i had an operation 12 years ago to remove some damaged cartilage in right knee after playing football.It took a lot of time to start running again (about 3 months)after the operation.i played football again which i shouldnt have done.Twist of the knee must be avoided which is why the cartilage got damaged in the first place even running and turning around suddenly must be avoided. Soft running surfaces must be used to compensate for the lack of cartilage which is not there anymore to reduce impacts. Unfortunately ,cartilage cant grow back.the knee feels weak as the body tend to take stand with the other leg to protect the operated knee (even if you dont want to) which leads to a bit of limping.This can be reduced by muscling the bad leg. Another thing is damaged cartilage means damaged ligaments which is why the knee feel loose. the best thing is to protect knee by -running soft on surfaces -do weights with bad leg -avoid turning and twisting at all cost
It is quite flat and a bit crowded at the start.Flat to start,downhill at about 1.7km then flat till 6.5km where there is a hill but it aint too big,then flat,then goes downhill after 9.5km.There should be water at about 5.5km.So you can do a fast time if you are not stuck at the beginning.You should be able to enter on the day.Its quite far from the station (at least a good hour walk)
strange.If you stop drinking water 2 hours before a race,you should be ok with a pee before the start.Try to control it and it may go away for a while.Eventually,u will have to stop anyway for a marathon lenght.