Marathon Confidence Builder
Workout - Marathon Confidence Builder
- 5.5km @ 4'30''/km
- 7 lots of:
- 3.0km @ 3'25''/km
- 1min 30s rest
- 6.5km @ 5'10''/km
Intro: Ben Is Running has a solid breakdown of HUGE Marathon Workout 3 WEEKS Out From BOSTON | Hoka Rocket X2 Review. The main takeaways are below so you can run this session today. Watch the full video for the details.
Key points
- A 34 km run, 23 days before Boston, built around 7 x 3 km repeats at marathon pace (~3:25/km). The structure builds race-specific endurance, see Mastering Interval Training: Science-Backed Workouts and How a Smart App Can Personalize Them.
- Each 3 km repeat is followed by a 1:30 easy jog (roughly 125 bpm). You practice staying composed as fatigue accumulates.
- Warm-up: 5.5 km easy-moderate (~4:32/km). Cool-down: 6.5 km easy (~5:08/km).
- Tip: Run each recovery jog at the same easy pace. It builds pacing awareness when fatigued and keeps the workout on track.
Workout example
1. Warm-up 5.5 km at easy-moderate pace
2. 7 x:
- 3 km at marathon pace (~3:25/km)
- 1 min 30 sec easy jog recovery
3. Cool-down 6.5 km at easy pace
Total ~34 km
Adjust the 3 km pace to your target (for example, 3:45/km for a 4:15 marathon). Hold the 1:30 recovery steady.
Closing note: Set up these repeats in the Pacing app for your schedule. It’s a good way to build confidence at marathon pace three weeks out. This repeat-based method transfers to other distances. See Mastering 5K Speed: Proven Interval Strategies to Cut Minutes off Your Time for 5K work or Mastering the 10K: Proven Training Plans, Pace Strategies, and How a Smart App Can Elevate Your Performance for 10K.