William Bonac’s career is a lesson in refusing to go away. The Ghanaian-born, Netherlands-based “Conqueror” climbed from 15th place on his Mr. Olympia debut to second place on bodybuilding’s biggest stage — and twelve Olympia appearances later, he is still winning pro shows at 44. 🇬🇭
He never did win the Sandow. But with two Arnold Classic titles, 13 professional victories and one of the longest elite careers of his era, Bonac built a record most champions would trade for. This is his complete, verified story.
📋 Quick Facts
| Full Name | William Bonac |
| Nickname | The Conqueror |
| Born | 18 May 1982, Ghana |
| Age | 44 (as of October 2026) |
| Nationality | Ghanaian-Dutch — born in Ghana, based in the Netherlands |
| Height | 5 ft 7 in (170 cm) |
| Weight | Not published (profiles report a contest range around 225–235 lb) |
| Division | IFBB Pro League Men’s Open Bodybuilding |
| Pro Debut | 2012 British Grand Prix (212 division) |
| Pro Wins | 13 |
| Biggest Wins | Arnold Classic 2018 & 2020 |
| Best Olympia Placing | 2nd (2019) |
| Mr. Olympia Appearances | 12 (2014–2022, 2024, 2025, 2026) |
| @william_bonac | |
| Status | Farewell tour announced — final Olympia done in 2026; last shows planned for 2027 |
🌍 From Ghana to the Netherlands
William Bonac was born in Ghana on 18 May 1982 and spent his early childhood there before his life took him to the Netherlands, the country he has represented throughout his career.
He started lifting at 13, using training as a stress release, and drew inspiration from Flex Wheeler, Kai Greene and Arnold Schwarzenegger — the three physiques that shaped what he wanted to become.
The road was not comfortable. Bonac has spoken about a period before his rise when he lost his job and his home and was sleeping in his car. Bodybuilding was the thing he refused to give up.
🎟️ The Amateur Breakthrough and the Pro Card
Bonac announced himself internationally at the 2011 Arnold Amateur in Columbus, placing third in the heavyweight division against a deep international field.
The exact show that awarded his IFBB pro card is not documented in the primary sources — a contemporary report says he earned it at an event in Holland soon after the Arnold Amateur. What is certain is the debut: by 2012 he was on the British Grand Prix stage as a professional.
He started in the 212 division, placing sixth at that British Grand Prix and third at the 2012 Europa Supershow. It quickly became clear his future was bigger than 212 pounds.
📈 The Climb: First Win and the Olympia Ladder
Bonac moved up to the Men’s Open and served a hard apprenticeship in 2014 — second at the Australia Pro Grand Prix and the Tampa Pro, and a humbling 15th place on his Olympia debut in Las Vegas.
That same season brought his breakthrough: the 2014 Golden State Pro in Sacramento, his first professional victory. The climb did not start at the top for William Bonac — it started at fifteenth.
From there the Olympia placings tell the story of the most patient rise in the division: 8th in 2015, 5th in 2016, and 3rd in 2017, behind only Phil Heath and Big Ramy. Wins at the Nordic Pro (2015 and 2016), the Dayana Cadeau Classic (2015) and the Prague Pro (2016) filled the trophy cabinet along the way. 🪜
🏆 The Arnold Classic King of 2018 and 2020
In March 2018, Bonac won the Arnold Classic in Columbus on his first professional appearance at the show, dominating all three rounds of judging and beating five-time champion Dexter Jackson — whose own remarkable career is told in our Dexter Jackson biography.
Receiving the trophy from Arnold Schwarzenegger himself, Bonac told him that getting it from him was “like a fairy tale”. Few winners have meant it more.
He finished second at the 2019 Arnold Classic and won the Arnold Classic Australia instead — then, in 2020, he took the Columbus crown for a second time. Two Arnold titles put him in rare company: the full roll of champions is in our complete list of Arnold Classic winners.
🥈 2019: One Step From the Sandow
The 2019 Mr. Olympia was the peak. Bonac arrived in Las Vegas in the best shape of his life and finished second, runner-up to champion Brandon Curry — the closest he ever came to the Sandow trophy.
It capped a remarkable run of Olympia consistency: 3rd, 4th and 2nd across 2017–2019, in fields that included Heath, Big Ramy and Curry at their best. Ramy would win the next two Olympias; Bonac placed fifth in 2020 and sixth in 2021.
The rivalry with Curry defined his era — Curry beat him at the 2019 Olympia and again at the 2022 Arnold Classic, where Bonac was second. You can read the champion’s side of it in our Brandon Curry biography.
🔄 The Veteran Years: Boston, a Break, and a Comeback
Bonac kept winning into his forties. The 2022 Boston Pro title was his ninth pro victory, and he closed that season ninth at the Mr. Olympia — his ninth Olympia appearance in a row.
After a seventh place at the 2023 Arnold Classic, he stepped away for the rest of 2023 and spoke honestly about wondering whether to retire. He decided to return — in his own words, only on his own terms.
