   Start your journey to an active life

   2023 · apps.apple.com · its alternatives →

10. 10
    Cadoo▲149

    Your running drill coach that motivates you with money

    2021 · cadoo.io · its alternatives →

11. 11
    Smart Runner▲94

    Ran my first marathon. Didn’t want to keep paying so much for Runna. So I built a running coach app, and then kept improving it more and more, i think it’s pretty good now. Give it a try and share your thoughts.

    Jun 2026 · runnerapp.pro · its alternatives →

12. 12
    Cadence Running▲95

    Up your running game with a new virtual coach!

    2023 · its alternatives →

13. 13
    RunMate▲90

    Easy run planning for Notion

    2023 · tomasvysny.gumroad.com · its alternatives →

14. 14
    Runnie▲13

    Let people safely discover running

    2025 · apps.apple.com · its alternatives →

15. 15
    Runology▲101

    The first AI powered sport app that analyses your running.

    2024 · runology.app · its alternatives →

16. 16
    Runo 2.0▲132

    I built Runo after years of inconsistent marathon training. GPS watches tell you your pace AFTER it's too late. So I made a simple metronome that plays a beat at your target cadence (steps per minute). New in 2.0: Apple Watch haptics (run to the beat without headphones), Strava sync, and social features. 4.7 on App Store, 10k+ runners. Would love feedback from the HN community.

    Jan 2026 · runoapp.com · its alternatives →

17. 17
    bform running▲79

    Find your best running form

    2020 · its alternatives →

18. 18
    AI Endurance▲68

    Personalized training for runners, cyclists and triathletes

    2020 · aiendurance.com · its alternatives →

19. 19
    running planner▲23

    The product helps you preparing a marathon

    2024 · notion.so · its alternatives →

20. 20
    Flyrun▲75

    Running tracker that analyzes your running technique.

    2020 · play.google.com · its alternatives →

21. 21
    RunTrainerBasic▲2

    Get moving with 5km - 10km running trainer.

    2019 · its alternatives →

22. 22
    RunHQ▲55

    The All-In-One Operating System for Runners

    2025 · getrunhq.com · its alternatives →

23. 23
    Run Plan - AI Running Coach▲8

    AI Running Coach, connected to Strava and Garmin

    Jan 2026 · run-plan.com · its alternatives →

24. 24
    Running Workouts by Weav Music▲104

    Coaching & music responding to your performance in real time

    2020 · apps.apple.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →