Most age-group triathletes hire the wrong coach. They pick a triathlon coach because the sport is called triathlon, or they pick a cycling coach because the bike is the longest leg. Neither logic holds up once you look at where time actually leaks on race day.
The decision isn't about the sport label. It's about which discipline is costing you the most minutes, and whether your current training load is being managed or just accumulated. Those are different questions with different answers.
This piece gives you a framework. Six scenarios, clear recommendations, no hedging.
What a triathlon coach actually does
A triathlon coach periodises three sports simultaneously. That sounds obvious until you see what it requires in practice. A Tuesday bike VO2 session has to account for Wednesday's run quality, Thursday's swim set, and Saturday's long ride. Miss that interaction and you train hard but race slow.
The core job is load management across disciplines. Joe Friel, whose Triathlon Training Bible is the reference text in the sport, frames it as protecting the limiter while maintaining the strengths. For 80% of age-groupers, the limiter is the run off the bike — which means bike sessions have to be built backward from what the run can absorb the next day.
Good triathlon coaches also handle race-specific work. Brick sessions that mimic the actual neuromuscular demand of T2. Pacing protocols for the bike that leave you with 75–80% of fresh-legs run pace available. Fuelling strategies that get 90g of carbs per hour in during the bike without wrecking the gut for the run.
What they don't always do well is deep bike specifics. Many triathlon coaches come from a run or swim background and treat the bike as the long aerobic session in the middle. They miss aerodynamic gains, position optimisation, durability work at race intensity after three hours, and the specific power profiles that separate a 5:15 Ironman bike split from a 4:50.
That gap is why the bike-specialist triathlon coach exists — and why we built triathlon bike coaching as a specific offering rather than a generic three-sport service.
What a cycling coach actually does
A cycling coach builds one thing: bike performance. Power at threshold, durability over four to six hours, repeatability of hard efforts, and increasingly, aerodynamic optimisation. Dan Bigham, former UCI Hour Record holder and now a performance engineer at Red Bull-Bora-Hansgrohe, has shown that position and equipment choices often deliver 15–30 watts of free speed at the same physiological cost — which most age-group triathletes leave on the table.
The training model is usually simpler than triathlon. Two to four key sessions per week, long endurance work on the weekend, and a periodisation that peaks for one or two events. Prof. Stephen Seiler's polarised model — roughly 80% of training below the first lactate threshold, 20% above the second — is the dominant framework, and it maps cleanly onto a single-sport schedule.
What cycling coaches don't do is budget for fatigue outside the bike. If you tell a cycling coach you also run 40km per week and swim four times, most will nod and prescribe the same bike sessions they'd give a category 2 road racer. The sessions are correct in isolation. They're wrong in context.
This matters because bike training has a long shadow. A two-hour sweet spot session at 88% FTP leaves residual neuromuscular and glycogen fatigue that degrades run quality for 24–48 hours. A cycling coach doesn't see that cost because it shows up in a session they're not writing.
For a pure cyclist, a cycling coach is the right call. For a triathlete, it's the right call only in specific circumstances covered below.
The 'bike as weak discipline' case
Here's the first clear scenario. You finish mid-pack on the swim, mid-pack on the run, and bottom third on the bike. Your FTP is 2.8 W/kg and you're racing 70.3. The bike is costing you 15–25 minutes versus athletes with similar run and swim splits.
In this case, the bike isn't just a weakness — it's the leverage point. Fixing it returns more minutes than any other intervention. Dan Lorang, who coached Jan Frodeno and Anne Haug to Ironman world titles before becoming head of performance at Red Bull-Bora-Hansgrohe, has been explicit that for triathletes with a clear bike weakness, the bike has to become the organising discipline of the training week for 12–16 weeks at a time.
The right coach here is a triathlon coach with genuine bike expertise, not a cycling coach. You still need someone managing the run and swim so they don't regress while you rebuild the bike. But bike sessions need to be prescribed by someone who understands power curves, durability, and position — not someone treating the bike as aerobic filler.
