By Jacqui Saxon, BTF Level 2 coach, Trisutto certified, mentored by Brett Sutton. Started triathlon at 52; raced for Great Britain at 55. Last updated: 20 October 2026.
Most people are race-ready for a sprint triathlon in twelve to sixteen weeks, and it takes longer if you are starting from nothing and less if you already move. It depends less on age or “natural fitness” than on where you are starting from: can you already swim, ride and run a bit, or are you starting from the sofa? Here is the honest breakdown by starting point.
That is the short answer. The real answer depends on which of these three people you are. If you are wondering whether you are too old to start, read am I too old to start triathlon? first.
You have most of the pieces. You just need them stitched into a plan and pointed at a date. Twelve to sixteen weeks of steady training, three to four hours a week, gets you comfortably round a sprint (400m swim, 20km bike, 5km run). No heroics required. Consistency beats intensity every time.
Give it four to six months. The swim is rarely the limiter here. It is building the aerobic base to ride and run without falling apart. Start at two to three hours a week and build gradually. Rushing this stage is how people get injured and quit, and slow and steady genuinely is faster in the end.
Six to nine months, and that is not a discouraging number. It is a realistic one. We have taught hundreds of adults front crawl from complete scratch, some in their 50s and 60s, and some who could not put their face in the water on day one. The swim takes about eight weeks on its own (see how to learn front crawl as an adult). Bike and run fitness build alongside it, not after it.
Every generic training plan gives you one timeline because it does not know you. We do, because we build your plan around your actual week, including your shifts, your family and how last week went, not a template with your name pasted on top. That is the whole reason coaching exists instead of a PDF. See our online triathlon coaching.
Nobody needs to train fifteen hours a week for a first sprint triathlon. Three to four hours is enough for most beginners: one swim, one bike session, one run, and a bit of overlap as race day gets closer. Easy pace means easy. About 80% of your running should be at a pace where you could hold a conversation.
You do not need a £6,000 bike, or even a £1,000 one. We have coached people to their first race on a secondhand road bike from 2009. A roadworthy bike, something to swim in, and a pair of trainers is the entire kit list. The gear industry wants you to think otherwise. Ignore it.
We have never made an athlete do an FTP test. We train by feel. We want to know how hard something felt, not what a power meter said. It is the Trisutto way, and it gets beginners fit without turning training into a second job managing data.
It is rarely fitness. It is trying to do too much too soon, ignoring a niggle until it becomes an injury, or picking a plan that does not fit a real life with a job and a family in it. Steady, consistent, slightly boring training beats a heroic January every single time.
If you can already move a bit, sixteen weeks and three to four hours a week gets you to a sprint start line. If you are starting from nothing, six to nine months does the same job properly, including learning to swim. Either way, the training itself matters less than starting it. I sat in a van and watched my first event through the windscreen. Two weeks later I crossed a start line instead. That is the only timeline that really counts. If you want help with the swim, see our swim coaching.
Around six to nine months if you cannot yet swim front crawl or have not trained before. If you already swim, ride and run a little, twelve to sixteen weeks is enough.
Most beginners need three to four hours a week: one swim, one bike session and one run, building gradually as race day approaches.
No. Front crawl can be learned in about eight weeks as an adult, alongside building bike and run fitness, not before it.
Give yourself six to nine months and start at two to three hours a week. The base-building stage matters more than speed, and rushing it is what causes injuries and dropouts.
No. A roadworthy bike, something to swim in, and trainers are the entire kit list. We have coached people to their first race on a secondhand road bike.
We're Coaches Jacqui and Oliver Saxon, the Animis Coaching Team.
We are a mom and son coaching team who have changed our lives through the sport of triathlon. We aim to break down the mysteries of triathlon training and show you, the avid traithlete, how simple and flexible it can be so triathlon training really does become part of your lifestyle and not just a hobby.
