| Gas Station | Regular | Plus | Premium | Diesel |
 | Chevron
38801 Overseas Hwy, Big Pine Key, FL 33043
Get Directions | $3.659 | N/A | $4.019 | $4.109 |
 | Unbranded
30662 Overseas Hwy, Big Pine Key, FL 33043
Get Directions | $3.699 | N/A | N/A | N/A |
 | Shell
29900 Overseas Hwy, Big Pine Key, FL 33043
Get Directions | $3.739 | N/A | N/A | $3.999 |
| Shell
27300 Overseas Hwy, Summerland Key, FL 33042
Get Directions | $3.739 | N/A | N/A | N/A |
| Shell
24838 Overseas Hwy, Summerland Key, FL 33042
Get Directions | $3.739 | $3.959 | N/A | N/A |
 | Mobil
13155 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.499
Lowest Price | N/A | N/A | N/A |
| Chevron
3896 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.559 | N/A | N/A | $4.099 |
| Chevron
13847 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.559 | N/A | $3.859 | $4.059 |
 | Circle K
11100 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.499 | $3.699 | $3.859 | N/A |
 | Citgo
6203 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.559 | $3.689
Lowest Price | N/A | $3.929 |
| Unbranded
5515 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.539 | $3.799 | $3.999 | $3.879
Lowest Price |
| Mobil
1415 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.579 | N/A | N/A | $3.999 |
| Circle K
13100 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.499 | N/A | $3.809
Lowest Price | N/A |
 | Valero
7301 Overseas Hwy, Marathon, FL 33050
Get Directions | $3.559 | N/A | $3.999 | N/A |
| Mobil
3228 Flagler Ave, Key West, FL 33040
Get Directions | $3.789 | N/A | N/A | $3.999 |
| Chevron
1126 Truman Ave, Key West, FL 33040
Get Directions | $3.789 | N/A | N/A | N/A |
| Shell
5991 Us Highway 1, Key West, FL 33040
Get Directions | $3.799 | N/A | N/A | N/A |
| Chevron
5220 Us Highway 1, Key West, FL 33040
Get Directions | $3.789 | N/A | $4.159 | N/A |
| Mobil
451 Us Highway 1, Key West, FL 33040
Get Directions | $3.739 | N/A | N/A | $3.989 |
| Circle K
1190 Overseas Hwy, Key West, FL 33040
Get Directions | $3.719 | $3.929 | N/A | $4.019 |