Record #00345Sports archive
Men's 100 m Butterfly World Record (Long Course)
American swimmer Caeleb Dressel recorded 49.45 seconds in the men's 100 m butterfly final at the Tokyo Olympics on 31 July 2021, setting the long-course world record.
ARCHIVE VISUAL / 01
NOT TO SCALE
Current Record
49.45seconds
Current record value
- Holder
- Caeleb Dressel
- Start date
- 2021-07-31
- Record status
- VerifiedView verification details ↗Report an issue
Overview
Archive NoteDressel lowered his own former 49.50-second mark by 0.05 seconds in the Tokyo Olympic final, securing the gold medal.
The official timing report at the 2025 World Aquatics Championships still listed his 49.45 as the world record. Although branded Tokyo 2020, the Olympic race took place on 31 July 2021.
Record history
1 Milestones- 49.45 secondsCaeleb DresselTokyo, JapanCurrent Record
Sources
Evidence & ReferencesVerification basis and limitations
VerifiedThe record conclusion has sufficient verification support.
Basis: direct confirmation by an authority
Guinness directly certifies the global discipline record; swimming results are additionally verified against official competition timing.
- Verification assessment
- 2026-11-04
- Last editorial review
- 2026-11-04
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