>> How do they synchronize the clocks at different mile markers on a given
>> racecourse? I don't see them using a two-way radios, they can not use the
>> sound of the start gun, I don't see a group of people at the start all
>> grouped together getting the clocks at the same exact time, or I don't see
>> someone on a bike/car/motorcycle out ahead of the pack. All the races I
>> have ran the mile markers are always on sync with my watch. Just curious.
Ok, as one of the "clockmeisters" in our club, here's how it's easily
First, I assume we're talking about the big digital clocks at the mile
markers, not an individual standing calling out times from a watch.
The big digital clocks can be set for whatever start time you want,
and then started. So all the clocks can be out on the course, in
place, while the "clock setter" is at the start line with his/her stop
watch. When the race starts, they start their watch, then hop in a car
to the first clock, which has already been pre-set for something like
3:30. When their watch (which has the running race time) hits 3:30,
they start that clock, then hop in the car and go onto the next clock,
set and start it to the current running race time, etc.
There's no need to start them all at the same time, unless you're
absolutely concerned about pinpoint accuracy. Starting them
individually as outlined may introduce a variation by a second on each
individual clock, but that's pretty insignificant.
In a situation where you don't have clocks, but individuals calling
out times, then you need to have all of them (or their watches) at the