Marathon makes it easy to write, run and manage your Swift scripts 🏃


Travis status Swift Package Manager Twitter: @johnsundell

Welcome to Marathon, a command line tool that makes it easy to write, run and manage your Swift scripts. It's powered by the Swift Package Manager and requires no modification to your existing scripts or dependency packages.


🐣 Create scripts

$ marathon create helloWorld "import Foundation; print(\"Hello world\")"

🏃‍♀️ Run scripts

$ marathon run helloWorld
> Hello world

📦 Hassle free dependency management. Simply add a package...

$ marathon add

...and use it without any additional work

import Files

for file in try Folder(path: "MyFolder").files {

🚀 Update all of your scripting dependencies with a single call

$ marathon update

Edit, run & debug your scripts using Xcode...

$ marathon edit helloWorld

...or in your favorite text editor

$ marathon edit helloWorld --no-xcode

🌍 Run remote scripts directly from a Git repository...

$ marathon run

...using only a GitHub username & repository name:

$ marathon run johnsundell/testdrive

💻 Install scripts as binaries and run them independently from anywhere...

$ marathon install helloWorld
$ helloWorld
> Hello world can even install remote scripts (+ their dependencies) from a URL:

$ marathon install
$ cd myImages
$ addSuffix "@2x"
> Added suffix "@2x" to 15 files

...or from a GitHub repository:

$ marathon install johnsundell/testdrive
$ testdrive

👪 Share your scripts with your team and automatically install their dependencies...

import Files // marathon:


...or specify your dependencies using a Marathonfile:

$ echo "" > Marathonfile


On macOS

Using Make (recommended):

$ git clone
$ cd Marathon
$ make

Using the Swift Package Manager:

$ git clone
$ cd Marathon
$ swift build -c release -Xswiftc -static-stdlib
$ cp -f .build/release/Marathon /usr/local/bin/marathon

Using Mint:

$ mint run JohnSundell/Marathon

Using Homebrew (not recommended, due to slow update cycle):

brew install marathon-swift

On Linux

$ git clone
$ cd Marathon
$ swift build -c release
$ cp -f .build/release/Marathon /usr/local/bin/marathon

If you encounter a permissions failure while installing, you may need to prepend sudo to the commands. To update Marathon, simply repeat any of the above two series of commands, except cloning the repo.


Marathon requires the following to be installed on your system:

  • Swift 4.1 or later (bundled with Xcode 9.3 or later)
  • Git
  • Xcode (if you want to edit scripts using it)


Check out this repository for a few example Swift scripts that you can run using Marathon.

Specifying dependencies inline

Scripting usually involves using 3rd party frameworks to get your job done, and Marathon provides an easy way to define such dependencies right when you are importing them in your script, using a simple comment syntax:

import Files // marathon:
import Unbox // marathon:

Specifying your dependencies ensures that they will always be installed by Marathon before your script is run, edited or installed - making it super easy to share scripts with your friends, team or the wider community. All you have to do is share the script file, and Marathon takes care of the rest!

Using a Marathonfile

If you prefer to keep your dependency declarations separate, you can create a Marathonfile in the same folder as your script. This file is simply a new line separated list of URLs pointing to either:

  • The URL to a git repository of a local or remote package to install before running your script.
  • The path to another script that should be linked to your script before running it.

Here is an example of a Marathonfile:

Shell autocomplete

Marathon includes autocomplete for the zsh and fish shells (PRs adding support for other shells is more than welcome!). To enable it, do the following:

  • zsh:

    • Add the line fpath=(~/.marathon/ShellAutocomplete/zsh $fpath) to your ~/.zshrc file.
    • Add the line autoload -Uz compinit && compinit -i to your ~/.zshrc file if it doesn't already contain it.
    • Restart your terminal.
  • fish:

    • cp -f ~/.marathon/ShellAutocomplete/fish/ ~/.config/fish/completions

You can now type marathon r and have it be autocompleted to marathon run 🎉

Help, feedback or suggestions?

  • Run $ marathon help to display help for the tool itself or for any specific command.
  • Append --verbose to any command to make Marathon output everything it's doing, for debugging purposes.
  • Open an issue if you need help, if you found a bug, or if you want to discuss a feature request.
  • Open a PR if you want to make some change to Marathon.
  • Contact @johnsundell on Twitter for discussions, news & announcements about Marathon.


  • Swift Tools 4.2.0
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Last updated: Wed Mar 29 2023 05:03:00 GMT-0500 (GMT-05:00)