How many miles of DNA are there in the human body?

Answer 1

Check this link which already answers your question. It's
2 x 10^13 meters, or roughly 12 billion miles

Answer 2

Each cell in the human body contains 46 chromosomes (or 46 DNA molecules). If you lined up those DNA molecules end to end, a single cell would contain six feet of DNA! If the human body is made of about 100 trillion cells, each of which contains six feet of DNA, our bodies contain more than a billion miles of DNA!

pass on the good Karma!