Watch out for triathlon coaches who prescribe generic "2 hours Z2 + 4x8 at threshold" bike sessions week after week. That's maintenance, not development. Development looks like specific power targets, progressive overload on durability work (the last hour of a four-hour ride at 75% FTP is where races are won), and regular re-testing.
If you're in this bucket, a single coach with bike specialism is the answer. Two coaches is overkill and creates communication overhead you don't need.
The 'all three disciplines plateaued' case
Different scenario. You've been racing for three to five seasons. Your times have flatlined. You're not weak anywhere in particular — you're just not getting faster. Training feels repetitive. Race results sit within a 2% band year over year.
This is almost never a single-discipline problem. It's a load management and periodisation problem. You're probably training at the same intensity distribution every week, peaking too flat, and never accumulating the specific adaptations that break through a plateau. Prof. Seiler's work on intensity distribution shows that most plateaued athletes are grinding too much tempo and not enough true low-intensity or true high-intensity work.
A cycling coach won't fix this because the problem isn't the bike. A generalist triathlon coach might not fix it either if they're running the same template they've used for five years. What you need is a coach who audits your last 12 months of training data, identifies the intensity distribution, and rebuilds the periodisation from first principles.
This is where our cycling coaching philosophy overlaps with the triathlon work. The Not Done Yet programme's five pillars — training, nutrition, strength, recovery, accountability — exist because plateaus are almost always multi-factorial. Training alone gets you 60% of the way. The rest comes from sleep, fuelling, strength work, and honest weekly check-ins.
One coach, full audit, 16-week rebuild. Two coaches would just split the problem and obscure the diagnosis.
When both coaches at once actually works
There's one scenario where two coaches is correct: you're a serious age-grouper chasing Kona or 70.3 Worlds qualification, and your triathlon coach openly lacks bike depth. In this case, you hire a cycling coach to write the bike sessions and a triathlon coach to integrate them with swim and run.
This works only under three conditions. First, both coaches talk directly — weekly, not via you as intermediary. Second, one coach has final authority on total weekly load, and the other accepts that authority. Third, the cycling coach understands triathlon context and will adjust sessions when the run needs protecting.
In practice, this is rare. Most dual-coach setups fail because the coaches don't communicate and the athlete ends up managing the conflict. You get a Tuesday VO2 bike session and a Wednesday threshold run prescribed by two people who don't know about each other's plans. The result is a Thursday where everything is compromised.
The cleaner path is a single triathlon coach with bike specialism. That's the model we built at Roadman — one coach, bike depth, all three disciplines integrated. If you're considering dual coaching, ask yourself honestly whether your current triathlon coach is actually weak on the bike, or whether you just want more bike work. Those are different problems.
What to look for in a bike-specialist triathlon coach
Five markers separate a bike-specialist triathlon coach from a generalist.
First, they ask for your power file history before they prescribe anything. Not just FTP — the full curve, durability data, and how power holds at hour three and four. If they start with an FTP test and nothing else, they're working from a template.
Second, they talk about position and aerodynamics, not just watts. A 15-watt aero saving at 40kph is worth more than a 15-watt FTP gain, and it doesn't cost training stress. John Wakefield, Red Bull-Bora-Hansgrohe's Director of Development, has been clear on the podcast that aero testing is now standard even at junior World Tour level. Age-group triathletes should treat it the same way.
Third, they protect the run. Ask them directly: how do you decide when a bike session gets shortened because the run is the priority? If they don't have a clear answer, they're not managing load — they're stacking it.
Fourth, they have data on their athletes' bike split improvements, not just finish times. Finish time improvements can come from anywhere. Bike split improvements prove the coach can coach the bike.
Fifth, they're coachable themselves. Dan Lorang has talked about how the best coaches update their models every season based on new research and athlete data. A coach who's been writing the same plans for ten years isn't a specialist — they're a template.
If you're ready to have that conversation, the coaching application takes about ten minutes and gets you a direct call to diagnose where your time is actually leaking. Start there, then decide.
