4 × 100 metres relay a cinder track at the 1964 Tokyo Games. The women's world record stands at 40.82 seconds, set by the United States in 2012 at the London Olympics. According to the IAAF rules, world records in relays can only be set if all team members have the same nationality. 4 × 100 metres relay The 4 × 100 metres relay or sprint relay is an athletics track event run in lanes over one lap of the track with four runners completing 100 metres each. The first runners must begin in the same stagger as for the individual 400 m race. A
Lap steel guitar uses a modified C6 tuning, with a B in the bass: "B-E-G-A-C-E". Jerry Byrd has a C6 variant with C# in the bass: C# E G A C E. Dobro players also generally use a set of strings with different gauges than those used on standard electric or acoustic guitars to help them to project more sound and to achieve their higher tunings. Many Western Swing lap steel players, and some Old-Time Country lap steel players, use a C6 tuning. There is no "standard" C6 tuning; one popular one is "C-E-G-A-C-E". This tuning is a good one for learning Don