David Esler, Chairman


The 5th of 6 children, David grew up on farms in NSW. An active child, afternoons and weekends were spent exploring paddocks, dams, haystacks and hills near home.



David's dad, Bill, was a local scout leader and David developed a keen interest in the boy scouts, participating as a cub than a scout. While living in Wagga Wagga, David then joined the Air Cadets, which then started an association with the military that lasted 18 years.



Enlisting into the Army Reserve at the young age of 17 while still a year 12 student, David took to the Army well. He was completing his combined recruit and employment training as an infantry rifleman in 1995. In 1996 he transferred to the Regular Army and trained as an armoured crewman, posting to Darwin at the end of 1996.



From 1996 until 2007 David worked in Darwin, Townsville, Toowoomba, Canberra, Seymor and Melbourne and deployed to East Timor as a team leader. He also retrained as an electronic warfare operator in 2000.



In 2007, transferring back to the army reserve having moved to Canberra, David worked part-time at the Defence Signals Directorate at Russell Offices. In 2008 he posted to the Special Operations Command and volunteered for a tour to Afghanistan over Christmas 2009 - 2010. Further trips followed over Christmas 2010 - 2011 and a summer tour in 2012. Over his Afghanistan tours, David was embedded with special operations teams forward-positioned with snipers and command elements and responsible for the electronic targeting of enemy combatants and providing real-time threat assessments of enemy movements.



Back home, now in Brisbane, over 2012 to 2014. David worked for a property developer at the Gold Coast. In 2014 he started a business with two partners which has now grown to be a successful property development and marketing company. With his two business partners, he is also the co-owner of two successful motels in NSW and QLD.



David is a 50/50 dad to his two sons and a daughter whom he invests a lot of his time and love into. He is involved with the RSL as a Sub Branch Vice President and also participates in personal growth and development seminars at least weekly. He is active in trail running, exercising and Netflix binges.

John Lewis, Director of Medical


John has worked as a Registered Nurse in emergency/critical care for over 18 years, served two years a Life Flight helicopter crew member, 11 years as a Retrieval Services Nurse coordinating remote area retrievals and trauma management and ten years as an adventure medic for remote adventure treks across Australia. John specialises in Disaster Management and has worked as a Mass Casualty Coordinator for the Royal Brisbane Hospital in addition to working with Qld Fire Services, QAS and Qld Health. John is also a member of the Australian Medical Assistance Team (AUSMAT) having been deployed overseas to earthquakes and other disasters. This experience brings a wide range of medical skills and expertise to the team as our Director of Medical.

Tony Brennan, Director of Participant Operations

Tony brings with him a wealth of knowledge. He has been a Registered Nurse (RN) in remote hospitals for over 26 years, 15 years’ experience in emergency/critical care, five years as a Life-Flight helicopter crew member and four years as a Trek Medic.

Tony has also rock climbed for over ten years, has trekked Kokoda as a medic, in addition to adventure treks throughout Nepal, Canada, and the US. With extensive knowledge of logistical requirements, including a high level of risk mitigation and safety management techniques and exceptional communication skills, Tony is the Director of our Participant Operations.

Jason Hicks, Director of I.T and Systems

Currently a CMO and IT Specialist at PPC, Jason joins the team with over 21 years’ experience in emerging information technologies and customer experience platforms. He has managed many project roll-outs, major tenders and product developments.


Jason holds a Master’s in Business Administration and has worked across Marketing, Sales, IT and Business Development departments throughout his career.

Jason Leslie, Director of Strategy/Government

Jason has over 20 years’ experience in the sport and recreation industry and is a Director of sport and leisure consultancy, Otium Planning Group.  Skilled in a wide range of sport and recreation planning disciplines including the preparation of aquatic and indoor facility strategies, he has project managed numerous studies in this specialist area for both local and state government governments. Previously Jason held senior roles with Sport and Recreation Queensland within the Queensland Government and is a former CEO of the State Hockey Centre.


With hands-on experience as a manager of sport and recreation facilities, including the commissioning of aquatic facilities and understanding of commercial elements, Jason applies his knowledge to great effect in aquatic and sports facility planning studies to help deliver sustainable outcomes. He has recently delivered a diverse range of studies including those related to regional planning, and for planning, tenure and management of sport and recreation, aquatic and leisure facilities and regional stadiums.  He has presented at several industry conferences throughout Australia on facility planning and delivered numerous training programs in facility planning and management.


Jason has been a member of several Board’s and Committees for non-for-profit organisations and is a proud inaugural Director of Trek2Health.

Jason Gallagher, Director of Finance/Legislation

Jason Gallagher brings a wealth of knowledge to the Trek2Health team with his considerable finance and commercial experience, together with his passion for the outdoors and a strong drive to support his local community.


 Having worked as a senior manager in a large corporate for over 20 years, Jason holds a Bachelor of Commerce, is a Chartered Accountant and specialises in financial project management and business improvement. He has worked across various finance, commercial and business transformation roles in four different countries and across three continents. Jason and his family have a keen interest in the outdoors and are regularly seen walking and camping in the national parks around Brisbane.

Doug Parry, Honorary Secretary

Doug was raised in Newcastle NSW and entered RMC Duntroon in January 1975, completed a BA (Mil Studies) and graduated into RAAOC in December 1979. After 26 years of service, he left the Army as a Major in 2000 to take up employment as an Operations Manager with Australian Catholic University (ACU) - Brisbane. After leaving ACU in 2005, Doug managed our Strata Management business until its sale in 2016 and now retired. Doug met and married his wife Kerry in 1982. He has two adult children (Gavin & Alicia) and one grandchild.


His current interests include Sea Kayaking, travel and camping. Doug and his wife are both retired and now live at Hope Island with our two dogs, cat and Cockatiel. Over the past four years, they have travelled around Vietnam by motorcycle, been through Malaysia and into Cambodia, visited China and managed several trips to the USA.


Doug served as the President of The Gap Sub-branch /Chapter from 2013-15, then as Honorary Secretary until March 2019. Kerry & himself are active in our Church Parish and have recently joined the St Vincent de Paul Society which they have been involved in delivering ‘Meals on Wheels’ in the Ashgrove/Bardon area. They also will again participate with the Paradise Point group in due course. Doug currently serves as a Committee Member of two Body Corporate Committees. He also was a Strata Manager for over ten years performing Secretarial and Financial duties for over one hundred Community Titles Schemes. Doug brings broad Administrative and Management skills to the role as Honorary Secretary and looks forward to working with the Chairman, Directors and CEO to achieve the goals of Trek2Health.


Media Contact - Ian Warner

m. +61 412 272 644


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