Log book
When is a log book needed?
A log book is required for attempts that last more than one hour (including journeys, voyages and expeditions, which may last for extended periods of time). For these types of record attempts, it is important for Guinness World Records to have a minute-by-minute account of what is achieved at what point in the attempt, in order to review in conjunction with video footage. This is especially important when documenting a ‘longest marathon’ record, as these logs will detail completed activity and rest breaks, to ensure that guidelines are followed throughout. In all cases, the independent witnesses are responsible for maintaining the log books. With journeys, voyages and expeditions, the individual, team and/or support teams are responsible for maintaining the log book throughout the attempt.
What must the log book include?
• For non-marathon attempts (those lasting 24 hours or less), entries must be made at least every
hour to document what has been achieved during the preceding hour.
• Any unexpected occurrences such as weather delays, injury, equipment breakdown or any other disturbances must be noted along with the time that they occurred.
• Log books for marathon records must include start and stop times for activity, as well as rest breaks. Your Specific Guidelines will provide a template that the witnesses can use to complete the log book.
• Any other details requested in the Specific Guidelines. Please consult the guidelines for your record attempt for any additional items that are required for your specific record category.