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About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Relay
  • 160.9 km
  • Key West
  • Event dates –
  • Open entry

KEYS100 Ultramarathon (Key Largo to Key West) Relay

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2027 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Official event website & entry ↗
Data current as of

Decision summary

KEYS100 Ultramarathon (Key Largo to Key West) Relay at a glance

Cut-off average pace
11:56/km

32:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.

Typical conditions
14/100

Historical race-date favourability, not a forecast

Evidence depth
36 verified facts

Source facts available

Route details

Known course facts at a glance

Methodology →

KEYS100 Ultramarathon (Key Largo to Key West) Relay has known course details for its relay race. The summary below keeps the focus on what is confirmed for the course.

Official distance
160.9 km
Scenery
Coastal, Waterfront, Island

Quick answers

What runners ask first

Where does the KEYS100 Ultramarathon (Key Largo to Key West) Relay route go?

The KEYS100 Ultramarathon (Key Largo to Key West) Relay route starts at 100-mile: Key Largo Community Park, Key Largo (5:30am Saturday). 50-mile: Marathon Garden Club, Marathon. 50K: Lower Keys Chamber of Commerce property, Big Pine Key (noon) and finishes at Higgs Beach, Key West, on the Atlantic Ocean (all distances finish here). Underfoot, expect pavement. It passes Overseas Highway (US Highway 1), Seven Mile Bridge, Long Key Bridge, Key Largo and Islamorada. Crosses 40-plus bridges across roughly 30 islands, including the iconic Seven Mile Bridge, with crystal-clear ocean views the entire way.

Race character

Scenery

  • Coastal
  • Waterfront
  • Island

Atmosphere

  • Destination
  • Scenic Tour
  • Nighttime

Entry, logistics and records

Records and field

Men's course record
9:07:27 (Space Coast Runners)

Entry requirements

Entry status
Open entry: The held registration model is open entry and this edition is not marked sold out.
Cut-off
32:00:00

Race day logistics

Race village
No
Medal
In-person awards ceremony held under a tent at the Higgs Beach finish.

Access and course status

Start
100-mile: Key Largo Community Park, Key Largo (5:30am Saturday). 50-mile: Marathon Garden Club, Marathon. 50K: Lower Keys Chamber of Commerce property, Big Pine Key (noon).
Finish
Higgs Beach, Key West, on the Atlantic Ocean (all distances finish here).

Course facts

Course type
Point To Point
Surface
Pavement
Landmarks
Overseas Highway (US Highway 1), Seven Mile Bridge, Long Key Bridge, Key Largo, Islamorada, Marathon, Big Pine Key, Atlantic Ocean, Florida Bay, Gulf of Mexico, Higgs Beach, Key West
Notable features
  • Crosses 40-plus bridges across roughly 30 islands, including the iconic Seven Mile Bridge, with crystal-clear ocean views the entire way. A crew-supported race with NO aid stations or water stops
  • each runner must provide a personal support crew. Intense heat and humidity are defining challenges. Created by Bob Becker to echo the heat and pavement of Badwater 135
  • There are no aid stations or water stops along the route
  • runners must be self-sufficient with their own support crew (two runners may share one crew if running together throughout)
  • Relay options: 100-mile team relay for up to 6 runners (Key Largo to Key West) and 50-mile team relay for up to 3 runners (Marathon to Key West). Unique, Keys-focused awards for relay teams

What are typical race-day conditions?

  • 26°CTypical temperature
  • 27 kphTypical wind
  • 4 mmTypical rainfall
  • 14Favourability /100
Typical conditions for the race date and locality, warmer than the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

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 .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (2)

Read the full methodology →