Classic Flatiron Routes

Colorado, United States, North America
Page Type Page Type: List
Additional Information County: Boulder
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Gerry Roach, ultimate compiler and maintainer of mountaineering lists, has climbed countless rock routes in the Flatirons. While creating his complete list and guidebook, he labeled some as being "Classic". He designates 53 "Classics" and also points out his personal "Top 10". Also, he states that "Any climber who climbs all the classic routes in this guide deserves the title Dr. Flatiron. Anyone who does that plus climbs a total of 100 routes has clearly graduated Summit Cum Laude!" We have extracted these sub-lists and cross referenced them with other information here on SummitPost. We hope this proves useful as a climbing reference. Both lists are arranged roughly from north to south, or right to left when looking west. Feel free to post any additional information that is needed.

Image Title
Photo by Boriss Andean

"Top Ten" Routes

Top 10
RockRouteRatingClosed Seasonally?**
First FlatironEast Face Center5.6SNo
Third FlatironEast Face5.0-5.2Yes
Third FlatironFriday's Folly5.7
Green Mtn. PinnacleTaking Care of Business5.6No
Stairway To HeavenStairway To Heaven5.3-5.4Yes
The BackporchEast Face5.6Yes
PellaeaEast Face5.5Yes
The FatironEast Face5.3-5.4No
The MaidenNorth Face5.6
The MatronNorth Face5.6Yes

**Most seasonal closures run from February 1st through July 31st.

"Classic" Flatiron Routes

Rock Route Rating Closed Seasonally?**
Gregory Amphitheater1st Pinnacle SE Face5.3Yes
Gregory Amphitheater2nd Pinnacle S Face5.2
Gregory AmphitheaterT-Zero West Face5.5
Gregory AmphitheaterSlot5.6
The SpyEast Ridge5.0-5.2No
First FlatironNorth Arete5.3-5.4
First FlatironBaker's Way5.3-5.4
Sunset FlatironetteChase the Sun5.3-5.4
Second FlatironDodge Block4th Class
Second FlatironFreeway4th Class
Third FlatironWinky Woo5.4Yes
Third FlatironEast Face South Side5.0-5.2
Queen Anne's HeadEast Face5.3-5.4
WC Field's PinnacleA Very Ament's Slab5.8
Tomato RockAnything goes but the south side is easiest.5.9 (or harder)No
Morning After aka “The Thing”East Face5.7
Challenger East Face5.4S
HammerheadYodeling Moves4th Class
Fourth FlatironEast Face5.3-5.4
RegencyEl Camino Royale4th Class
Fifth FlatironEast Face North Side5.0-5.2
Fifth FlatironEast Face South Side5.3-5.4
Hillbilly RockEast Face South Side5.0-5.2
Satan's SlabEast Face5.6SYes
Angel's WayAngel's Way5.0-5.2
Achean PronouncementEast Face5.7
DreadnaughtPrimal Rib5.4S
FrontporchTiptoe Slab5.2SNo
FiFi Fun5.1
FoQuadratic Equation5.6
Der FreischutzFree Shot4th Class
Der FreischutzSouth Ridge5.0
Dinosaur RockEast Face5.4
Northern Dinosaur EggRehatch5.5
Southern Dinosaur EggHatch5.5
Seal RockEast Face South Side5.4S
OnocleaEast Face5.3-5.4Yes
Fiddle HeadEast Face5.3-5.4
The SlabDiagonal5.0-5.2No
Central Shanahan CragSouth Face5.4
Central Shanahan CragSE Ridge of S. Summit4th Class
Tiny TowerEast Face5.6
MatronEast Ridge5.5Yes

**Most seasonal closures run from February 1st through July 31st.

Seasonal Closures

Every year, many of the Flatiron formations and surrounding lands are closed due to raptor nesting. These areas are mainly off-limits from February 1st through July 31st, but the dates can change at any time. The city of Boulder monitors the birds and makes an annual judgment call on when climbing and even hiking is allowed. Usually the closures are well marked on-site by large signs, but pay attention when on trail as it is not always obvious. Please heed these closures since violations can result in large fines and even jail time. Also, repeated issues could lead to permanent closures of certain formations. People who live near the Flatirons often view the hills and calls will be made if trespassers are seen. Do not be "that guy" who ruins it for everybody.

Detailed descriptions and maps of the closures can be found on the OSMP page. It is always a good idea to double check ahead of time so you can adjust your plans accordingly.



Parents refers to a larger category under which an object falls. For example, theAconcagua mountain page has the 'Aconcagua Group' and the 'Seven Summits' asparents and is a parent itself to many routes, photos, and Trip Reports.