Question 1

What is a good triathlon time for a beginner?

Accepted Answer

A good finish time depends on the distance. For a Sprint triathlon (750m swim, 20km bike, 5km run), beginners typically finish in 1:15 to 1:45. For an Olympic distance (1.5km/40km/10km), expect 2:30 to 3:30. For a Half Ironman (70.3), 5:30 to 7:00 is a solid beginner time. For a full Ironman (3.8km/180km/42.2km), finishing under 17 hours (the official cutoff for most Ironman races) is an achievement in itself.

Question 2

Why is my run pace slower in a triathlon than in a standalone race?

Accepted Answer

This is called 'cumulative fatigue' or the 'brick effect.' After hours of swimming and cycling, your legs are pre-fatigued — glycogen stores are partially depleted, muscles are damaged, and your cardiovascular system has been working hard. Research shows run pace in triathlon is typically 5-25% slower than standalone running, depending on distance and experience. Brick workouts (bike followed immediately by run) are the key training method to reduce this effect.

Question 3

How do I calculate transition times for a triathlon?

Accepted Answer

Transition times (T1: swim-to-bike, T2: bike-to-run) depend on experience. Beginners typically take 2-4 minutes per transition, intermediates 1-2 minutes, and elites under 1 minute. To improve: practice your transitions, lay out gear logically, use elastic laces, and consider a race belt. In Ironman events, transitions can include changing clothes, so they tend to be longer.

Question 4

What is the fatigue factor in triathlon?

Accepted Answer

The fatigue factor represents how much your performance degrades during a triathlon due to cumulative effort. Swimming has no fatigue factor (it's the first discipline). Cycling is slightly affected by the swim (1-5% slower). Running is the most affected — expect 5-25% slower pace than fresh, depending on distance and experience level. This calculator from TrainingZones.io applies research-based fatigue factors to give you a realistic race time estimate.

Question 5

How should I pace my triathlon?

Accepted Answer

The golden rule is: start conservatively. Most age-groupers go too hard on the bike and pay for it on the run. For the swim, find your rhythm — don't sprint the start. On the bike, stay at 70-80% of your max effort and resist the urge to chase faster riders. Save energy for the run, where pacing matters most. A negative split on the run (second half faster) is the sign of a well-executed triathlon. Use this calculator to set realistic pace targets for each segment.

Triathlon Race Time Calculator

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Frequently Asked Questions

What is a good triathlon time for a beginner?

Why is my run pace slower in a triathlon than in a standalone race?

How do I calculate transition times for a triathlon?

What is the fatigue factor in triathlon?

How should I pace my triathlon?