Achilles Tendinopathy in Runners: A 12-Week Loading Program
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The Knee Pain Mastery Guide
The Knee Pain Mastery Guide by Evolve Physio & Mastery is a structured knee rehabilitation program designed for athletes dealing with ACL, MCL, and meniscus injuries.
Morning stiffness is the tell
Achilles tendinopathy in runners usually announces itself as morning stiffness at the heel or mid-Achilles that improves after 10–15 minutes of walking, then returns after running — especially hills, speed work, or the day after a long run. It's not inflammation you can ice away. It's a load-capacity mismatch: the tendon is being asked to do more than it can currently handle.
Pain rules (same as all tendon rehab)
- During exercise: ≤3/10 pain OK
- Next morning: no worse than baseline
- If 24-hour pain spike → reduce load 20–30%, hold one week
The 12-week program
Weeks 1–4: Isometrics + heavy slow
- Isometric calf hold (mid-range, single-leg): 5 × 45 sec, 2× daily
- Heavy slow calf raise (straight knee): 3 × 6–8, every second day, add weight weekly
- Bent-knee soleus raises: 3 × 10–12
- Reduce running volume 30–50%; avoid hills and speed
Weeks 5–8: Energy storage
- Continue heavy slow 2×/week
- Pogo hops and skip progressions: 3 × 20, pain-monitored
- Gradual reintroduction of flat easy running
- Single-leg hop symmetry testing
Weeks 9–12: Return to full training
- Hills and tempo reintroduced one element at a time
- Volume increases ≤10% per week
- Maintain calf strength 2×/week indefinitely — drop-off invites recurrence
Insertional vs mid-portion
Mid-portion (2–6 cm above heel): responds well to heavy slow eccentrics and Alfredson-style loading. Insertional (at the heel bone): needs more cautious loading — often start with isometrics and flat-ground raises, avoid aggressive stretch off a step early. If unsure, get assessed — the programs differ.
Connects to the running & calf cluster
Calf strain overlap: calf strain guide. Plantar heel pain differential: plantar fasciitis. Return to run: 8-week return framework. Full durability work: Running Masterclass.
Book an Achilles assessment
Achilles tendinopathy left unmanaged becomes a season-killer. Book a physio assessment at Evolve Physio & Mastery, Cabramatta. Runners from Liverpool, Fairfield, Bankstown and Southwest Sydney.
References: Alfredson et al. 1998 heavy-load eccentric calf training; Murphy et al. 2019 achilles tendinopathy loading review (Br J Sports Med); Cook & Purdam 2009 tendinopathy continuum model.
Frequently Asked Questions
What's the difference between tendinitis and tendinopathy?
Tendinitis implies acute inflammation. Most chronic Achilles problems are tendinopathy — a failed healing response with structural tendon changes. That's why rest and anti-inflammatories alone rarely fix it, and progressive loading is the cornerstone.
Should I stop running with Achilles pain?
Often you can continue at reduced volume if pain stays ≤3/10 during runs and settles within 24 hours. Complete rest for weeks deconditions the tendon. Cross-train on bike or pool if running pain exceeds thresholds.
How long until I can run hills again?
Usually weeks 8–10 of a compliant loading program, once heavy slow calf raises are pain-free and hopping is symmetrical. Hills and speed are the final progression — not the starting point.
Do heel drops on a step actually work?
Yes — the Alfredson eccentric protocol and its modern heavy-slow evolution have strong evidence for mid-portion Achilles tendinopathy. The key is load intensity and consistency, not just 'doing heel drops' without progression.
When is imaging needed?
If there's a palpable gap, sudden pop (rupture — see our <a href="/blog/achillestendonrupture">Achilles rupture guide</a>), or no improvement after 12 weeks of loading. Ultrasound can confirm tendinopathy but rarely changes initial management.
