the simplest way of scoring this would be to multiply all the throw and jump distances in metres together, then multiply all the running times in seconds together and divide the product of the throws and jumps by the product of the running times. The Special Total, $ST$, will be $$ ST=\frac{LJ\times HJ\times PV\times JT\times DT\times SP}{T_{100m} \times T_{400m}\times T_{110mH}\times T_{1500m}} $$ where $LJ$ is the distance from the long jump, $HJ$ the high jump, $JT$ the javelin, $DT$ the discus and $SP$ the shot putt, with units of $$ \frac{(length)^6}{(time)^4} = \frac{m^6}{s^4}. $$