Tough times don't last. Tough people do. Ancient tales have formed the mythical symbolism of Koi fish. Koi are often admired for their endurance and perseverance in the face of adversity, as seen on this medal with the Koi fish leaping over the waterfall. Many people have overcome large obstacles in their lives; let the Koi fish be your symbol of survival, bravery and determination. Run or walk this virtual 5K, 10K. Just cover the distance on your own time before the end date.