Scotland's Callum Hawkins wins Great Scottish Run men's race
Betsy Saina breaks course record to win Great Scottish Run women's race
Shadrak Korir and Viola Jepchumba from Kenya win Cardiff Half Marathon
Cardiff Half Marathon
Tanni Grey-Thompson
11-time Paralympic champion on BBC One Wales
Today really helps put Wales and Cardiff on the map for athletics.
It is a beautiful course. The road quality is good and it is protected. It is quite a fast finish and when the crowds come out that helps."
Cardiff Half Marathon
The wheelchair race is under way in Cardiff.
Stay with us for updates.
Image source, BBC Sport
BBC Sport Wales
TV presenter Gethin Jones on BBC One Wales: "I am running today. I was here in an official capacity last year and got so much grief I thought I would have to run this year.
"I love Cardiff for many reasons but today for the fact that it is flat!"
Here are some of the elite runners competing in the Cardiff Half Marathon today..
MEN
WOMEN
Cardiff Half Marathon
After some last minute advice?
Here's Wales' own former marathon world record holder Steve Jones giving you some last minute tips.
If you can't view this video click here, external.
#GetInspired
For some this will be a one-off event, but for others it's the end of an action-packed year of fundraising...
Image source, Jessica SimmonsYou can get involved on Twitter at #getinspired, external, on the Get Inspired Facebook page or by emailing getinspired@bbc.co.uk
Cardiff half marathon
The weather gods have been kind on Cardiff today.
Clear Welsh sunshine but nice and cool. Perfect weather for running.
Enjoy it everyone!
Cardiff Half Marathon
Live coverage of the race in Cardiff is starting right now on BBC One Wales.
Presenter Jason Mohammad is joined by Olympic sprinter Christian Malcolm plus presenter and marathon runner Lowri Morgan, with commentary by Stuart Storey and Baroness Tanni Grey-Thompson.
If you're outside of Wales and want to watch out for a family member or mate from the office, you can watch the TV coverage at the top of this page.
#getinspired
As ever we'll be taking you through everything going on today but we'd also love to hear from you.
Whether you'd like to wish someone good luck, send us a picture from out on the course or celebrate with a finish line selfie.
You can get involved on Twitter at #getinspired, external, on the Get Inspired Facebook page or by emailing getinspired@bbc.co.uk
So here's how it pans out...
Got that? Right, let's get going.
Great Scottish Run
As well as Cardiff, Glasgow will be packed with runners today for two events as over 300,000 people take part in Scotland's largest mass participation running event.
A 10K gets us under way at 09:45 BST before the Great Scottish Run, another half marathon, begins at 11:30.
The fun runners will take centre stage but we will also bring you updates of the world famous elite runners taking part in Wales and Scotland races today.
Of course, we don't encourage any childish behaviour such as this...
Cardiff Half Marathon
First to get under way this morning is the Cardiff Half Marathon.
Wales' largest participation event with a record 25,000 adults registered for events across the weekend.
Today is the the big one when 22,000 people will run 13.1 miles through the city.
We've been spoilt for sporting action in 2016 and today is no different, not one but two events for you.
Thousands of people, across two of the UK's major cities will be running for a host of different reasons in the Cardiff Half Marathon and the Great Scottish Run.
We're here to bring you all of the action but most importantly celebrate the achievements of people running for reasons personal to them.
Stay with us for the ups, the downs, the emotion and the excitement.