The presence of blood means that bleeding is occurring somewhere in the genito-urinary tract, like kidneys, ureters, the prostate gland, the bladder or the urethra.
Blood in urine is not normal and always warrants medical attention.
It can be a sign of low-grade infection (UTI), bladder or kidney stones, prostate enlargement, or it can be an early warning sign of a kidney cancer, ureteral cancer or even a bladder cancer.
Extreme physical activity like running, jogging can lead to blood in urine as a harmless, once time appearance.

See urologist!