Katherine Jenkins, No Boyfriend, Amazing Finish at the 2013 London Marathon...Bring Me to Life!

Wearing designer shades, diamond earrings, pink lipstick and a sign that said "For Dad," mezzo soprano Katherine Jenkins hardly even broke a sweat during the 2013 London Marathon.

The Welsh singer, 32, was running for Macmillan Cancer Care--in memory of her father Selwyn, who died from lung cancer when she was only 15.

Speaking before her 26.2-mile race, Katherine, who wore number 26688, explained her choice of charity.

"It's kind of a family charity," Jenkins said. "When my father was sick, I was 15. My sister was 13, and the Macmillan nurses came in to take care of him and help my mother. And ever since then we've tried to say thank you and do our little bit."

The Neath-born crossover star eventually finished with a time of 5 hours, 26 minutes and 8 seconds, crossing the finishing line just before 3:30 p.m. in London.

Running with her cousin Hannah, Jenkins had set their joint target at £20,000 ($30,494), and by the end of the marathon, the pair had tallied up £18,237.30 ($27,802.76).