As new roads were built, paved or found since the 2nd Edition of The Complete Guide to Climbing By Bike (Nationwide Guide) was published, below are updates for several categories. 

100 Most Difficult Climbs - 4 new climbs were found that now rank in the top 100 (5 others had the pavement extended or bike access granted).  Of these 9, 8 are new to the top 100 most difficult climbs  which means #92 in the current book is now #100.

10. Waipoli Road, HI - the state paved its upper half since I visited, a monster climb

13. Powder Mountain, UT - the ski resort at its top extended the pavement, even more difficult now

28. Maggie Valley Country Club, NC - A 13% average grade monster was well hidden within the trees

49. Castle Valley/Gateway, UT - I just missed the upper section of this big hill previously

51. Hicks Road North/Mt Umunhum, CA - the upper 1.0 miles of this one opened to bikes several yrs ago

64. Hicks Road South/Mt Umunhum, CA - for the same reasons as the above climb

71. Gaddis Branch Road, NC - a brand new, super steep road in western NC

85. Eagles Nest, NC - I just missed this very solid climb 

86. Dogwood/Mountain/Summit Drive, NC - The steepest test you will find was hidden in thick woods

5 Steepest Miles (2 steepest are new, remainder are the same):

1. Summit Drive, NC (mile 0.0-1.0)    - 17.8%

2. Rich Cove Road, NC (mile 0.5-1.5) - 17.0%

5 Steepest Half Miles (#1 and #3 are new)

1. Waipi'o Valley Road, HI (mile 0.1-0.6) - 23.4%

2. Kingsley Hill Road, MA (mile 0.0-0.5)  - 19.2%

3. Summit Drive, NC (mile 0.2-0.7)        - 18.6%

10 Steepest Climbs (min 1.8 miles long) (#1 and #3 are new)

1. Dogwood/Mountain/Summit Drive, NC - 14.7%

2. Old Priest Grade, CA                          - 13.1%

3. Maggie Valley Country Club, NC          - 13.0%

Email me at extreme.press@yahoo.com for more information if needed