20-WEEK IRONMAN 70.3 TRAINING PLAN: WEEKS 14–20
by OXB Staff on Oct 01
20-WEEK IRONMAN 70.3 TRAINING PLAN: WEEKS 14–20

This training plan is designed for those who want to train for a half Ironman. The plan lasts 20 weeks.

Start with 8 weeks of base training, followed by 6 weeks of build-up training and 6 weeks of peak training. Odd-numbered training weeks include 3 swimming sessions, 3 cycling sessions, and 3 running sessions. ”

Weeks 2, 6, 10, 14, and 18 include 3 swimming sessions, 2 bike rides, 3 running sessions, and one combined bike-run workout. Weeks 4, 8, 12, 16, and 20 include 3 swimming sessions, 3 bike rides, 2 running sessions, and one combined bike-run workout. There is a rest week every four weeks. The final 10 days constitute a “cool-down” period. The plan begins with 3.5 km of swimming, 2.45 hours of cycling, and 1.45 hours of running per week. The peak is reached in the 17th week with 6 km of swimming, 5.20 hours of cycling, and 3.07 hours of running.

Week 14

Monday

Rest

Tuesday

Cycling Interval Variations: 1:15

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 4 x 3-minute intervals at VO2 max intensity with sufficient active recovery to reach a total workout time of 1.15 h (including warm-up and cool-down)

Cool-down: 10 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 1.8 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 6 x 100 @ moderate aerobic intensity, RECOVERY=0:05

4 x 100 at VO2 max intensity, REST = 1:00

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Run Variations Intervals: 40 Minutes

Warm-up: Run for 10 minutes at low aerobic intensity

Workout: 20 sets of 30 seconds at VO2 max intensity with 30 seconds of recovery at low aerobic intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bike: 1:30

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 10 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swimming + Sprint: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 3 x 300 @ intensity threshold, REST = 0:45

4 x 50 at fast intensity, REST = 0:20

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Fundamentals Run: 50 Minutes

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 30-minute run at moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

Corsaning Strides: Workout: 6 x 20-second runs at a fast pace with 40-second recovery periods immediately after completing today’s running workout

Saturday

Bike Basics: 1:45

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 25 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Sunday

Basic Swimming: 2.2 km

Warm-up: 300 @ low aerobic intensity

Workout: 1,800 @ moderate aerobic intensity

Cool-down: 300 @ low aerobic intensity

Combined Workout: 1:45

Warm-up: 1 hour and 15 minutes on the bike at moderate aerobic intensity

Workout: 30-minute run at moderate aerobic intensity

 

Week 15

The peak phase of training begins this week. Your long workouts on the weekends will get really long during this 6-week phase to ensure you’re able to go the distance on race day. The second training priority is threshold-intensity training in all three disciplines. Long combined workouts, a swimming time trial, and an optional Olympic-distance triathlon tune-up also help build race-specific conditioning.

Monday

Rest

Tuesday

Bike Time: 1 Hour

Warm-up: 13 minutes at moderate aerobic intensity

Workout: 2 sets of 12 minutes at threshold intensity with 10 minutes of recovery

Cool-down: 13 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 6 x 100 @ moderate aerobic intensity, RECOVERY=0:05

5 x 100 at VO2 max intensity, REST = 1:00

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Cooking Time: 36 Minutes

Warm-up: Run for 10 minutes at low aerobic intensity

Workout: 16-minute run @ threshold intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bike: 1:30

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 10 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swimming + Sprint: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 3 x 300 @ intensity threshold, REST=0:30

4 x 50 at fast intensity, REST = 0:20

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Fundamentals Run: 50 Minutes

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 30-minute run at moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

Corsaning Strides: Workout: 6 x 20-second runs at a fast pace with 40-second recovery periods immediately after completing today’s running workout

Saturday

Bike Ride: 2:45

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 2 hours and 25 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Sunday

Basic Swimming: 2.3 km

Warm-up: 250 @ low aerobic intensity

Workout: 2,000 @ moderate aerobic intensity

Cool-down: 250 @ low aerobic intensity

Long Run: 1:20 h

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 1-hour run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

 

Week 16

This is a recovery week.

