Senior citizen aged 70 completes 20 marathons

Yu Yonghe runs in marathon held in Shanghai on Dec 12, 2012. [Photo provided to chinadaily.com.cn]

"Long-distance running requires perseverance and good physical strength," he said in the report. "Initially, physical strength was a challenge, but my perseverance conquered it."

He has also received support and encouragement from his family members.

Yu's 21-year-old granddaughter made a documentary on him and it won lots of praise on the internet.