Private Instruction



  • $40 to $60 per hour, per individual

  • Individuals that sign up as part of a group of 2 or more (not to exceed 6 participants) receive a 50% discount on each additional participant.

  • Sender One members receive a 15% discount on Private Instruction.


To contact an instructor or schedule an appointment, please fill out the registration form. The information provided on this form will allow us to put you in contact with an instructor based on your needs.


Kristin Baca

Kristin Baca


Kristin’s years of experience and dedication to the sport of rock climbing make her an inspiring mentor for climbers of all levels and ages. Kristin started climbing nine years ago in Southern California in local gyms and in outdoor areas like Joshua Tree, and Echo Cliffs.  A well rounded climber, she enjoys all types of climbing from bouldering to alpine. Kristin specializes in crack climbing and sport climbing.

Randy Casillian

Randy Casillian

Instructor / Route Setter

A SoCal native, Randy has been climbing since 2006 and it has turned into both a career and a way of life, through route setting all of the gyms in Orange County, studying climbing movement, and of course, actually climbing! He enjoys both bouldering, sport climbing, and is trying his hand at doing more trad routes.

Goldie Szto

Goldie Szto

Head Instructor / Youth Coach

With over ten years of climbing experience, Goldie is always excited to share her passion and knowledge of the sport. She has dedicated herself to constant improvement  and  specializes in sport climbing and traditional climbing. She is a talented instructor who can help both experienced and inexperienced climbers explore their goals and reach them.

Wes Palka

Wes Palka

Adaptive Climbing Coach / Youth Coach

Wes’s background in competitive sports, youth coaching, and rock climbing make him an incredible mentor and role model for young climbers. Individuals who are interested in seeking instruction as a new climber or looking for a positive role model to introduce young people to climbing should contact Wes.

Annie Semmelroth

Annie Semmelroth

Outdoor Instructor

Annie is the ideal instructor for those interested in making the transition from the climbing gym to the crag. She is one of the owners of local guiding service Stone Adventures and is a PCGI certified instructor. Annie has been climbing for over a decade and has thousands of climbs under her belt. Many have commented that Annie’s smooth and personable teaching style is top notch!


Sender One Climbing, Orange County
1441 S. Village Way
Santa Ana, CA 92705


Climbing Gym
Mon – Fri : 6am to 11pm
Sat : 8am to 10pm
Sun : 8am to 8pm

Sender City (formerly known as Funtopia)
Daily : 10am to 6pm


Climbing Gym
(714) 881-3456

Sender City
(714) 881-3386

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