Running · Half marathon

HALF MARATHON TRAINING PLAN — 12 WEEKS TO A PB.

21.1 km — the distance where method gives you the biggest lever. Polarised 80/20, block periodisation, threshold training. Your plan knows your numbers and steers you towards your race pace over 12 weeks.

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Summitflow Pace for Running · Half marathon

Polarised 80/20

80 % in Z1/Z2, 20 % in Z4/Z5. The half marathon responds especially well to a clean intensity distribution.

Threshold training

Cruise intervals and tempo runs at threshold pace — the heart of your 20 % intensity share.

VO2max intervals

3–5 min intervals in peak weeks. They raise your speed ceiling above race pace, so race pace feels easier afterwards.

3 block phases

Base (4 wks) → Build (4 wks) → Peak (3 wks) + Taper (1 wk). Every block has its own training goal.

Race-pace specifics

Specific race-pace runs in the peak phase. You run your race pace before you run it on race day.

Mini taper

7–10 day taper for the half marathon. Short but precise — volume down, sharpness up.

Grounded in sports science

Polarised 80/20

80% of your training in low zones (Z1/Z2), 20% in high zones (Z4/Z5+). The most effective approach to endurance performance — backed by Seiler (2010) and Stöggl & Sperlich (2014).

Block periodisation

4-week blocks: Build → Build → Peak → Recovery. A systematic increase in load all the way to race day, through the Base, Build, Peak and Taper phases.

Individual zones

Training zones calculated with Coggan Classic (Z1–Z7) from your FTP, HRmax and threshold pace. No guesswork — precise targets for every session.

Simple pricing

No hidden costs. Cancel any time.

Monthly
CHF 19 / month
Maximum flexibility, cancel any time
  • Training plan always up to date — adapted automatically
  • Triathlon, Hyrox, running, cycling, duathlon & OCR
  • Feedback loop & weekly adjustments
  • Precise training zones (power, HR, pace)
  • Move & adjust sessions

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Frequently asked questions