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Routes USA FloridaMarathon
Grassy Key
Marathon, Florida, USA
Marathon, Florida, USA

Grassy Key

Length7.2 mi
Elev. Gain170.6 ft
Est. Steps17000
Scenic views
Beach
No shade
Created by Mitch

Grassy Key Introduction

Grassy Key is a 7.2 mile (17,000-step) route located near Marathon, Florida, USA. This route has an elevation gain of about 170.6 ft and is rated as medium. Find the best walking trails near you in Pacer App.
This is a very bueatiful island but it’s hot and humid most of the time. Winter is the best time of the year. The least bugs and the mildest temperatures.
Last updated: Dec 1, 2025

Route Details

Length

7.2 mi

Elev. Gain

170.6 ft

Est. Steps

17000
Created by
Mitch
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