var task1 = Task.Factory.StartNew(() =>
                        {
                            File.Copy(Path,NewName1, true);
                        });
var task2 = Task.Factory.StartNew(() =>
                        {
                            File.Copy(Path,NewName2, true);
                        });

public void ParallelCopy(string src, params string[] dsts)
 {
    Parallel.ForEach(dsts, new ParallelOptions(),
        dstOne =>
           {
              using (FileStream source = new FileStream(src, FileMode.Open, FileAccess.Read, FileShare.Read))

               using (FileStream destination = new FileStream(dstOne, FileMode.Create))
                        {
                            var buffer = new byte[4096];
                            int read;

                            while ((read = source.Read(buffer, 0, buffer.Length)) > 0)
                            {
                                destination.Write(buffer, 0, read);
                            }
                        }

                    });
            }

ParallelCopy(@"x:source.file", @"c:destination1.file", @"d:destination2.file");