The path of the spermatozoa to reach the egg is not a simple one. This path is divided into a phase in the male reproductive system and another in the female reproductive system.
In the case of the male, the sperm travel from the testicle to the urethra. When vaginal penetration occurs, the sperm continue their journey to the fallopian tubes. This is where the egg is found and the fastest and most capable sperm will fertilize it.