Hard to know where to start! Carry on how you are and I foresee disaster.
If you have access to a good sports physio/injury therapist go to one.
Ligaments take a long time to heal, and the associated muscles will have weakened while you were (presumably!) inactive with torn ligaments.
Achilles tendonitis is something I am familiar with and is a separate issue. Holding the achilles in place with strapping, etc will make it worse. It needs to be able to fully extend and not be held in position.
So, you will need to keep the strapping off, and also stop football.
The ankle muscles will need to strengthen which you should do with gentle, controlled, low-intensity exercise such as slow running on smooth, flat surfaces.
You'll need to do regular stretching for the achilles and calfs The best stretches are heel drops off a step, but using your arms/upper body strength to bring yourself back to the level position (eccentric heel drops). Do not use the feet and ankles to bring yourself back level and certainly do not do heel raises or any other activity involving going on tiptoe. Do the stretches with knees bent, and also knees straight to activate different calf muscles.
That's probably enough for now! Do some research on achilles tendonitis (inflammatory), which in its chronic form is more correctly called achilles tendinopathy (degenerative, non-inflammatory).
richclip - Llanberis Pass is closed to traffic as we run up it so plenty of space (unlike at Beddgelert). It's quite a slope and has the effect of spreading out any bunching!
Given the usual conditions of heavy rain and storm force winds you may not feel the need to cool down in the lake!
Willboy - multiple marathons close together is par for the course for folks on this thread! It's a sensible approach to only target one of your races. If new to marathon running you will need to look after yourself carefully between marathons three weeks apart. No long runs in between - probably max 15 miles. Nothing high intensity. Rest up with no running at all for at least 5 days after Yorkshire, eat well and get plenty of sleep. Non-impact cross training would also be good e.g. swimming, bike.
eating too soon before you run. For a bowl of porridge you should allow 1 hr, a light meal 2 hrs, and a heavy meal 3 hrs.
not warming up, either at all, or not fully enough, before setting off at target pace.
Or are you talking about nausea? To avoid this you will have to experiment with different pre-run foods and the fuel you're taking on during runs in order to find nutrition that agrees with you. I find SIS stuff good such as their gels and Go-Bars.