pace work and blow out difference

Question
QUESTION: hello sir. may i know the difference between PACE WORK and BLOW OUT in horse racing terms?

ANSWER: Hi Caine,
         A horse doing pace work is required to run certain distances at 'pace'rather than just cantering along.
A horse having a 'blow out'is usually run at a fast pace to see how their level of fitness is. If they blow out they will need more training and pace work before being ready to race. A fit horse will complete its work or race and its heart rate will return to normal quite quickly. An unfit horse will blow out after heavy work.
Cheers,
Don

---------- FOLLOW-UP ----------

QUESTION: hi sir. did you mean PACE WORK means improving the position for every furlong?

ANSWER: Hi Caine,
        No, pace work is training gallops at full pace or close to it. Its a training term not a racing term.
Cheers,
Don

---------- FOLLOW-UP ----------

QUESTION: thanks for the answer. in a nutshell, a gelding racing at 1200m, need a pace work from 1200m but a blow out/spurt from 800m/600m. am i right? i believe that spurt and blow out are same.

Answer
Hi Caine,
       No that is not quite right. To explain Pace Work: A trainer might say to the rider before going out on the track for a training session; do 1 round at a slow canter then step up the pace to about moderate gallop but do the last 600m at 3/4 pace. This means the hores will do 2 rounds of the track slowly speeding up to finish with 600m of moderately fast gallop. This is not full pace but a traing standard pace work gallop, such as would be experienced in a longer race, but not yet at full pace.
I hope this explains the meaning.
Cheers,
Don