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The first TBM peaked at 4 meters per week. This increased to 16 meters per week four decades later. By the end of the 19th century, speeds had reached over 30 meters per week. 21st century rock TBMs can excavate over 700 meters per week, while soil tunneling machines can exceed 200 meters per week.
fastest all-time junior: Michael Phelps United States 9 August 2003: USA Championships: College Park, United States [22] 400m individual medley: 4:10.02 Ilya Borodin Russia 23 May 2021: European Championships: Budapest, Hungary [23] 400m individual medley: 4:08.94 not ratified, fastest all-time junior: Kosuke Hagino Japan 28 July 2012: Olympic ...
Relays: 4×50 m freestyle (short course only), 4 × 100 m freestyle, 4 × 200 m freestyle, 4×50 m freestyle (short course only), 4 × 100 m medley; The relay records displayed here are the official national relay records. However, British Swimming maintains a separate set of national relay records for club teams, which are not shown here.
the swimming events of the World Aquatics Championships, held in a long course (50 meter) pool. World Aquatics Swimming Championships (25m), at which swimming is the only discipline. This meet is held in a short course (25 meter) pool. Both events are organized by the international governing body for aquatics, World Aquatics (formerly known as ...
4 August 2024 [9] 100 m backstroke: 51.85 Ryan Murphy United States (USA) 2016 Rio de Janeiro: 13 August 2016 [10] 200 m backstroke: 1:53.27 Evgeny Rylov ROC: 2020 Tokyo: 30 July 2021 [11] 100 m breaststroke: 57.13 Adam Peaty Great Britain (GBR) 2016 Rio de Janeiro: 7 August 2016 [12] 200 m breaststroke: 2:05.85 Léon Marchand France (FRA) 2024 ...
[4] 800m freestyle: 7:53.97 Myles Brown: KZNA-KZ 13 April 2015: South African Championships Durban, South Africa [5] 1500m freestyle: 14:57.88 Heerden Herman: MATI 10 December 2010: League WP Sasko Championships South Africa [6] 50m backstroke: 24.34 AF: Gerhard Zandberg South Africa 2 August 2009: World Championships: Rome, Italy [7] 100m ...
The world unlimited water speed record is the officially recognised fastest speed achieved by a water-borne vehicle, irrespective of propulsion method. The current unlimited record is 511.11 km/h (317.59 mph; 275.98 kn), achieved by Australian Ken Warby in the Spirit of Australia on 8 October 1978.
This article includes the world record progression for the 4×100 metres freestyle relay, and it shows the chronological history of world record times in that competitive swimming event. The 4×100 metres freestyle relay is a relay event in which each of four swimmers on a team swims a 100-metre freestyle leg in sequence.