Guinness World Record: Canada-Based Nigerian Holds Longest Leadership Lecture

Nigerian-born leadership coach and author, Peter Adeleke, has officially set a new Guinness World Record for the longest leadership lesson after teaching for 28 hours and 45 minutes in Calgary, Canada.

Adeleke began the marathon lecture in August, aiming to surpass the previous record of 24 hours, with a target range of 30 to 48 hours.

On Monday, he announced via Instagram that Guinness World Records had approved his attempt, officially naming him a title holder.

A screenshot of the confirmation email from GWR read in part:
“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!”

Confirming the record on its official website, GWR stated:
“The longest leadership lesson is 28 hr 45 min and was achieved by Peter Adeleke (Canada), in Calgary, Canada, on 30 August 2025. Peter is an author, speaker and qualified leadership expert. He set out to achieve a record in the field to change the narrative of leadership. He hopes to raise the bar in leadership development and spark conversation around transformational leadership.”

Celebrating the achievement, Adeleke wrote on Instagram:
“It’s official! … 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 website, he explained why he did not reach his initial 48-hour target, saying:
“Originally, I had set out to teach for 48 hours, but I completed the feat in 28 hours instead. 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. 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 accomplishment adds Adeleke to the growing list of Nigerians holding Guinness World Records. Recently, celebrity chef Hilda Baci set a new record for the largest serving of Nigerian-style jollof rice at the Gino World Jollof Festival in Lagos, with a dish weighing 8,780 kilogrammes (19,356 lb 9 oz), making her a two-time GWR title holder.

In May 2023, Baci had previously achieved the record for the longest cooking marathon by an individual, clocking 93 hours and 11 minutes, surpassing the 87 hours and 45 minutes set by Indian chef Lata Tondon.