300 cities, one Sunday.
Mainline wanted to own running for a generation that doesn't watch the Olympics. We turned a brand activation into a global, member-owned ritual — and shipped it in nine days from brief to live, with zero paid media.
Illustrative scenario — a brief, a deadline, and the outcome we'd sign for. Not a delivered case.
The brief
Mainline had a strong product, a small but devoted community, and a budget that wouldn't move the needle in paid. The CMO had one ask: a cultural moment, before fall.
We had nine days from green-light.
The work
We built one thing: a single, shareable kit that turned any local runner into a chapter lead. Route maps generated from agents per-city. Posters, social tiles, t-shirt PDFs — all auto-localized to language, time and weather. A creator partner in each of the top 40 cities posted day-of with their own twist.
No media buy. The work travelled because it was useful, not because it was paid.
The result
312 cities lit up on the first Sunday. The brand got pickup in 27 outlets and a Vogue piece by Tuesday. CAC for the next month dropped 44% — without spending a cent more on acquisition.