A Nigerian-born leadership coach and author, Peter Adeleke, has set a new Guinness World Record for the longest leadership lesson after delivering a marathon lecture for 28 hours and 45 minutes in Calgary, Canada.
Adeleke, who embarked on this ambitious challenge in August, initially targeted a duration of 30 to 48 hours. His goal was to surpass the previous record of 24 hours.
Adeleke took to Instagram to announce that his record attempt had been officially recognized by Guinness World Records.
He shared a screenshot of the confirmation email, which read, “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!”
Guinness World Records also confirmed the achievement on its official website, noting, “The longest leadership lesson is 28 hr 45 min and was achieved by Peter Adeleke (Canada), in Calgary, Canada, on 30 August 2025.”
The statement further highlighted Adeleke’s work as an author, speaker, and leadership expert, emphasizing that his goal was to “change the narrative of leadership.”
His attempt aimed to “raise the bar in leadership development and spark conversation around transformational leadership.”
Adeleke celebrated his achievement on Instagram, reflecting on his journey with a quote from the Bible: “It’s official! He teacheth my hands to war, so that a bow of steel is broken by mine arms… Blessed be the Lord my strength which teacheth my hands to war, my fingers to fight, & my mouth to speak.”
He continued, expressing gratitude and humility: “I am humbled and honoured to officially announce that I am now a Guinness World Records Holder for the Longest Leadership Lesson in history. This journey was not by strength, but by grace, resilience, and the unwavering support of an incredible team. To God alone be the glory.”
On his personal website, Adeleke further explained why he did not reach his original goal of 48 hours. “Originally, I had set out to teach for 48 hours, but I completed the feat in 28 hours instead,” he shared. “And I’ve learned that in leadership — and in life — success isn’t always about hitting the exact target you set. It’s about pushing boundaries, discovering your true limits, and creating meaningful impact along the way.”
Adeleke added, “Did I break the record? Yes, I did — and it’s now official and confirmed! What mattered most was surpassing the previous record of 24 hours, and I achieved that by delivering a leadership lesson that lasted 28 hours.”
This remarkable achievement further establishes Adeleke as one of a growing number of Nigerians who hold Guinness World Records.
