No, the race went in the field past the Grotto and on to eventually pick up the lane that runs along the ridge summit to the Folly at GR 297 026. This was demolished in WW2 to stop the Germans using it as a nav guide but rebuilt 91-94. If memory serves, the time I did the race was in 94 and was to commemorate the reopening.
The tunnel under the ski slope was grotty but did not have that naughty step in the roof that could (and did!) clout an unwary runner! Ask Old Greybeard how he knows!