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In the field guide

21km

21km.lol

21km.lol is a runner-sponsorship platform where sponsors contribute money to support a real runner, Aleks, in the Sparkassen Phoenix Half Marathon in Dortmund. The top 11 sponsors by cumulative contribution get their logos printed on Aleks's real race shirt, with the top sponsor featured on the front and others on the back.

The product, beyond the pitch

Editorially reviewed · Sources checked Sep 30, 2026

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A good fit for

  • Businesses and private persons interested in sponsoring a runner for brand visibility and engagement during a half marathon event.

Know the limitations

  • No refunds are given if a sponsor is outbid or finishes outside the top 11; payments are cumulative and non-refundable except in limited cases.

What you can do

  • Companies or individuals seeking to promote their brand by sponsoring a runner in a half marathon event.
  • Sponsors wanting to gain social media exposure through shareable graphics and potential social mentions related to the race.

Features

  • Live ranking updates showing sponsor positions and shirt placement before payment.
  • Secure payment processing via Stripe Checkout in EUR.
  • Sponsor logos appear on a physical race shirt worn by the runner during the half marathon.

Integrations

Not confirmed yet.

Platforms & data export

Not confirmed yet.

21km pricing

No plans recorded yet.

THE COST FOR YOUR TEAM

Go beyond the starting price.

Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.

Known monthly subtotal

$0.00/month

1 of 1 tools could not be priced with these inputs, so this is not the full cost.

Plan costs based on your requirements
Tool / planMonthlyPer yearWhat this assumes
21km logo21kmNo pricing recorded yet. Check the official site, or ask the owner to add it.

A practical workflow

  1. Sponsor the runner by choosing a contribution and paying via Stripe; sponsorship starts at €1 and adds to your total.
  2. Move up the ranking by increasing your sponsorship amount to improve your shirt placement; the new position is shown before payment.
  3. The top 11 sponsors appear on the physical race shirt worn by Aleks during the half marathon on 3 Oct 2026 in Dortmund.

Based on the sources below. Editorial review does not imply hands-on product testing.

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What changed

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Sources & research

How we research, calculate costs, and distinguish sponsorship