I remember back in the late 70's that we used a 5 milimetre spike for a tartan(rubber) surfaced track, longer for a gravel track, say 10 mil.
2 centimeters
Probably the 3/8 inch spike. I have found that to be common in high cross country running. IN track you probably only want to use a 1/8 inch spike.
The Nike Zoom Rival S typically uses 1/4-inch (6mm) or 3/8-inch (9mm) replacement spikes, depending on the specific model and track surface. It's best to check the manufacturer's guidelines or the shoe's tag for the recommended spike size to ensure optimal performance and traction.
The question is ambiguous: do you mean the length of the pins, or the size of the shoes? If you are asking about the length of the pins, there is not a single right answer, because it depends on the type of running you are doing (for example track sprint vs. cross-country), and the surface you are running on.
According to PIAA (Pennsylvania Interscholastic Athletic Association) rules, the maximum allowed spike length for all-weather tracks is typically 1/4 inch (6 mm) or 3/8 inch (9 mm), depending on the specific surface of the track. Athletes are required to use spikes that are appropriate for the type of all-weather track to prevent damage. It's essential for competitors to check with the event officials for any specific regulations or modifications that may apply.
The recommended size for what??!
an Olympic size track has how may lines
No. A spike buck can grow more points in subsequent seasons. Some hunters believe that a spike buck has a diminished potential rack size, and cull them for that reason, but it is possible for them to grow more points in subsequent seasons.
A baby track, is a track that is much smaller then an average track (half the size)
About 1 1/2 inches
The recommended wheel size for a bicycle with a 622 wheel size is 700c.
A king size bed is recommended for a master bedroom.