Ballikayalar (or Honey Crag in Turkish) is the best outdoor climbing near Istanbul.
It is about an hour drive from the city of 15 million and consists of over 70 routes on limestone. The lines range from 7 to 35m, and most fall within a difficulty rating of 5.10 to 5.12 (or VI to IX- in UIAA). Many of the older routes were originally climbed as trad, and now that they are bolted the line naturally follow the cracks. There are two main sectors, the Left and the Right, as in, on the Left or Right of the valley (when peering into it).
Percussion: VI/VI+. Originally climbed as a trad route (by Emre and others), this follows a thin line on the inner side of a cave. It involves lean-backs, bridging your feet wider than expected, and big reach ups. It is quite pumpy.
Davul (Drum): VI+: Emre had the first ascent on this one. This is pumpy, featuring big, juggy holds, bigger reaches and a lot of lean-backs. Drum and Percussion are meant as brothers of sorts, and their names allude to the pounding your arms take when climbing them.
How to Get There
The easiest way is by car. Take the E80 or D100 East towards Ankara. The closest town is Gebze.Public Transport: TheCrag.com and RockClimbing.com have suggestions for how to get there by bus. I won’t pretend to give advice here since I didn’t try this myself.
When to Go
We started in a corner on the Left Sector away from the sun. The closest area to the entrance of the Left Sector faces the East and was receiving direct sun when we arrived. Around the bend, the sectors stayed in the shade until mid-afternoon. It had rained two days before and the routes were still wet in the shade. The Right Sector receives sun nearly all day.
You can pick up food and snacks in Gebze. There are several bodegas and cafes right in town.If you need climbing gear, Istanbul is unfortunately lacking in this regard. I only found two shops that sell climbing shoes (K2 Outdoor and Everest Outdoor). Atlas Outdoor had some draws and biners. Decathalon also sells some gear, but I didn’t check out the selection.
Climbing Partner Istanbul Facebook Group (I used this to originally connect with Sevki, via Taha. Thanks again!)
A bit of history about climbing in Turkey via an interview with Dogan Palut
Mountain Project (some beta on a limited set of routes)
TheCrag (limited route information)
UKClimbing (many listed routes, not much info beyond this)
RockClimbing.com (directions, some listed routes)
Guidebook (features 10 major climbing areas in Turkey)