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VO2 Max & Threshold Testing

Whether you’re an experienced racer, fitness enthusiast, or simply health-conscious, VO₂ testing provides precise insight into your current fitness — and exactly how to improve.

Your results pack includes

  • VO₂ max score
  • Aerobic & anaerobic threshold heart rates (AeT & AT)
  • 4 personalised training zones
  • Recommended recovery time
  • Calorie expenditure at specific heart rates

After the test, we’ll walk you through your data in a clear, easy-to-understand consultation and show you how to apply it in training.

Why this matters

VO₂ testing is the gold standard for performance assessment. But VO₂ max is only part of the story — your aerobic and anaerobic thresholds are the markers that truly shape effective training. With your unique profile, you’ll remove guesswork, target the right intensities, and train with confidence.

Add a Resting Metabolic Rate (RMR) test and you gain the full spectrum of insight into how your body works — from the energy you burn at rest to the intensities where you perform best. Together, these tests give you a complete blueprint for smarter training, better fuelling, and stronger results.

Enduraprep | Triathlon, Cycling & Running Coaching
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Lewis W. profile pictureLewis W.
22:06 30 Sep 25
I can't thank Coach Cronk enough!
After signing up for Ironman Wales, I quickly realised I had no idea how to train for such an event. A quick call with Lawrence helped ease my nerves (especially concerning the bike section) as he designed an easy-to-follow training plan.
Lawrence went above and beyond, providing weekly updates and offering little tips and tricks to help with future training sessions.
After just four months with Lawrence, I conquered the dragon and became an Ironman.
Christopher Y. profile pictureChristopher Y.
11:37 26 Sep 25
After not completing Ironman wales last year, I got in touch with Lawrence to go all in to complete it this year! He helped me achieve my goal, brought my fitness to a level that I’ve never had before! His guidance and knowledge helped me every step of the way, pushed me when needed and encouraged when I was in a low spot. Amazing experience!
Rhys H. profile pictureRhys H.
20:28 24 Sep 25
I had Lawrence from Enduraprep coach me for Ironman Wales. I couldn’t recommend him enough. Lawrence updated my training plan regularly and would amend it quickly when needed to. The training program was excellent and helped me reach my goal of being an Ironman. Lawrence was always reachable whether it be through phone, WhatsApp or email and would always be extremely helpful. He tailored the plan to my needs (bike/work schedule) which I really appreciated. I would recommend Lawrence to anyone looking to reach their goal and I will defiantly use Lawrence for my next big event.
pippa W. profile picturepippa W.
16:43 24 Sep 25
I recently completed Ironman Wales and couldn’t thank Coach Cronk enough for all his support and coaching to just get me to the start line!
I entered this race with no triathlon experience and not really any clue what I was doing but after a year of coaching I have managed to do 2 other triathlons and actually get down the finish line of an Ironman🏴󠁧󠁢󠁷󠁬󠁳󠁿

Cronk really took into consideration my currently capabilities and designed the training to fit me and my schedule. The monthly videos and assistance really helped to ease my worries and answer any ridiculous questions I have had for each triathlon I’ve done now (especially Ironman😅)

Thankyou so much for all your help. I can’t wait to do another one now!!
Photo from customer review
james H. profile picturejames H.
12:23 03 Aug 25
I have trained with Lawrence from Enduraprep for a few years now. He has helped me in taking over 45 minutes off my marathon PB, hours off my ironman PB, and numerous other personal best results across other race distances.

His advice and plans are always insightful, precise and tailored towards whatever event I am building up to. He is also very good at adjusting my plan to fit around my bust work schedule, and adjusting sessions with short notice if something changes in my week.

Highly recommend.
Ema P. profile pictureEma P.
09:26 27 Mar 25
Had rmr testing with Craig.
He was really nice, very welcoming, chatty and made me feel at ease straight away, super informative with all the information he gave me.
will definitely be going back in a few months , really happy with the service!

Also on the actual testing place is on beautiful grounds, so just a added bonus!

