A senator’s 25 hours 5 minutes is the longest Senate speech
Source. Senate.gov, Filibusters and Cloture; The Civil Rights Act of 1964
Method and data
Method. Length is hours plus minutes divided by 60. Lengths are from Senate.gov.
| Item | Year | Hours | Minutes | Length (hours) | Note |
|---|---|---|---|---|---|
| Senator, 2025 | 2025 | 25 | 5 | 25.083 | Senate.gov dates the speech April 2025 and calls it the longest individual speech |
| Senator, 1957 | 1957 | 24 | 18 | 24.3 | Against the Civil Rights Act of 1957 |
| Senator, 1964 | 1964 | 14 | 13 | 14.217 | Longest speech against the 1964 bill, June 9–10, 1964 |
