Canary Wharf's streets turned scarlet as hundreds of runners pounded the tarmac in aid of the British Heart Foundation.
Following a warm up in Canada Square Park the joggers did 1k laps of the estate up to a maximum of 10.
Trinity Mirror producers Steve Farrugia and Matt Osborn took part in this year's event, seeing it as an opportunity to boost their personal health while raising cash for the charity.
Steve said: "I've never been a runner, but this year I've been on a bit of a fitness drive.
"I saw completing 10k in the Canary Wharf Jog as a great opportunity to achieve a major goal, while also raising money for a good cause.
"The run was better than I had expected. Matt and I stuck together throughout so we could use each other as motivation.
“When you're walking around the Wharf, you don't notice the slight inclines on the road but you definitely do when you've been running for the best part of an hour.
“I don't know what feels better – crossing that finish line, or that we have raised £555 between us.
“It has definitely been worth the pain. I might even consider doing it again next year.”
Matt said: “The BHF is a great charity and has helped a number of my family members.
“I also wanted to do this to challenge myself after a chest operation last year, in a way to prove and kick start my fitness again.
“The run itself was tough but very enjoyable as my running partner Steve kept me going throughout.
“The Canary Wharf winds did not seem to help but provided some cool air on a lovely evening. The event as a whole was great fun and is for an amazing cause, I would recommend it to anyone, even if you walk jog or run.”