How Much Triathletes Should Train For A Half-Ironman 70.3

3 Aug 2020 · 46 min
Episode

3 Aug 2020 · 46 min

0:00

Gerard Donnelly breaks down Half-Ironman training: spend 15% of your time on swim, 50% on bike, 35% on run. Prioritize endurance work and bike-to-run practice. Some sessions matter far more than others, so weight your training toward the highest-value work.

Questions this episode answers

1900 meter swim, 90 km ride, half‑marathon run

Approximately 15% swimming, 50% riding, 35% running

~30 minutes swim; ~2:00–2:45 ride; ~1:45–1:55 run (plus transitions)

August 3, 2020

Chapters

More from Gerard

1:20:17
Podcast

Are Electrolyte Supplements a Scam? Dr. Alan McCubbin Explains

2w ago
59:35
Podcast

What Actually Works in Training in 2026 (And What's Just Noise)

1mo ago
1:08:32
Podcast

The Truth About Peptides In Sports (With Dr. Harry)

1mo ago
54:01
Podcast

Why This Ironman Hired TriVelo After Going Sub 9 - Alex Coe

2mo ago
1:09:07
Podcast

Tom & Roland Rollercoaster Pro Ironman in Cairns

2mo ago
59:32
Podcast

Running’s Most Insane World Record Was Just Broken (Coaches React)

2mo ago
1:04:01
Podcast

How to Master Open Water Pacing, Swim Anxiety, and Stroke Mechanics - Effortless Swimming

3mo ago
PodcastThe Medical Student Beating Full-Time Pros - Matthew Marquardt
Podcast

The Medical Student Beating Full-Time Pros - Matthew Marquardt

4mo ago
Podcast38 Years of Triathlon Training Lessons in 67 Minutes
Podcast

38 Years of Triathlon Training Lessons in 67 Minutes

4mo ago
PodcastHow Grace Thek Finally Solved her Constant Injuries
Podcast

How Grace Thek Finally Solved her Constant Injuries

4mo ago
PodcastHow He Added 100 Watts in Just 18 Months
Podcast

How He Added 100 Watts in Just 18 Months

4mo ago
See all content