Having looked at strava and what others have said, think I'll base my training around 1,800-1,900m which should be ample, and seems like the worst gradient is only about 10-12%, so plenty of hills around here go more than that (Staple for about that gradient but it's only short so Coombe & Ranmore are probably my best bet as they are slightly longer & go up to about 15-17%, and the odd dash up Whitedown to really kick the legs!).
Dave - therein lies the problem.......I can see one on maymyride which says about 1,100m of climbing, but if I take the gpx file from the Roth website & upload it to ridewithgps it says about 1,600m, and if I upload that file to bikehike it says just over 2,000m!!
Cougie - that doe help in terms of gradients, thanks, but can't see anywhere where it shows overall elevation?
Tom - think I must have!! T1 I really didn't think I was dawdling so was quite shocked to see that was 21mins. Especially when you consider in T2 I went to the loo, had a deliberate sit down, did a complete change & slathered myself in sunscreen, and that was 22mins so still don't know what the heck I was doing in T1!!
The guy next to me in T2 actually had a cup of tea though, which totally made my day!!
Doing Roth next year which only has a 15hr cutoff, so if I can cut each transition to 10mins I'll have saved just over 20mins from the Bolton time for nothing! Trying to find some tri shorts that will be comfortable enough to wear the whole way around so only have to change tops & socks.