He really IS a Man Of Steel! Henry Cavill works up a sweat as he takes part in gruelling uphill fundraising run for Royal Marines in Gibraltar

Superman commitments may well have been put to the side on Saturday morning, but Henry Cavill’s latest public appearance was no less heroic as worked up a sweat on The Rock Run in Gibraltar.

British star Cavill, 31, was joined by brother Nik Cavill – a Lieutenant Colonel in the Royal Marines – for the 350th anniversary run, which sees sponsored participants undertake an exhausting five kilometre uphill climb for charity.

Sporting the fundraising initiative’s luminous yellow T-shirt and black shorts, the actor, currently working on forthcoming epic Batman V Superman: Dawn Of Justice, ran alongside his brother and 40 other competitors as part of the fundraising initiative, which generates money for the Royal Marines.

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A real life Man of Steel: Henry Cavill, wearing the number three, took part in the Gibraltar Rock Run on Saturday

Cavill, an ambassador for the Royal Marines Charitable Trust Fund, had previously admitted he was looking forward to the picturesque run, close to Gibraltar’s sweeping coastline.

‘I will remember this day fondly and probably with a little bit of physical discomfort, which only seems fitting considering what this day represents,’ he said.

Event organiser Alan Hardy admitted that he was delighted to see the actor take part and hoped he would enjoy ‘what Gibraltar has to offer.’

IN the mix: The Superman hunk was helping raise money for the Royal Marines along with 40 other competitors

The line-up: Henry looked confident and ready for action as he took his place at the front of the start line

Old rope: The Hollywood heartthrob looked ultra cool and ready for action in his designer sunglasses

Come on Henry! The British actor held his own during the exhausting five kilometre run close to Gibraltar’s sweeping coastline

‘Gibraltar will always hold a special place in Royal Marines history,’ he added. ‘We have organised a fantastic weekend of fun and celebrations for participants and the locals of Gibraltar.’

The event precedes a Memorial Parade, to take place on Sunday, followed by cocktail reception attended by the run’s 30 top fundraisers.

Meanwhile filming is scheduled to continue on Batman V Superman in Detroit through the end of summer, before moving to Chicago in October, with the movie scheduled for a March 25, 2016 release.

Mr Popular: The Tudors star posed for lots of selfies with scores of eager fans prior to the event

Uphill battle: The group, consisting of Royal Marine fundraiser, undertook the arduous challenge as part of the 350th anniversary celebration

Here he comes: Man Of Steel star Henry (centre) shows no sign of slowing

Here to help: The actor, who was joined by brother Nik on the day, is an ambassador for the Royal Marines Charitable Trust Fund

Thoughtful: Henry looked serious as he explained his role in the epic race during an interview

Michael Uslan, the film’s producer, has revealed that Bruce Wayne, aka Batman, played by Oscar winner Ben Affleck, will be in his 40s in the dark tale.

While many fans were in an uproar over the Argo star being cast in the role, Ben recently opened up to Entertainment Weekly about the criticism.

‘Everyone’s entitled to their opinion,’ he said before adding, ‘I wouldn’t have taken the part if I didn’t trust my instincts in terms of the filmmaking.’

Here we go: Henry worked up a sweat during the uphill climb. A memorial Parade and cocktail reception attended by the run’s 30 top fundraisers will follow on Sunday