After lecturing for 28 hours and 45 minutes in Calgary, Canada, Peter Adeleke, a Nigerian-born author and leadership coach, has formally set a new Guinness World Record for the longest leadership course.
Adeleke set a goal to beat the previous record of 24 hours when she started the marathon lecture in August, with a target time of 30 to 48 hours.
He claimed to be a title holder after Guinness World Records authorized his attempt in an Instagram post on Monday.
“We are thrilled to inform you that your application for the longest leadership lesson has been successful and you are now the Guinness World Records Title Holder!” was part of the GWR confirmation email screenshot.
“The longest leadership lesson is 28 hours and 45 minutes and was achieved by Peter Adeleke (Canada), in Calgary, Canada, on 30 August 2025,” GWR said, confirming the record on its official website.
“Peter is a certified leadership specialist, speaker, and author. In order to alter the perception of leadership, he set out to create a record in the field.
“He wants to start a dialogue about transformational leadership and raise the standard for leadership development.”
Adeleke also celebrated the milestone by posting on Instagram, saying, “It’s official! He teaches me how to fight so that my arms can break a steel bow. Thank you, Lord, for giving me the power to use my mouth to speak, my hands to fight, and my fingers to fight.
It gives me great pride and humility to declare that I now hold the Guinness World Record for the Longest Leadership Lesson in history.
“This trip was made possible by grace, resiliency, and the continuous support of an amazing team—not by strength. The honor belongs only to God.
“Originally, I had set out to teach for 48 hours, but I completed the feat in 28 hours instead,” he added on his website, explaining why he did not meet his original 48-hour target.
And I’ve discovered that success in leadership and in life isn’t necessarily about meeting your exact goals. It’s about pushing limits, realizing your own limitations, and making a significant difference in the process.
“Have I broken anything? Yes, I did, and it’s verified and official now! The most important thing was to beat the previous record of 24 hours, which I did by giving a 28-hour leadership lesson.
With this accomplishment, Adeleke joins an increasing number of Nigerians who are Guinness World Record holders.
