That's food for thought.
5 hills of a similar gradient to Redstone Rigg, maybe I should have read that page more carefully before I signed up.
Should be fun though, I think...
Don't think any of the climbs, and I have been over them all at one time or another are a sapping as the Rigg.
The Rigg also a reputation and most experience the climb during the ToEL, its very early in the season, its ridden in the worst of all possible weathers by a mixture of club riders out to prove a point to their peers and others who are out to survive. Its adventure for the hardiest of soles.
However, in my humble opinion and I'm speaking as the second worst climber on the planet, I think with the majority of the climbs coming in the second third of the route the accumulative effect may prove interesting to those who under-estimate their gearing requirement and perhaps over estimate their levels of fitness.
As a non climber who has never managed to climb the Rigg without stretching my legs I know that I will not be walking on the day. I may be passed while grovelling in the gutter, chewing the stem and stealing all the air for miles around and I may be last in, but I don't care to me the event is just saddle time in preparation for the Snow Roads.