“How long until I can run again?” is the question every injured runner asks first — and the honest, evidence-based answer is rarely a single number. Modern rehabilitation science has moved away from rigid “rest six weeks and see” timelines toward criteria-based progression: moving through recovery phases when you hit specific goals and milestones, not when a date on the calendar arrives.

That’s the thinking behind our free Recovery Planner tool, which maps out typical phase-by-phase timelines for over 50 common running injuries. Below is a look at the evidence behind four of the most common ones, and how to use the tool to plan your own return.

Why “it depends” is actually the right answer

Time-based rehab persists because it’s simple to communicate, but the research consistently favours criteria-based return-to-sport decisions. In ACL rehabilitation — probably the most heavily studied return-to-sport pathway in sports medicine — criteria-based progression is now considered essential, and a minimum of nine months before return to sport is strongly supported by re-injury data, regardless of how “good” someone feels earlier than that. The same logic, at a smaller scale, applies to far more common injuries like the four below: the timeframes are typical ranges, not guarantees, and the phase you’re in should be judged by what you can do, not what week it is.

Plantar Fasciitis — typically 12 to 16 weeks

Plantar fasciitis is one of the most common causes of heel pain in runners, and the evidence — reflected in clinical practice guidelines such as the JOSPT Heel Pain–Plantar Fasciitis guideline — points to a fairly reliable four-phase pattern. Most cases resolve within about a year, though most runners are back to normal training well before that if they follow a structured plan:

• Acute (weeks 0–2): footwear changes, night splinting, and plantar fascia and calf stretching to bring first-step pain under control.
• Load Management (weeks 2–6): heavy slow resistance calf strengthening and intrinsic foot exercises — the load capacity phase most guidelines emphasise.
• Progressive Loading (weeks 6–12): walk-to-run transition and windlass mechanism exercises.
• Return to Sport (weeks 12–16): full training load with no next-day flare.

Achilles Tendinopathy — the Alfredson protocol and beyond

Achilles tendinopathy rehab is built largely around one landmark piece of research: Alfredson’s 1998 eccentric loading protocol — three sets of 15 eccentric calf raises, twice daily, seven days a week, for 12 weeks. Heavy slow resistance training has since emerged as an effective, often better-tolerated alternative. The typical timeline runs about 16 weeks:

• Pain Modulation (weeks 0–2): isometric loading and identifying provocative activities.
• Isotonic Loading (weeks 2–8): eccentric or heavy slow resistance calf raises.
• Energy Storage (weeks 8–12): reintroducing running and calf power work.
• Return to Sport (weeks 12–16): full training and sprint preparation.

ITB Syndrome — the fastest-resolving of the four, if you fix the real cause

Iliotibial band syndrome tends to resolve faster than the other three — often within 8 weeks — but only if treatment targets the actual driver. Fredericson & Wolf’s 2005 review is one of the most cited pieces of evidence here, and its central finding still holds: hip abductor weakness, not a “tight” ITB, is usually the primary cause, which is why foam rolling alone rarely fixes it.

• Load Reduction (weeks 0–2): cutting running volume and identifying provocative loads like downhill running and cambered surfaces.
• Hip Strengthening (weeks 2–5): hip abductor and external rotator strengthening plus gait retraining.
• Return to Run (weeks 5–7): graduated running using the 10% rule, avoiding hills initially.
• Return to Sport (weeks 7–8): full training volume with hills and varied terrain reintroduced.

Patellofemoral Pain — load management and strength, not rest

Patellofemoral pain syndrome (runner’s knee) responds best to active management rather than rest — a conclusion echoed across the International Patellofemoral Pain Research Retreat consensus statements. Strengthening the hip and quadriceps, alongside sensible load management, are consistently identified as the mainstays of treatment, over a typical 12-week timeline:

• Load Reduction (weeks 0–2): reducing provocative loads and short-term taping or bracing.
• Strengthening (weeks 2–6): VMO activation and hip abductor/external rotator strengthening.
• Progressive Loading (weeks 6–10): reintroducing running, plyometrics, and stairs.
• Return to Sport (weeks 10–12): full training volume with no post-exercise swelling.

How to use the Recovery Planner

The tool is free to use and needs no login:

1. Open the Recovery Planner and select your injury from the dropdown of over 50 common running injuries.
2. See the phase-by-phase timeline for that injury — a visual breakdown of each stage, with the goals and milestones that mark readiness to progress, not just a week count.
3. Print or save a PDF copy to track against as you go.
4. While you’re there, try the free Marathon Ready Assessment — a 7-test mobility and strength screen that gives an instant traffic-light verdict before race day.

The four injuries above are fully open to explore — timelines, goals, milestones and all. Try the free Recovery Planner now →

Want to sign up and follow your own progress week to week, rather than just read the plan? Become a Physiorun Pro member to log your own strength and mobility scores against these milestones in the Capacity Tracker, and unlock full recovery timelines for every remaining injury in the planner too.

Sources

• Alfredson H, et al. (1998) — heavy-load eccentric calf muscle training for chronic Achilles tendinopathy, Am J Sports Med
• Fredericson M, Wolf C (2005) — iliotibial band syndrome in runners: innovations in treatment, Clin J Sport Med
• Martin RL, et al. (2014) — Heel Pain–Plantar Fasciitis: Clinical Practice Guidelines, Journal of Orthopaedic & Sports Physical Therapy
• Crossley KM, et al. (2016) — Patellofemoral pain consensus statement, British Journal of Sports Medicine

This article and the Recovery Planner tool are for general guidance, not a diagnosis or a substitute for professional advice. Real recovery should always be criteria-based rather than purely time-based, and is best guided by a clinician who has assessed you individually. If pain persists or worsens, get it properly assessed.