- Drop-In
- 20 EUR
- Monthly
- 115 EUR
The Verdict on CrossFit Castellum
Suits athletes who want small-group CrossFit coaching with a fixed start through a one-on-one Fundamentals session. Drop-ins require prior CrossFit experience, so confirm that before you arrive.
Best for: Experienced CrossFit athletes, Beginners starting with Fundamentals, Strength and conditioning training
Equipment & Climate
Rig, barbells, plates, kettlebells, dumbbells and more. Free parking in front of the box. Climate is not described in the sources.
Schedule & Drop-In Rules
Monday to Friday 08:00 to 21:30. Saturday 09:00 to 13:00 on one page, and 09:00 to 14:00 on another page of the same site. Sunday 09:00 to 12:00. Class times are in the SportBit app. Drop-ins require prior CrossFit experience. New members start with a one-on-one Fundamentals training and assessment.
Pricing Notes
Official prices include VAT. Rittenkaart is 10 classes for 140 EUR (14 EUR per class), valid 5 months. Memberships run in 4-week blocks: 9 classes for 85 EUR (9.45 per class), 13 classes for 97.50 EUR (7.50 per class), and 35 classes or unlimited within the month for 115 EUR. All memberships carry a 1 calendar month notice period. A third-party Google AI Overview result also reports a 20 EUR drop-in, but that is not an official price and is not used in the price columns.
Coaching
Site describes well-trained coaches, professional coaches and small groups. Coaching languages are not stated.
Good to Know
- Address
- Molensteijn 5-6, 3454 PT Utrecht, De Meern, in the Strijkviertel industrial estate[1]
- Free trial class
- A free trial class can be booked online before joining[2]
- Fundamentals
- One-on-one training and assessment, scheduled with a coach when you start[2]
- Cancellation
- Memberships require 1 calendar month notice to cancel[2]
- Parking
- Free parking in front of the box[1]
- Kids and Teens
- Separate kids and teens classes are offered[1]
Visitor Guide
Getting there
CrossFit Castellum sits at Molensteijn 5-6 in the Strijkviertel industrial estate, in De Meern on the Leidsche Rijn side of Utrecht. The site describes it as easy to reach by bike or car, with free parking in front of the box. No public transport stop is listed.
Before you come
Drop-ins are for people with CrossFit experience. New members start with a one-on-one Fundamentals training and assessment, which a coach schedules with you. A free trial class can be booked online first.
Prices
A drop-in costs 20 EUR including VAT. A 10-class card costs 140 EUR and is valid for 5 months. Monthly memberships run in 4-week blocks from 85 EUR.
Schedule
Weekday hours run from 08:00 to 21:30. Saturday and Sunday hours are shorter. Check the SportBit app for class times and to book.
Training floor
The box has a rig, barbells, plates, kettlebells and dumbbells. Classes are small group sessions, and open training is included in memberships.
Verified Sources
3 sources checked on 2026-11-11. Prices come from the gym's own pages.
Verified Sources
3 sources checked on 2026-11-11. Prices come from the gym's own pages.
- 1.Home - Crossfit CastellumOfficial site
crossfitcastellum.com
- 2.Member worden - Crossfit CastellumPricing page
crossfitcastellum.com
- 3.Google AI OverviewGoogle Maps
google.com