This 20 week plan will get you prepared for a strong race. Building slowly over the 20 weeks and dialing in segments of speed and power. All Trainer rides can be traded out for similar effort road rides if no trainer is available or if you just need to get outside. Trainer rides can also be traded in for Computrainer Rides or Zwift FTP Builder rides. All 5 Mile Benchmark Test can be traded for Zwift FTP tests or similar.
For the Ironman 70.3 Texas (Galveston) you must be prepared for long flats with lots of wind. Use hill riding on the bike to make you stronger for a windy ride. So go find yourself some hilly training grounds.
Be prepared for any kind of weather. Wind, Rain, Blazing Sun. You just never know what you are going to get, About 2 weeks out start watching the weather patterns. Nothing really matters till 3 days before however.
Feel free to email me at firstname.lastname@example.org if you have questions on these workouts.
Enjoy and see you at the finish line!