Question 1

How accurate are triathlon time predictions?

Accepted Answer

Predictions based on individual discipline PRs are typically within 5-10% of actual race times for experienced athletes. For beginners, actual times tend to be 10-20% slower due to transition inefficiency, pacing errors, and race-day nerves. Weather, course profile, and nutrition also affect results.

Question 2

Why is my predicted Ironman time so much slower than my PRs suggest?

Accepted Answer

Ironman applies significant fatigue multipliers. Your marathon pace after 180km of cycling is 20-40% slower than a fresh marathon. Your swim pace over 3.8km degrades from your 100m pace. These compounding effects are what makes Ironman uniquely challenging.

Question 3

How do transitions affect my total time?

Accepted Answer

For beginners, T1+T2 can add 6-10 minutes. Experienced athletes get this under 4 minutes. The biggest time savings come from practicing transitions: layout organization, wetsuit removal, and knowing exactly what goes where.

What's your triathlon finish time?