nowfound

Life & fun · June 12, 2025

I built a tool to show how people trained for your goal marathon time

The idea for this came from wanting something like Naviance (let’s you see the GPA and test scores of admitted students for a given college) for marathon running. In general, we’re working on making your running data more useful, and our newest tool, called, "Marathon Cohorts," gives you stats about runners who finished a marathon in a given time. You pick a marathon time / cohort and then look at - Weekly training mileage - Fastest 5k, 10k, half marathon, and 30k during training. You can adjust the cohorts to see how these values change as the marathon time gets slower / faster.…

I built a tool to show how people trained for your goal marathon time launched on June 12, 2025 with 6 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.

Visit getfast.ai ↗Alternatives

What it does

Kailo analyzes your runs to predict your marathon time within minutes of your actual finish. Data-backed training insights trusted by thousands of runners.

In the maker’s words, at launch

The idea for this came from wanting something like Naviance (let’s you see the GPA and test scores of admitted students for a given college) for marathon running. In general, we’re working on making your running data more useful, and our newest tool, called, "Marathon Cohorts," gives you stats about runners who…

Does a similar job

all alternatives →
  • Ten years of running every day, visualized2025 · nodaysoff.run · ▲958

    Today marks ten years, 3653 consecutive days, of running at least one mile every day under the USRSA rules [1]. To celebrate, I built an interactive dashboard that turns a decade of GPX files into charts you can explore. Running has truly changed my life: I've made lifelong friends, explored beautiful places, and more importantly invested into my own health and fitness, which I'm starting to see the positive benefits as I get older. The stack is pretty simple: a NextJS app, with a Postgres database to keep all my running data, and all the stats are pre-computed and cached in Redis, so I…

  • Running Pace Calculator2025 · joincentury.app · ▲91

    Calculate your running pace, time & distance online

  • I made an app to help plan your Weekly Runs2023 · weeklyruns.web.app · ▲5

    Hello there, When I started training for the first marathon in my life, I download a 6 months training plan, printed it, pinned it to my fridge, and started circling each completed training day. Sadly, I would often get injured during my runs, which would lead to days or weeks without running, and a lot of changes to the plan I had printed. All running apps that I tried either forced me to follow their plan from the start (which I didn’t want to do because I was already in the middle of training) or made it extremely slow and difficult to add a custom plan. So I decided to create my own app,…

  • Time on Trails2024 · timeontrails.com · ▲116

    Visualize Your Route, and Plan Your Race Strategy

  • Runable2021 · runable.app · ▲77

    Spend more time running

  • Running Form Analysis App Dec 2025 · fruitfoxlu.github.io · ▲80

    Upload a short side-view clip, get actionable form feedback

More life & fun this month

the category →

Source: Show HN post ↗ · launch text quoted in part

Launched alongside, June 2025

the whole month →
  • IM
    I'm an airline pilot – I built interactive graphs/globes of my flights▲1,539

    Hey HN! Pilots everywhere are required to keep a logbook of all their flying hours, aircraft, airports, and so on. Since I track everything digitally (some people still just use paper logbooks!), I put together some data visualizations and a few 3D globes to show my flying history. This globe is probably my favourite so far: https://jameshard.ing/pilot/globes/all If you’ve got ideas for other graphs or ways to show this kind of data, I’d love to hear them!

    Life & fun · 2025 · jameshard.ing

  • Chronicle: Cursor for Slides▲1,212

    Stunning presentations with AI. No design skills required.

    AI · 2025 · chroniclehq.com

  • Bubble for native mobile apps (beta)▲1,026

    Build native mobile apps for iOS and Android without code.

    Dev tools · 2025 · bble.io

  • Twenty▲989

    Build your Enterprise CRM with an AI-friendly SDK

    Dev tools · 2025 · twenty.com

  • Pally - AI Relationship Management▲949

    All your connections, across all your socials.

    AI · 2025 · pally.com

  • Workout.cool – Open-source fitness coaching platform▲827

    I was the main contributor to workout.lol, an open-source fitness app to easily build a workout routine. The project had traction (1.4k GitHub stars, 95 forks, ~20K visits/month), but was eventually sold due to video licensing hurdles. The new owner stopped maintaining it, and the repo went abandoned. Over the next 9 months, I sent 15 emails to try to save it : no replies. Feature requests & issues were ignored. The community was left with a "broken" tool let's say. I couldn't just let it die So I built the new version from scratch with the same open-source spirit, but a better…

    Dev tools · 2025 · github.com