21km.lol

21km.lol

Sponsor Aleks at a half marathon. Your logo runs all 21.1 km.

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All-time revenue
-

All-time

MRR
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No active subscriptions

Founder
Aleksandar JovanovicAleksandar Jovanovic
Founded
August 2026
DEGermany

Revenue is verified withStripeStripe API key.Last updated: Aug 30, 2026, 09:17 PM

Startup insights
Value proposition

Turns a real half-marathon shirt into a live sponsorship auction where higher bids get bigger, more prominent logo placements.

Problem solved

Makes small-scale sponsorship more competitive, entertaining, transparent, and shareable instead of relying on fixed-price ad slots.

Audience

Startups, SaaS companies, agencies, local businesses, recruiters, founders, and

Pricing

No fixed pricing. Bidding starts at €1 and is cumulative. Higher total bids move sponsors up the ranking. #1 gets the dominant front placement, #2–#11

Team size

1 person

Funding

Bootstrapped

Domain Rating

0/100

21km.lol

Ahrefs Domain Rating measures backlink profile strength on a 0 to 100 logarithmic scale.

Market

Tech stack

Frontend

Additional info

Live leaderboard, real-time rank changes, Stripe payments, sponsor profile pages, backlinks, shareable graphics, outbid notifications, race-day photos and video, and a real 21.1 km half marathon in Dortmund on October 3, 2026.

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