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MULTIDAYRUNNING
Fixed-Distance

Extremo Sul Ultramarathon

A non-stop 226 km crossing of Brazil's immense southern beach from Chuí to Cassino, with only 130 m of climb but a 52-hour limit.

Official WebsiteBack to Events

Event dates, entry rules, qualification standards, and course details can change. Always verify current information on the official event website before registering or booking travel.

Event Overview

Listed edition overview
DateNov 20-22, 2026
LocationChuí to Cassino, Rio Grande do Sul, Brazil
FormatFixed-Distance
TerrainMixed
RegionSouth America
Distance226 km
Course modelPoint-to-point
Elevation gain130 m
Cutoff52 hours
Start11:00 AM Friday
Field sizeLimited to 100 entries
Highlights226 km Beach Crossing, World's Longest Beach

Course & Terrain

Linear south-to-north beach crossing between Chuí and Cassino, supported by six intermediate bases and two drop-bag points.

Entry & Logistics

Listed qualification and support details
Registration and feesCheck the official event website for current availability, deadlines, prices, taxes, and refund terms.

Why This Race Matters

Extremo Sul Ultramarathon is a useful reference point for runners comparing long fixed-distance ultras that still unfold over multiple days. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.

Planning Notes

  • Prepare for sleep decisions, weather swings, and aid-station discipline. The distance is only one part of a multi-day fixed-distance race.
  • The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.

Verification & Sources

Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated August 19, 2026. Organizers can revise details after review.

  1. Official Extremo Sul event page and rules — https://horizontes.pt/en/extremo-sul/
  2. Multiday Running event directory review scope: August 19, 2026.