Thank you, Craig!
Alun G. profile pictureAlun G.
08:13 23 Jan 25
Top guy, Top service

Very knowledgeable
Rachel G. profile pictureRachel G.
14:55 05 Dec 24
Had a resting metabolic test with Craig and it was a great experience. Craig was very welcoming, made me feel quickly at ease and clearly explained the process. The results are really informative and helpful when thinking about how I manage my calorie intake. Having the information so clearly explained is actually really liberating when planning how to manage life and food intake for both weight loss and maintenance. Thank you Craig.
Chris T. profile pictureChris T.
10:18 25 Sep 24
Had a VO2 max test with Craig. Very good, lots of useful information and advice which I'll use to modify my training for mountaineering. Will get a re-test in six months.
Esmae E. profile pictureEsmae E.
19:09 25 Feb 24
Had a resting metabolic rate test with Craig and was a great experience! Craig is a lovely guy and explained the details of how everything would go. The test itself is very handy and is good to know if you want to be exact with how many calories your body needs daily. Willl be booking in again after finishing my diet!

Thankyou again

Lloyd
William M. profile pictureWilliam M.
07:21 19 Oct 23
Lawrence is an absolutely fantastic coach. Extremely knowledgeable, he designs and regularly reviews my training plan based on performance/plans/fatigue etc. Lawrence checks in regularly to see how training is going and provide feedback and my fitness (and race times!) have come on MASSIVELY since he started coaching me a year ago. Highly recommend.
Tom W. profile pictureTom W.
21:10 25 Sep 23
I worked with Lawrence at Enduraprep this year with the aim of completing Ironman Wales 2023. All the workouts are easy to access and understand on training peaks and email; weekly communication with Lawrence via video was really helpful in analysing the weeks training and talking through the plans for the upcoming weeks. The workouts, although obviously challenging, were pitched at the right level for my fitness and achievable. I was able to complete Ironman Wales in my target time and finished the run strongly which is definitely due to the training programme Lawrence had created for me. I would definitely recommend Lawrence at Enduraprep and I’ll be when I’ve chosen my next race!
Desert F. profile pictureDesert F.
12:39 25 Sep 23
I have been with Endrarep for almost 2 years. They have helped me constantly with my entry into Triathlons. Not only do they have progressive individualised training programmes, they also take the time out to check in and see how the training is going and then review and amend the programme as necessary. I have also helped at length pick suitable bike for my requirements at great length.

Highly recommend
Chris J. profile pictureChris J.
21:29 20 Sep 23
Lawrence has been very open and responsive to my need for information. Always willing to adjust plans around my personal circumstances. Looking forward to a successful 2024 with his guidance.
999GaryG profile picture999GaryG
09:04 19 Sep 23
I've been using Lawrence for the past 2 years and have found him to be very knowledgeable, supportive whilst also demanding. As an ageing triathlete competing at full and middle distance, I have found the training plan achievable and personal without needless junk miles thrown in but also having sufficient zone 4+ workouts to facilitate adaptations. During this time I have podiumed 4 times with two firsts, one runner up and one third.
Mayukhmoy M. profile pictureMayukhmoy M.
11:42 11 Sep 23
Lawrence is an excellent coach and helped me to get back to regular training.
Very easy to approach and always happy to help.
Definitely recommend him and Enduraprep.
David H. profile pictureDavid H.
08:49 11 Sep 23
Lawrence has coached me for 6 years and counting, from triathlon rookie to Ironman veteran. He has learnt how to get the best out of me as an individual and will build challenging but realistic training plans to help me achieve my goals. His methods are plans are continually evolving and I'm loving the new video check ins!
Rachel M. profile pictureRachel M.
15:45 09 Sep 23
Lawrence has been a great coach over the past year or so as I have trained for Ironman Wales via a marathon pb too. He has planned training around life events (my wedding, MSc modules, etc!) and helped me build back up from breaks in training. The weekly video check ins are really useful as you see your own training as a coach would. This means there is context to the comments and feedback. I would recommend Lawrence for triathlon / endurance training.
Stephen A. profile pictureStephen A.
17:20 08 Sep 23
Lawrence helped me achieve my goal of completing Ironman Wales having only completed a 70.3 and a few half marathons a long time ago. I had been using a generic training plan until around 2 months out from race day when I contacted Lawrence with an SOS message needing something a bit more tailored as I had plantar fasciitis and was also struggling with the bike. He was able to devise a plan that catered to my individual needs and was flexible around my changing work commitments. I have no doubt that without Lawrence I would have DNF’d. Instead he got me in shape and around a really challenging course.
Photo from customer review
Emma W. profile pictureEmma W.
07:24 07 Sep 23
Lawrence has been my coach for the last two years. During that time I have completed two marathons and two Ironman events, along with numerous shorter runs and triathlons. Lawrence has helped me to achieve PBs at each event, and get me onto the podium and into the world championships at my last Ironman. Even with a variable shift pattern, holidays and social commitments, Lawrence has provided a robust and flexible training schedule. He is always available for a last minute change to the programme when I have needed it.

