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Leni von Bonin is a German swimmer who specializes in butterfly, individual medley and freestyle events. Swimming for Dresdner Sportclub 1898, von Bonin has qualified for national teams via her performances at German swimming championships and age-group competitions. She won a German national championship title in the 200- metre butterfly in 2025.
Leni von Bonin Wiki and Quick Info
| Profile | Details |
|---|---|
| Full name | Leni von Bonin |
| Date of birth | 1 March 2007 |
| Age | 19 years old (as of October 2026) |
| Nationality | German |
| Profession | Competitive swimmer |
| Main disciplines | Butterfly, individual medley, freestyle |
| Swimming club | Dresdner Sportclub 1898 |
| Training location | Leipzig, Germany, according to the supplied reference |
| Height | Approximately 5 ft 10 in (178 cm), as provided |
| Eye colour | Hazel |
| Hair colour | Blonde, Brown |
| @leni_vonbonin |
Leni von Bonin’s Swimming Career
Leni currently swims for Dresdner Sportclub 1898. Located in Dresden, Germany, von Bonin competes in butterfly events but also lists individual medley and freestyle events on her competitive profile. This ranges from middle-distance to long-distance swimming races.
Her personal best win at the 2025 German Swimming Championships in the women’s 200-metre butterfly is ranked in LEN titles. In a time of 2:13.15, she swam to victory. Completing research via the club reference provided, this championship was Dresdner SC’s first national pool title at the senior national level since 1997.
She also placed third in the women’s 400- metre individual medley event at the Championships with a time of 4:47.08. For junior competitions, von Bonin competed in the 2025 European Junior Swimming Championships. She ranked seventh for the women’s 200-metre butterfly in a time of 2:12.97.
Physical Status
| Physical feature | Details |
|---|---|
| Height | Approximately 5 ft 10 in (178 cm), unverified |
| Eye colour | Hazel, as provided |
| Hair colour | Blonde, as provided |
| Skin tone | Described as fair in the supplied reference |
| Athletic discipline | Competitive swimming |
Leni von Bonin’s Personal Bests
The following table lists selected performances from her official competition record. Long-course (50-metre pool) and short-course (25-metre pool) times are shown separately because they are not directly interchangeable.
| Event | Pool | Personal best | Competition |
|---|---|---|---|
| 50m butterfly | 50m | 29.51 | 2026 European Swimming Trials |
| 100m butterfly | 50m | 1:02.84 | 2026 European Swimming Trials |
| 200m butterfly | 50m | 2:12.03 | 2025 European Junior Championships |
| 200m individual medley | 50m | 2:18.15 | 2026 German Championships |
| 400m individual medley | 50m | 4:47.08 | 2025 German Championships |
| 200m butterfly | 25m | 2:10.41 | 2024 German Short-Course Championships |
| 400m individual medley | 25m | 4:40.30 | 2025 German Short-Course Championships |
| 400m freestyle | 25m | 4:09.57 | 2025 German Short-Course Championships |
Sources: World Aquatics and published Dresdner SC competition records.
Season’s Bests
Selected notable results from the supplied 2025 and 2026 competition records are listed below. These are season highlights, not a claim that every listed time was her fastest performance in that season.
| Year | Event | Time | Competition result |
|---|---|---|---|
| 2026 | 200m butterfly (50m) | 2:14.04 | 3rd, German Championships |
| 2026 | 400m individual medley (50m) | 4:47.33 | 4th, German Championships |
| 2026 | 200m individual medley (50m) | 2:18.15 | 4th, German Championships |
| 2026 | 400m individual medley (50m) | 4:47.65 | 2nd, Dutch National Championships and European Trials |
| 2026 | 200m individual medley (50m) | 2:19.31 | 4th, Dutch National Championships and European Trials |
| 2025 | 200m butterfly (50m) | 2:13.15 | 1st, German Championships |
| 2025 | 400m freestyle (50m) | 4:15.74 | 1st, German Age Group Championships |
| 2025 | 200m butterfly (25m) | 2:11.24 | 2nd, German Short-Course Championships |
| 2025 | 400m individual medley (25m) | 4:40.30 | 2nd, German Short-Course Championships |
The 2026 German Championships results are also documented in the official club report.
