Brno is about 450 km from the ocean.
If you're driving to a town near the beach or coastline, you could try Omisalj.
How far is Las Cruces from the ocean
How far is West Yellowstone from the ocean
How far is Salem from the ocean
How far is Duluth, MN from the ocean
How far is Girdwood from the ocean
How far is Estes Park from the ocean
How far is Seattle from the ocean
How far is Carmel By the Sea from the ocean
How far is San Diego from the ocean
How far is Da Lat from the ocean