How long does it take and what does it cost?

Each appointment lasts around 45–60 minutes (setup, test, review). Choose the option that best fits your goals:

  • Resting Metabolic Rate (RMR): £65
  • VO₂ Max Bike Test: £90
  • VO₂ Max Run Test: £90
  • 1 VO₂ Max Test + 1 RMR Test: £120
  • VO₂ Max Bike + VO₂ Max Run + RMR Test: £170

Contact Us

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Important Information

  • Appointments last approximately 45 to 60 minutes.
  • No food or drink 4 hours prior to testing (apart from water).
  • No stimulants (tea, coffee, cigarettes) within 4 hours of testing.
  • No exercise at all on the day of testing.
  • For best results, avoid exercise for 24 hours prior to testing.

VO₂ Testing – Frequently Asked Questions

What does a VO₂ test measure — and why are AeT & AT so important?
A VO₂ test measures oxygen uptake and also identifies your Aerobic Threshold (AeT) and Anaerobic Threshold (AT) via ventilatory markers. While VO₂ max tells you your top capacity, AeT & AT are more useful for training — they let you structure effective zones for endurance, tempo, and threshold sessions.
How does the VO₂ test work?
You’ll wear a mask and heart rate monitor on a bike or treadmill. Workload increases incrementally every 1–2 minutes until you reach maximum effort (typically 7–14 minutes), followed by a short recovery. We analyse your breath data to derive AeT, AT, VO₂ max, and personalized training zones.
Bike vs run VO₂ test — which should I choose?
Choose the modality you primarily train in — cycle or run. Thresholds differ by modality, and VO₂ values may vary. If you train both, consider doing both tests to get precise zones for each.
Am I fit enough to take the test?
Absolutely. VO₂ testing is suitable even if you're not currently fit. It establishes your baseline and gives you direction. Many athletes retest every 10–16 weeks to track progress.
Do you test blood lactate?
No needles needed — we identify thresholds via ventilatory markers (changes in breathing) that correlate closely with lactate threshold, without using blood sampling.
What results will I receive?
You'll receive a detailed report with your AeT, AT, VO₂ max, and custom HR/pace/power training zones. We'll explain how to apply those zones to your training.
How should I prepare for my appointment?
• Avoid hard training for at least 24 hours beforehand.
• No food or caffeine for ~4 hours prior (water is fine).
• Arrive rested and well hydrated.
• If cycling, you may bring your own bike (check with us ahead of time).
How long does it take and what does it cost?
Allow about 45–60 minutes (setup, test, review). The pricing is:
  • Resting Metabolic Rate (RMR): £65
  • VO₂ Max Bike Test: £90
  • VO₂ Max Run Test: £90
  • 1 VO₂ Max Test + 1 RMR Test: £120
  • VO₂ Max Bike + VO₂ Max Run + RMR Test: £170
How often should I re-test?
Every 10–16 weeks is a good schedule, especially after a training block or notable fitness change, to keep your zones accurate.