The most common and most likely answer to this crossword clue is the 6 letter word INLAND
I've seen this crossword clue in The Daily Telegraph
I
N
L
A
N
D
More clues leading to the result INLAND
- Popular win away from sea
- Abandon north of country for interior
- Home country’s far from the sea
- Popular loch also away from the coast
- Popular guy touring North, away from the sea
- You should set down in lake and away from the sea
- California, Florida and Oregon are not Indiana, Louisiana and North Dakota
- Popular site away from coast
Buddy explains!

The straight part
We know that "away from the sea" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case away from the sea = inland.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does INLAND mean?
INLAND noun- The interior part of a country.
- Within the land; relatively remote from the ocean or from open water; interior
- Limited to the land, or to inland routes; within the seashore boundary; not passing on, or over, the sea
- Confined to a country or state; domestic; not foreign.
- Into, or towards, the interior of the land, away from the coast.