Monday

Rest

Tuesday

Cycling Time: 55 Minutes

Warm-up: 17 minutes at moderate aerobic intensity

Workout: 22 minutes @ intensity threshold

Cool-down: 16 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 1.5 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 4 x 100 @ moderate aerobic intensity, RECOVERY=0:05

4 x 100 at VO2 max intensity, REST = 1:00

Cool-down: 300 @ low aerobic intensity

Running Time: 34 Minutes

Warm-up: Run for 10 minutes at a low aerobic intensity

Workout: 14-minute run @ threshold intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bike: 1 hour

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 40 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swim + Sprint: 1.3 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 3 x 200 @ intensity threshold, REST = 0:45

Cool-down: 300 @ low aerobic intensity

Fundamentals Run: 40 Minutes

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 20-minute run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

Corsaning Strides: Workout: 4 x 20-second runs at a fast pace with 40-second recovery periods immediately after completing today’s running workout

Saturday

Bike Recovery: 20 Minutes

Warm-up: 10 minutes at recovery intensity

Cool-down: 10 minutes at recovery intensity

Sunday

Olympic-distance triathlon

If you can’t find a triathlon to enter today, try doing a triathlon on your own

Warm-up: Swimming 1.5 km

Commute: 40 km by bike

Cool-down: 10 km run

 

Week 17

Monday

Rest

Tuesday

Bike Time: 1:05

Warm-up: 21 minutes at moderate aerobic intensity

Workout: 24 minutes @ intensity threshold

Cool-down: 20 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 5 x 100 @ moderate aerobic intensity, RECOVERY=0:05

6 x 100 at VO2 max intensity, REST = 1:00

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Cooking Time: 36 Minutes

Warm-up: Run for 10 minutes at low aerobic intensity

Workout: 16-minute run @ threshold intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bike: 1:30

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 10 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swimming + Sprint: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 2 x 400 @ intensity threshold, RECOVERY=1:15

6 x 50 @ fast intensity, REST = 0:20

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Fundamentals Run: 55 Minutes

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 35-minute run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

Corsaning Strides: Workout: 4 x 20-second runs at a fast pace with 40-second recovery periods immediately after completing today’s running workout

Saturday

Bike Ride: 3 Hours

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 2 hours and 40 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Sunday

Basic Swimming: 2.3 km

Warm-up: 250 @ low aerobic intensity

Workout: 2,000 @ moderate aerobic intensity

Cool-down: 250 @ low aerobic intensity

Long Run: 1:30

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: Run 1 hour and 10 minutes at moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

 

Week 18

Monday

Rest

Tuesday

Bike Time: 1:10 h

Warm-up: 22 minutes at moderate aerobic intensity

Workout: 26 minutes @ intensity threshold

Cool-down: 22 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 5 x 100 @ moderate aerobic intensity, RECOVERY=0:05

6 x 100 at VO2 max intensity, RECOVERY = 0:45

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Running Time: 38 Minutes

Warm-up: Run for 10 minutes at low aerobic intensity

Workout: 18-minute run @ threshold intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bike: 1:45

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 25 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swimming + Sprint: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 2 x 400 at intensity threshold, RECOVERY=1:00

6 x 50 at fast intensity, REST = 0:20

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Fundamentals Run: 1 hour

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 40-minute run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

Corsaning Strides: Workout: 4 x 20-second runs at a fast pace with 40-second recovery periods immediately after completing today’s running workout

Saturday

Combined Workout: 2:30

Warm-up: 1 hour and 45 minutes on the bike at moderate aerobic intensity

Workout: 45-minute run @ moderate aerobic intensity

Sunday

Basic Swimming: 2.3 km

This is a timed swim workout. Swim at maximum intensity, as if you were in a race.

