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© 2026 raceindex.org. Derived figures use a published methodology; modelled costs are labelled.

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The Filthy 50

The Filthy 50

Lanesboro · OCT 2026 · Gravel sportive

Data current as of 2026-06-26

Typical ride-day conditions

Around event day in Lanesboro: 12°C typical, 2.2 mm rain, 21 km/h wind. (10-year Open-Meteo average.)

Routes (2)

The Filthy 50 · Medio Fondo

81 km · 975 m climbing

Entry fee not published

Pretty Filthy 25 · Piccolo Fondo

40 km · 579 m climbing

Entry fee not published

Common questions

What routes does The Filthy 50 offer?

The Filthy 50 currently lists The Filthy 50 (81 km · 975 m climbing); Pretty Filthy 25 (40 km · 579 m climbing) on raceindex.org.

How much climbing is there at The Filthy 50?

Recorded climbing by route: The Filthy 50: 975 m; Pretty Filthy 25: 579 m.

Where can I verify The Filthy 50 details?

Use the linked official event website alongside the raceindex.org provenance and methodology notes shown on this page.

Official event website ↗

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of 2026-06-26.

Derived numbers use cycling-scoring-methodology-v1.0.

Sources used on this page (2)

Layer E archive-api.open-meteo.com
Layer A the-filthy.com · fetched 2026-06-26

Read the full methodology →

The Filthy 50 — routes, climbing & details · raceindex.org