From the start field, you run through the village (on tarmac, over a bridge, fork left, left again, and left again after the village hall) to the old race field, turning left through a gate into the field. Follow an easy path through trees and small fields beside the stream - all very idyllic. After about 500m you turn right and climb a hump into farmers pasture fields, and climb a couple of stiles as you pass Tynllwyn Farm. When you reach the first lane crossing, go diagonally right and climb the stile at the right hand side of the right hand gate (that's the one on the right - pay attention at the back).
After another couple of fields you arrive at another lane, and this time you turn left out of the gate and run on the lane itself. If you've gone off too quick, you'll certainly know it now, as the lane climbs strongly past a couple of cottages and farms. At a crossroads turn right onto a rubbley bridleway, leading out to the open hill. When you reach the grass, take any line upwards, but don't go too far left into the trees.
You cannot go far wrong now, just keep heading upwards on a convex slope - it gets gradually more gentle until you reach quite fast running towards Cefn Cyff. In mist it is tempting to think Cefn Cyff might be the summit approach - dream on, it's just a steeper climb to the next section.
It can be quite boggy underfoot on the flatter sections, but soon you start the climb to Fan Y Big. You can either take the tiny path up the crest of the ridge, or the larger path on the left. However you'll need to break right onto the crest at some point to meet and greet the marshall at the summit cairn (the left hand path bypasses this, and leads to disqualification and everlasting damnation).
Now there's fast flat running across to the saddle at Craig Cwmoergwn then another stiff climb as you start to round the horseshoe. From here, for the next couple of KM, you are well advised to stick the left hand path beside the precipitous drop. It is rubbley and not quite the shortest route, but safe and quite fast running. Those who know the route may take the "short cut" across the top, but don't forget how dodgy this can be in the mist (just ask Helen Fines, who ended up in Talybont).
After the true high point of the race (754m) you start the long descent in a NNE direction towards Bryn. There's not much to say about this bit, except - don't take any right turns. The run down is slightly technical in places, at a gradient where you still need to work at it, and very very long - don't go flat out in the first couple of miles or we'll be scraping you off the grass at the finish and having to call your Mum.
When Bryn starts to rise in front of you, there's a left turn in the track, onto a short section of technical narrow path with the ground sloping steeply to your left. After a mile or so of this, during which I usually go headlong into some red clay mud, you come down onto a nice grassy track heading towards bands of trees. There are likely to be some flags on this section, but the crucial point is not to go too far right and end up in Pencelli. When you come into an area of blown out thorn trees, you are looking for a steep path down to the left through bracken to a stile. Then down through some scrub woodland to a new farm access track, which you follow right for about 50m to the road.
Down the road, cross the ford, up the slight rise (without puking please) and over another stile to turn right onto a slightly larger road that takes you down into the village of Llanfrynach. At the t-junction enter the race field and... finish!