Word help -- area sizes!

[UngainlyTitan]

Word help! I'm making standard area sizes for exploration challenges.

Immediate (up to 100' or so around the party)

Local (up to 3 miles)

XXXXX (up to 10 miles)

Region (the Region [a defined term] the party is travelling across)

What is XXXXXX? An area about 10 miles across?

I would inclined to go with tactical are for immediate

Immediate for up to 3 miles

local for up to 10 mines and

finally region