Hour record
Hour record holders (men's)

Date
Rider
Age
Velodrome
Distance (km)
Equipment
19 January 1984
Italy Francesco Moser
32
Agustín Melgar (333 meters outdoor concrete high-altitude), Mexico City, Mexico
50.808
Bullhorn handlebar, oval steel tubing frame, disc wheels.
23 January 1984
Italy Francesco Moser
32
Agustín Melgar (333 meters outdoor concrete high-altitude), Mexico City, Mexico
51.151
Bullhorn handlebar, oval steel tubing frame, disc wheels.
17 July 1993
United Kingdom Graeme Obree
27
Vikingskipet (250 meters indoor wood sea-level), Hamar, Norway
51.596
Graeme Obree-style "praying mantis" handlebar, round steel tubing frame, carbon tri-spoke wheels.
23 July 1993
United Kingdom Chris Boardman
24
Velodrome du Lac (250 meters indoor wood sea-level), Bordeaux, France
52.270
Triathlon handlebar, carbon airfoil tubing frame, carbon 4-spoke wheels.
27 April 1994
United Kingdom Graeme Obree
28
Velodrome du Lac (250 meters indoor wood sea-level), Bordeaux, France
52.713
Graeme Obree-style "praying mantis" handlebar, round steel tubing frame, carbon tri-spoke wheels.
2 September 1994
Spain Miguel Indurain
30
Velodrome du Lac (250 meters indoor wood sea-level), Bordeaux, France
53.040
Wide triathlon handlebar, carbon monocoque aero frame, disc wheels.
22 October 1994
Switzerland Tony Rominger
33
Velodrome du Lac (250 meters indoor wood sea-level), Bordeaux, France
53.832
Triathlon handlebar, oval steel tubing frame, disc wheels.
5 November 1994
Switzerland Tony Rominger
33
Velodrome du Lac (250 meters indoor wood sea-level), Bordeaux, France
55.291
Triathlon handlebar, oval steel tubing frame, disc wheels.
6 September 1996
United Kingdom Chris Boardman
28
Manchester Velodrome (250 meters indoor wood sea-level), Manchester, UK
56.375
Graeme Obree "superman-style" handlebar, carbon monocoque aero frame, 5-spoke front and rear disc wheel.

Question: When did Boardman set the record of 56.375 km?
Answer: Boardman set the Hour record of 56.375 km in 1996, using Obree.