Contact Grassy Key Outpost

Grill and Island Market

58152 Overseas Highway
Mile Marker 58 Oceanside
Grassy Key/Marathon, FL 33050
T: 305.743.7373


Open Daily
Dining 8am-9pm | Market ’til 10pm

Dining service:
Breakfast 8am-11am | Lunch 11am-5:30pm
Dinner 5:30-9pm
Please note: We do not take reservations
(but we can always find you a table!)

If you would like to book a group party please contact us.

Contact Us

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Getting here

We are located on the island Grassy Key, at Mile Marker 58, Oceanside near the heart of Marathon.

GPS Coordinates:

N 24° 45′ 34.21″ W 80° 57′ 15.9″

Photo credits: Home page: Some of the black and white photos are courtesy of FL Keys Public Library. From the collections of Erma Stouts Scrapbook.