Grimsey's Marathon Coaching
About Trent Grimsey
Your premier Marathon Swimming Coach! Dive into a world of endurance, technique, and passion for the open water. Whether you're a seasoned swimmer looking to refine your skills or a newcomer eager to explore the exhilarating realm of marathon swimming, Trent is here to guide you every stroke of the way. Join us to discover training programs, expert tips, and inspiring stories that will help you reach your swimming goals. Let's make waves together!
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Swimming Career
- Australian Swim Team Member (2006 to 2012)
​- Five time Australian Open Water Swimming Champion
- English Channel World Record Holder (2012)
- Capri to Napoli World Record Holder (2012, Italy)
- World Championship Silver Medalist (2009, Italy)
- FINA Grand Prix Marathon Swimming Champion (2012)
- Three time King of the Sea Champion (2008, 2009 & 2011, Brazil)
- International Marathon Swimming Hall of Fame Inductee (2018)
- Australian Marathon Swimming Hall of Fame Inductee (2020)
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Coaching Career
​Between 2015 and 2021 coached and mentored over 50 successful English Channel solo swimmers from around the world. Many who went on to complete 'Oceans 7' and 'Triple Crowns'.​
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Business Career
Founded Grimsey's Aquatics in 2019, managing aquatic facilities in North Queensland. Managing eight facilities and employing over 70 staff.
Our Services
1
One on One Coaching
World class knowledge and expertise. We have a concentrated and focused approach with process driven and measurable results. For swimmers wanting real experience and confidence heading into their next crossing/event.
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Requirements:
- Time frame required before crossing/event is a minimum of 12 months.
- Must be 100% committed
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Includes:
- Detailed training plan delivered through Training Peaks​​
- Each individual swim session
- Stepping stone approach
- Measurable results to track progress
- Personal product recommendations
- Weekly calls
- Unlimited emails
- Advice on cold water conditioning, adapting to different conditions and scenarios, dry-land and flexibility​
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Investment:
$500 AUD per month
2
Swim Camps
Located in Woolgoolga (recently awarded the best beach on mainland Australia in 2025). Situated halfway between Brisbane and Sydney. These camps are specifically designed for anyone wanting to take part in an open water swimming marathon. We'll be conducting several camps each year.
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Requirements:
- Must have completed the appropriate training to undertake such camp​
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Includes:
- Water safety
- Four day camp
- Exposure to night swimming
- Exposure to swimming next to a boat
- Exposure to swimming in different conditions
- Different swim courses
- Qualifying swim
- Nutritional advice
- Swim advice and recommendations
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​Investment:
$1,000 AUD per swimmer
3
Qualifying Swims
It's a prerequisite for many marathon swims to have completed an offical qualifying swim before the event. These are either a set distance or set number of hours. We can supervise and facilitate your qualifying swim.
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Requirements:
​- Must have completed the appropriate training to undertake such swim.
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Includes:
- Water safety
- Swim course
- Swim certification
- Post swim advice and recommendations
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Investment:
When being conducted in Woolgoolga $140 AUD per hour
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When being conducted in another location - price on request.
Ideal for swimmers wanting to take part in any of the following:
Australian Marathon Swims
Triple Crown
Ocean Sevens
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Rottnest Channel Swim, Cottesloe Beach, Perth, to Rottnest Island in Western Australia, 19.7kms
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Derwent River Big Marathon Swim, Derwent River in Tasmania, 34kms
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Port to Pub Marathon Swim, North Fremantle to Rottnest Island, Western Australia 25km
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Palm Beach to Shelly Beach Marathon Swim, Palm Beach in Sydney’s Northern Beaches to Shelly Beach, Manly, 27kms
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Swim Around Keppel, Great Keppel Island in The Keppels, Queensland, 20kms
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Swim the Gold Coast, Coolangatta Beach to Surfers Paradise, 21.5kms​
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The English Channel: between England and France, 33kms
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The Catalina Channel: between Santa Catalina Island and Los Angeles, 32.3kms
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Swim Around Manhattan: circumnavigation of Manhattan Island, New York City, 46kms
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The North Channel: between Ireland and Scotland, 34.5kms
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The Cook Strait: between New Zealand’s North and South Islands, 22.5kms
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The MolokaÊ»i Channel (also known as the Kaiwi Channel): between Moloka’i and O’ahu, 42kms
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The English Channel: between England and France, 33kms
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The Catalina Channel: between Santa Catalina Island and Los Angeles, 32.3kms
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The Tsugaru Strait: between the Japanese islands of Honshu and Hokkaido, 19.5kms
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The Strait of Gibraltar: between Spain and Morocco, 14.4kms
Contact Us
Ignite the extraordinary within you - this is step one!
