Prince Harry has thanked those preparing to run the London Marathon for the Heads Together campaign.
The father-to-be appeared in a video sent across the group's social media channels, acknowledging how 'tough' the marathon would be and thanking those choosing to support the organisation he co-founded with the Duke and Duchess of Cambridge.
Prince Harry, 34, who has admitted to battling numerous breakdowns while coming to terms with his mother's death, has been passionate about breaking the stigma surrounding mental health.
The royal has visited the race for the past two years, although it is unknown whether he will watch from home this year, as his wife the Duchess of Sussex, 37, is due to give birth any day now.
Prince Harry told runners of the London Marathon who are taking part in #TeamHeadsTogether that the run would be 'tough' but thanked them for choosing to raise awareness for mental health. The video, pictured, was released across the Heads Together social media channels
The 'Heads Together' initiative was launched in 2016, and aims to change the national conversation on mental well being in partnership with various mental health charities.
Prince Harry has long been vocal about his support for the topic, and it was recently announced he was working on a documentary with Oprah to help break the stigma.
In a video posted across the royal initiative's social channels, including Instagram, Twitter and Facebook, Prince Harry thanked runners for their support of the cause.
Harry wished the runners for this year's marathon the very best of luck, telling the camera: 'It's going to be tough but you are all running to bring greater awareness to such an important cause.
Prince Harry continued to be vocal about his support for breaking stigma around mental health, visiting runners training for the London Marathon in 2017
Prince William, Kate Middleton and Prince Harry launched Heads Together in April 2016 to help raise awareness and spark a conversation surronding mental well being
He went on: 'It is vital that we continue to smash the stigma surrounding mental health and get more people talking about it.
'So thank you for choosing heads together and good luck.'
In 2017, Prince Harry was joined by brother Prince William and sister-in-law Kate Middleton in a humorous video asking for runners to compete in the marathon for the royal campaign.
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