Warm-up: 200 @ low aerobic intensity

Workout: 2,112 (1.2 miles) @ maximum intensity

Cool-down: 200 @ low aerobic intensity

Fundamentals Run: 30 Minutes

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 10-minute run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

 

Week 19

Your pre-race taper begins on Thursday. From this day forward, your training will gradually decrease (compared to previous weeks) to ensure that you are well-rested and ready to perform on race day.

Monday

Rest

Tuesday

Bike Time: 1:15

Warm-up: 19 minutes at moderate aerobic intensity

Workout: 2 x 14 minutes at threshold intensity with 10 minutes of recovery at moderate aerobic intensity

Cool-down: 18 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 2.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 5 x 100 @ moderate aerobic intensity, RECOVERY=0:05

6 x 100 at VO2 max intensity, REST = 0:30

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Cooking Time: 40 Minutes

Warm-up: Run for 10 minutes at low aerobic intensity

Workout: 20-minute run @ threshold intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bike: 1:30

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 10 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swimming + Sprint: 1.9 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 2 x 400 @ intensity threshold, REST = 0:45

6 x 50 @ fast intensity, REST = 0:20

8 x 25 kicks, REST = 0:15

Cool-down: 300 @ low aerobic intensity

Fundamentals Run: 55 Minutes

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 35-minute run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

Corsaning Strides: Workout: 4 x 20-second runs at a fast pace with 40-second recovery periods immediately after completing today’s running workout

Saturday

Bike Ride: 2:15

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 1 hour and 55 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Sunday

Basic Swimming: 1.8 km

Warm-up: 250 @ low aerobic intensity

Workout: 1,500 @ moderate aerobic intensity

Cool-down: 250 @ low aerobic intensity

Long Run: 1:05

Warm-up: Run for 10 minutes at moderate aerobic intensity

Workout: 45-minute run @ moderate aerobic intensity

Cool-down: 10-minute run at moderate aerobic intensity

 

Week 20

Monday

Rest

Tuesday

Bike Time: 1 Hour

Warm-up: 13 minutes at moderate aerobic intensity

Workout: 2 sets of 12 minutes at threshold intensity, with 10 minutes of recovery

Cool-down: 13 minutes at moderate aerobic intensity

Wednesday

Basic Swimming: 1.6 km

Warm-up: 300 @ low aerobic intensity

8 x 25 fast, REST = 0:10

Workout: 3 x 100 @ moderate aerobic intensity, RECOVERY=0:05

6 x 100 at VO2 max intensity, REST = 1:00

Cool-down: 300 @ low aerobic intensity

Cooking Time: 32 Minutes

Warm-up: Run for 10 minutes at low aerobic intensity

Workout: 12-minute run @ threshold intensity

Cool-down: 10-minute run at low aerobic intensity

Thursday

Fundamentals Bicycle: 45 minutes

Warm-up: 10 minutes at moderate aerobic intensity

Workout: 25 minutes at moderate aerobic intensity

Cool-down: 10 minutes at moderate aerobic intensity

Friday

Threshold Swimming + Sprint: 1 km

Warm-up: 300 @ low aerobic intensity

Workout: 2 x 200 @ intensity threshold, REST = 0:45

4 x 25 @ fast intensity, REST = 0:20

Cool-down: 300 @ low aerobic intensity

Saturday

Bike Recovery: 20 Minutes

Warm-up: 10 minutes at recovery intensity

Cool-down: 10 minutes at recovery intensity

Sunday

Race Day!

Warm-up: Swimming 19 km

Work: 90 km bike ride

Cool-down: 210 km run

 


 

Work out in an OXYBURN outfit

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EVO SPEED Socks – Designed specifically for running, with NanoGlide® fluorine inserts that reduce friction, prevent blisters, and regulate foot temperature, preventing the feet from overheating.

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