Munnar is about 80 km from the ocean.
If you're driving to a town near the beach or coastline, you could try Ernakulam.
How far is Miami from the ocean
How far is Lake Tahoe from the ocean
How far is Morgantown from the ocean
How far is Eureka, CA from the ocean
How far is Myrtle Beach from the ocean
How far is Princeville from the ocean
How far is Newport from the ocean
How far is Coral Gables from the ocean
How far is Bar Harbor from the ocean
How far is Vientiane from the ocean