Progression: Leni von Bonin’s Swimming Journey
Von Bonin’s competition record shows a steady progression from age-group swimming into senior national and international events. Her results also illustrate the range of distances in which she has competed.
| Year | Notable milestone |
|---|---|
| 2019 | Competed at the German National Age Group Championships, finishing fourth in the 400m and 200m individual medley in her age category. |
| 2022 | Reached the podium in the 400m freestyle at the German Short-Course Championships, earning bronze. |
| 2024 | Won age-group national titles in the 100m and 200m butterfly and qualified for the European Junior Championships. |
| 2025 | Won the senior German championship in the 200m butterfly and bronze in the 400m individual medley. |
| 2025 | Finished seventh in the 200m butterfly final at the European Junior Championships, setting a personal best of 2:12.03 in the semi-final. |
| 2026 | Continued competing at the German Championships and European Trials, with additional strong individual medley performances. |
Honours and Achievements
Some of von Bonin’s most significant documented achievements include:
- 2025 German champion: Gold in the 200m butterfly at the German Swimming Championships.
- 2025 national bronze medallist: Third in the 400m individual medley at the same championships.
- 2025 European Junior Championships finalist: Seventh in the 200m butterfly.
- 2025 German age-group champion: First place in the 400m freestyle and 200m butterfly at the German Age Group Championships.
- 2025 German Short-Course Championships: Silver medals in the 400m individual medley, 200m butterfly and 400m freestyle.
- 2024 German Short-Course Championships: Silver in the 200m butterfly.
- 2024 age-group national champion: Gold in the 100m and 200m butterfly.
Her senior national title in 2025 was a landmark result for Dresdner SC, ending a long wait for an individual German pool championship title at the club.
Competition Results
The table below summarises selected results from major competitions. Pool lengths are identified to distinguish long-course (L) and short-course (S) events.
| Year | Competition | Event | Result |
|---|---|---|---|
| 2026 | German Championships | 200m butterfly (L) | 3rd — 2:14.04 |
| 2026 | German Championships | 400m individual medley (L) | 4th — 4:47.33 |
| 2026 | German Championships | 800m freestyle (L) | 4th — 8:51.47 |
| 2025 | German Championships | 200m butterfly (L) | 1st — 2:13.15 |
| 2025 | German Championships | 400m individual medley (L) | 3rd — 4:47.08 |
| 2025 | European Junior Championships | 200m butterfly (L) | 7th — 2:12.97 in the final |
| 2025 | German Age Group Championships | 400m freestyle (L) | 1st — 4:15.74 |
| 2025 | German Age Group Championships | 200m butterfly (L) | 1st — 2:14.91 |
| 2025 | German Short-Course Championships | 400m individual medley (S) | 2nd — 4:40.30 |
| 2024 | German Short-Course Championships | 200m butterfly (S) | 2nd — 2:10.41 |
| 2022 | German Short-Course Championships | 400m freestyle (S) | 3rd — 4:18.41 |
| 2019 | German National Age Group Championships | 400m individual medley (L) | 4th — 5:23.51 |
Results are drawn from the supplied competition history and official club records. The 2:12.03 personal best in the 2025 European Junior Championships semi-final is faster than her 2:12.97 final time.
What Makes Her Career Noteworthy?
Von Bonin’ has shown the capability to combine butterfly speed with individual medley stamina. Although her breakthrough moment was winning the title in the 200m butterfly, she has shown time and time again that she is more than capable in 400m individual medley and freestyle as well.
Placing 7th at the 2025 European Junior Championships was also another step forward. She lowered her personal best in the 200m butterfly to 2: 12.03 in the semi-final and went on to qualify for the 2025 World Junior Swimming Championships, per her club’.
Showing results at the German Championships and European Trials in 2026 show that she continues to compete at the senior level. Expect further improvement in her events of specialization as she makes the transition to fully international senior competition.
Personal Life and Instagram
Leni von Bonin has an active Instagram account of her own she posts on publicly (@leni_vonbonin). Leni’s publicly-known athletic career focuses on training for, competing in, and representing competitions for Dresdner SC 1898.
There is not a lot of publicly known information about her family, educational, and out-of-swimming life that can be confirmed.
Frequently Asked Questions
How old is Leni von Bonin?
She was born on 1 March 2007 and is 19 years old as of October 2026.
What is Leni von Bonin known for?
She is best known for winning the 200m butterfly at the 2025 German Swimming Championships and competing at the European Junior Swimming Championships.
Which swimming club does she represent?
She represents Dresdner Sportclub 1898 in Dresden, Germany.
What is Leni von Bonin’s 200m butterfly personal best?
Her listed long-course personal best is 2:12.03, achieved in the semi-final at the 2025 European Junior Swimming Championships.
Has Leni von Bonin competed internationally?
Yes. She competed at the 2025 European Junior Swimming Championships and qualified for the 2025 World Junior Swimming Championships, according to her club.
What are Leni von Bonin’s main swimming events?
Her principal events include the 200m butterfly and individual medley, alongside freestyle and other butterfly distances.
