All Terrain Runners

About All Terrain Runners

Join fellow runners, or wanna-be runners, for 1.5 hour sessions that include endurance running, along with obstacle course and strength training activities. Runs will take place at 4 different locations – Bayfront Park, Arastradero Preserve, Windy Hill and Waterdog Lake. Most runs are Sunday mornings between 8:30 a.m. – 10:00 a.m., with optional special events and races.

Schedule & Pricing for All Terrain Runners


Tuesdays 6:00 – 6:50 a.m.
Coach Lauren will lead Tuesday morning runs for Menlo Fit members who would like a group run during the week. Get out of your indoor routine and increase your run experience, perfect for anyone training for a run event or looking to add running into their fitness routine. All fitness levels welcome. Meet inside the Arrillaga Family Gymnastics Center for sign-in and stretch, then head out for the 50-60 min run around Menlo Park, Palo Alto, Atherton.


All Terrain Runners only
$56 per month – register today!
$160 per quarter- register today!
$605 per year- register today!

All Terrain Runners plus Masters
(Includes Lap Swim, Open Swim, Water Polo, Aqua Fit)
$125 per month – register today!
$356 per quarter – register today!
$1,350 per year- register today!

All-Access Membership (Level 5)
(Includes all of the above, plus Boot Camp and Triathlon Team)
$185 per month – register today!
$527 per quarter – register today!
$1,998 per year – register today!

Annual Administration Fee
Masters, AquaFit, Water Polo, and Tattersols memberships require an annual $30 administration fee; All-Access Silver and Gold Pass memberships (which includes Triathlon Team and Boot Camp) require an annual $60 administration fee. Monthly members are billed on the first day of the month and quarterly members are billed on the first day of the calendar quarter.

Student, Senior and Family Discounts
Student and Senior discounts are available for all memberships. Family discounts are available for family members participating in the same program. For these discounts, please contact the Service Center.

Give us a try!
Only $25 for 5 days! If you want to see what we’re all about and why we are unique compared to other local fitness programs, please come to a week of classes and check it out. Meet our instructors in action and try five days of classes for only $25. Applies to Boot Camp, All Terrain Runners, Lap Swimming, Open Swim, and Aqua Fit Water Fitness. Register with this special in our Service Center, (650) 330-2232.

If you would like to cancel your monthly or quarterly Fitness membership completely, please fill out the online Cancellation Form. Cancellation requests may also be taken in person through the Service Center, (650) 330-2232. Cancellation requests must be submitted by the 15th of current month to terminate recurring payment/membership for the following month.

Meet the Pros



Semisi Siu

Semisi is passionate about fitness and nutrition, and feels that they should be implemented as a lifestyle as opposed to it being a chore. He has been involved in athletics and fitness since he was a pre-teen, growing up in Aotearoa (New Zealand), participating in sports like Rugby, Aussie Rules, Cricket, Grass Hockey and Track & Field.

Semisi is native to the South Pacific Islands of Tonga, but grew up in Auckland, New Zealand and moved to California in 1995. In 2001 Semisi earned NASM, ACE & Apex nutrition certifications and worked as a Trainer Fit Pro for 24 hour Fitness in Scottsdale & Phoenix, Arizona. He returned to Menlo Park in 2008, and joined Menlo Swim and Sport as a Menlo Swim School Instructor, Camp Menlo Lead Counselor and Fitness Coach for Menlo Fit Boot Camp, which he truly enjoys – from helping, teaching, and coaching community members, to practicing what he preaches by taking the Wednesday morning 6am “Tabata” class. Semisi is also very proud of his Sunday Trail Runners group and welcomes any running levels – “the most challenging part is showing up!”

Semisi’s personality, passion, focus, professionalism and high octane energy will get you motivated, inspired, dancing, laughing, sweating & hungry for another tough, but fun filled class.

Specialties include: Performance Enhancement Specialist, Strength & Conditioning, Stretch & Flexibility Coach, TRX-Suspension trainer & DVRT Sandbag training.

Frequently Asked Questions


Q: I am still not sure this is right for me, who can I contact to ask questions?
A: Please contact Semisi Siu.


Upcoming Events

February 1-29
Taji 100 mile challenge: 29 days of running and/or walking.