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Build a Half Marathon Training Base (16 Weeks)

16 weeks · 0 milestones

Complete a structured 16-week half marathon training program with full session log submitted as proof.

Milestone map

Milestone map

3 milestones

Establish consistent weekly running base

4 weeks

Build a habit of 3+ runs per week over four consecutive weeks, reaching at least 20km total weekly mileage by week 4. Aerobic capacity requires sustained low-intensity volume — this phase cannot be compressed without injury risk. All runs should feel easy enough to hold a conversation.

Proof required

Submit four weeks of GPS-tracked running logs showing 3+ runs per week, with weekly totals reaching at least 20km by week 4. Note your average easy pace and any rest days taken.

What gets checked

  • Logs show GPS-tracked data with distance, pace, and route — not self-reported distances
  • Sessions vary in length (not identical runs every day), indicating genuine progressive training
  • Week 4 weekly total reaches or exceeds 20km across at least 3 individual sessions

Common mistakes

  • Building mileage too fast — jumping from zero to daily medium-distance runs without rest days creates overuse injuries before the base is established
  • Only doing hard runs — identical effort on every session without easy aerobic volume misses the base-building benefit entirely

Resources

Foundationstart here

Depthgo deeper

What a verifier looks for

  • Check the GPS logs show actual mapped routes — not manually entered distances without tracking data.
  • Ask what the submitter's longest single run was during the four weeks and how their body responded — confirms genuine engagement with the training.
  • Confirm rest days are included — a log without any rest days suggests unfamiliarity with training principles.

Complete first 14km+ long run

6–8 weeks of progressive training from M1 base

Extend your long run progressively to 14–16km over 6–8 weeks, adding no more than 10% to weekly mileage each week. The long run should feel controlled — a pace you could sustain while holding a fragmented conversation. This is the core of half marathon preparation; no other single session matters more.

Proof required

Submit a GPS-tracked record of a 14km+ continuous run completed at a conversational pace, plus your training log from the preceding 6 weeks showing weekly mileage totals and the progressive long-run distance.

What gets checked

  • GPS record shows 14km+ in a single continuous session without unexplained pauses exceeding 10 minutes
  • Training log shows week-by-week mileage increases of no more than 10% — not a sudden jump to the long run
  • Pace and heart rate (if recorded) are consistent with an easy aerobic effort, not a race pace

Common mistakes

  • Jumping to the long run without the preceding weekly mileage — the body needs accumulated aerobic load across multiple sessions, not one big effort
  • Running the long run at race pace — this causes excessive fatigue and interferes with the weekly training volume that supports it

Resources

Foundationstart here

Depthgo deeper

What a verifier looks for

  • Ask the submitter to describe how the 14km run felt in the final kilometre — someone who ran at a genuinely easy pace can recall the experience clearly.
  • Check that the 6-week training log shows a progressive build — week 1 and week 6 weekly totals should be meaningfully different.
  • Ask whether they had any injury or discomfort during the 6-week buildup — genuine training accounts include these.

Complete 21km run

12–16 weeks total from M1 base-building start

Run the full half marathon distance. This can be a registered race or a solo training run — the LONGEVITY focus is on completing the distance under your own power, not a competitive time. A chip-timed race result is stronger evidence but a GPS-tracked solo run is fully valid.

Proof required

Submit a GPS-tracked record of a 21.1km+ continuous run showing total distance, time, and average pace. If completed at a registered race, include your finish result or bib. Include a link to your Strava or equivalent activity if available.

What gets checked

  • GPS record shows 21.1km+ in a single continuous session — treadmill-only runs require a photo of the treadmill display alongside the app log
  • Total distance, pace, and elapsed time are consistent with genuine completion (not a GPS error or an indoor recording without external verification)
  • M1 and M2 logs are submitted together — the full preparation arc makes the M3 completion credible

Common mistakes

  • Attempting 21km without completing M2 — jumping to race distance without a verified long-run base dramatically increases injury and DNF risk
  • Starting too fast in a race and bonking in the second half — pace discipline in the first 10km determines whether the full distance is achievable

Resources

Foundationstart here

What a verifier looks for

  • Check the GPS activity file or map — the route should show a coherent 21km path, not a glitched circle.
  • Ask how the submitter felt at km 16–18 — the second half of a half marathon has a consistent physiological character that genuine runners can describe.
  • If submitted without race proof, ask when they ran it and what the conditions were like — adds credibility to a solo run without an external result document.

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