The comeback worked. In 2024 he won the Empro Classic Pro in Spain, took second at the Portugal Pro and the Dubai Pro, and placed seventh at the 2024 Mr. Olympia — back on the sport’s biggest stage at 42 years old. In 2025 he won the Detroit Pro, was second at the New York Pro and the Dubai Pro, fifth at the Arnold Classic, and ninth at his eleventh Olympia. 💪
📊 Verified Contest Record (Major Shows)
| Year | Show | Placing |
|---|---|---|
| 2011 | Arnold Amateur (Heavyweight) | 3rd |
| 2012 | British Grand Prix (212) | 6th |
| 2012 | Europa Supershow (212) | 3rd |
| 2013 | EVLS Prague Pro (Open) | 5th |
| 2014 | Australia Pro Grand Prix | 2nd |
| 2014 | Golden State Pro | 1st 🏆 |
| 2014 | Tampa Pro | 2nd |
| 2014 | Mr. Olympia | 15th |
| 2015 | Nordic Pro | 1st 🏆 |
| 2015 | Mr. Olympia | 8th |
| 2015 | Dayana Cadeau Classic | 1st 🏆 |
| 2016 | Mr. Olympia | 5th |
| 2016 | Nordic Pro | 1st 🏆 |
| 2016 | EVLS Prague Pro | 1st 🏆 |
| 2017 | Mr. Olympia | 3rd 🥉 |
| 2017 | Arnold Classic Europe | 2nd |
| 2017 | EVLS Prague Pro | 2nd |
| 2018 | Arnold Classic | 1st 🏆 |
| 2018 | Arnold Classic Australia | 2nd |
| 2018 | Mr. Olympia | 4th |
| 2019 | Arnold Classic | 2nd |
| 2019 | Arnold Classic Australia | 1st 🏆 |
| 2019 | Mr. Olympia | 2nd 🥈 |
| 2020 | Arnold Classic | 1st 🏆 |
| 2020 | Mr. Olympia | 5th |
| 2021 | Mr. Olympia | 6th |
| 2022 | Arnold Classic | 2nd |
| 2022 | Boston Pro | 1st 🏆 |
| 2022 | Mr. Olympia | 9th |
| 2023 | Arnold Classic | 7th |
| 2024 | Empro Classic Pro | 1st 🏆 |
| 2024 | Mr. Big Evolution Portugal Pro | 2nd |
| 2024 | Dubai Pro | 2nd |
| 2024 | Mr. Olympia | 7th |
| 2025 | Arnold Classic | 5th |
| 2025 | Detroit Pro | 1st 🏆 |
| 2025 | Pittsburgh Pro | 4th |
| 2025 | New York Pro | 2nd |
| 2025 | Dubai Pro | 2nd |
| 2025 | Mr. Olympia | 9th |
| 2026 | Tsunami Nutrition Showdown (France) | 1st 🏆 |
| 2026 | Empro Classic Spain Pro | 1st 🏆 |
| 2026 | FLEX Weekend Italy Pro | 2nd |
| 2026 | Mr. Olympia | 16th |
That is 13 professional wins, two Arnold Classic titles and 12 Mr. Olympia appearances — he has stood on that stage twelve times across thirteen years, a run of longevity matched by very few men in the Open era.
📍 William Bonac in 2026: The Farewell Tour
Bonac’s 2026 season was no victory lap — it was a winning one. He took the Tsunami Nutrition Showdown in France and the Empro Classic Spain Pro, and finished second at the FLEX Weekend Italy Pro, at 44 years old.
Ahead of the 2026 Mr. Olympia, he announced that Las Vegas would be his final Olympia: “This is gonna be my last Olympia. I’m gonna hang up the trunks. It’s gonna be my last Olympia, but not my last show.”
He placed 16th at that final Olympia in September 2026 — and the story does not quite end there. Bonac plans to close his career where his greatest wins came: at the 2027 Arnold Classic and the 2027 Arnold Classic UK.
His reasoning says everything about the man: “If I say goodbye at Olympia, I definitely have to say goodbye at Arnold Classic.” After that farewell, one of the sport’s great careers will be complete. 🎬
❓ Frequently Asked Questions
How many times has William Bonac won the Arnold Classic?
Twice — in 2018 and 2020, both in Columbus, Ohio. He also won the Arnold Classic Australia in 2019 and was runner-up at the Arnold Classic in 2019 and 2022.
What is William Bonac’s best Mr. Olympia placing?
Second place in 2019, when he finished runner-up to champion Brandon Curry. It was the peak of a run that also brought him third in 2017 and fourth in 2018.
How many Mr. Olympia competitions has William Bonac entered?
Twelve: every year from 2014 to 2022, then 2024, 2025 and 2026. He climbed from 15th on his debut to 2nd in 2019 — one of the great long climbs in Olympia history.
Where is William Bonac from?
He was born in Ghana on 18 May 1982 and is based in the Netherlands, which he has represented throughout his career. He is Ghanaian-Dutch.
Why is William Bonac called “The Conqueror”?
The nickname reflects the way he conquered stages across the world over a long career — from the 212 division to Arnold Classic titles and an Olympia runner-up finish, against three generations of rivals.
Is William Bonac retired?
Not quite yet. He competed at his final Mr. Olympia in September 2026 and has announced he will finish his career at the 2027 Arnold Classic and Arnold Classic UK — a farewell at the contest he won twice.
🏁 Final Word
Fifteenth to second. A 212 starter who became a two-time Arnold Classic champion. A man who slept in his car and ended up collecting trophies from Arnold Schwarzenegger’s own hands.
William Bonac never held the Sandow — but across twelve Olympias and thirteen pro wins, “The Conqueror” conquered just about everything else. His farewell in Columbus in 2027 will close one of the most durable careers the Open division has ever seen. 💪