Walk21 has an experienced core team, supported by an enthusiastic international network of technical experts.

Bronwen Thornton

Bronwen is an international expert, facilitator and trainer on walking and walkable communities, giving walking a voice on the international stage and within local communities, cities and professional arenas.

She has more than 20 years experience in strategic transport planning, community and political engagement, on-street analysis and creative development and policy and project delivery with a focus on equitable and sustainable transport.

Bronwen is the Chief Executive Officer of Walk21, specialising in Policy, Projects and Partnerships. She was also appointed Chair of the SLOCAT Partnership in 2019.

Jim Walker

Jim Walker

Jim is an international policy advisor, communications expert and special projects manager to enable more people to walk and ensure they have safe, attractive and accessible environments to walk in. 

Jim specialises in developing national policy and quality standards to benefit pedestrians as well as managing national campaigns and sustainable transport, active health and accessible recreation projects.

His advice has helped 13 of the top 20 places to be independently accredited as the most liveable places in the world.

His current walking project portfolio is active in 83 countries. Jim is the founder of Walk21 and supports the organisation’s network and activities.

Carlos Cañas

Has joined the Walk21 team as a Geographer specialised in Sustainable Urban Mobility, with a particular interest in Citizen Science approaches applied to Walkability.

As part of his ongoing Doctoral Studies at the Institute for Climate Change and Sustainable Development at the University of Malta, Carlos developed a Community Research Project on Walkability to better understand the underlying relationships between pedestrian’s experiences and the public space.

With a Master’s Degree in Geographic Information Systems (GIS), Carlos enjoys working on data analysis and cartographic production related to walkability to assist and support policies towards more pedestrian-friendly environments.  

Juliet Rita profile

Juliet Rita

Juliet is an urban transport planner and a lecturer at the Technical University of Kenya. Juliet is supporting Walk21 with the coordination of the Africa Network for Walking and Cycling (ANWAC).

Carly Gilbert-Patrick

Carly is a policy specialist with expertise in road safety, air quality, climate change and walking and cycling, supporting Walk21 with initiatives in Africa.

Dr Stefan Steiniger

Stefan is a spatial data specialist and geographic information systems architect supporting Walk21 with the development of walkability measurement tools.

Martin Wedderburn

Martin is a transport planner with 15 years experience in planning, policy and robust analysis to generate creative solutions.  He helps Walk21 with expertise on measuring, modelling and evaluating walking.

Martha Giraldo

Martha is the Director General of FundaPeatón, the pedestrian advocacy organisation in Medellín, Colombia supporting Walk21 with the development of practical advocacy tools.

Gail Jennings

Gail is a social scientist, sustainable transport planner and PhD Candidate at the Centre for Transport Studies, University of Cape Town. She helps Walk21 with transport and behaviour change research.

Ralf Tinga

Ralf Tinga

Ralf organised European Commission programmes on sustainability, mobility and urban transitions, including European Green Capital. He was an organiser of the 5th European Conference on the Sustainable Urban Mobility Plans. At Walk21, Ralf supporrts communication, projects and the annual conference.

Aida Kaffel Rodriguez

Aida is a Lawyer specialising in International Law, supporting Walk21 with research, data and policy analysis.

Dr Rodney Tolley

Rodney taught active transport planning for 30 years at university level and is an author and speaker. He leads Walk21’s research work and provides quality control for conference content.

Janene Tuniz

Janene is a development and cooperation specialist working with Walk21 to secure sustainable financing for people that walk.


The Walk21 Foundation is overseen by a Board of Trustees and is supported by an Advisory Council.

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