RunThrough Marlow Triathlon 2026: river restriction notice
Published 21 April 2026
© Crown copyright 2026
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This publication is available at https://www.gov.uk/government/publications/runthrough-marlow-triathlon-2026-river-restriction-notice/runthrough-marlow-triathlon-2026-river-restriction-notice
When
Sunday 24 May 2026, 4am to 11am.
Where
Marlow reach, Higginson Park to 700 metres upstream.
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Details
Swimmers will be using a buoyed channel between Higginson Park and 700m upstream on the right (Buckinghamshire, Higginson Park) side of the river.
The navigation channel will be on the left, Berkshire (Windsor and Maidenhead) side of the river.
Masters of all boats should maintain a safe speed and lookout whilst passing the course.
All boats should be navigated in accordance with any instructions given from Environment Agency control points or patrol launches.
Those in charge of boats should be aware that they are responsible for avoiding collision. You should use all available means appropriate to the circumstances and conditions to decide if there is a risk of immediate danger and avoid it.
Bathing is not allowed in the river on or near the course during the hours of racing.
All directions as to left bank and right banks are given looking upstream.
Byelaws
Nothing contained in these directions shall supersede those parts of the Thames Navigation Licensing and General Byelaws 1993 and the UK Merchant Shipping (Distress Signals and Prevention of Collisions) Regulations 1996 as may be relevant. Particular attention should be paid to byelaws 24-42 of the Thames Navigation Licensing and General Byelaws 1993, Steering Sailing and Speed.
And Notice is hereby given, that it is provided by Byelaw 52 of the Thames Navigation Licensing and General Byelaws 1993 that:
The master of any vessel shall except in an emergency not pass any boat-race regatta public procession or gathering for the launch of a vessel or any other event or function which may cause a crowd to assemble on or by the river nor station his vessel thereon in such a manner as would risk obstructing impeding or interfering with such boat-race regatta procession launching event or function or endangering the safety of persons assembling on the river or preventing or interfering with the maintenance of order thereon.
The maximum penalty for breach of the Byelaws is £1,000.
Read our Thames Navigation Licensing and General Byelaws 1993.