Description
Formthotics Sport Run Dual – Dual-Density Running Insole for Structured Support
The Formthotics Sport Run Dual pairs a softer cushioning top layer with a firmer support base to give runners more structure, motion control and shock absorption than a single-density insole. It's designed for runners who want the arch support and alignment of a Formthotics insole combined with meaningful impact protection — particularly useful for longer distances, heavier runners, or anyone managing foot or lower limb discomfort during training.
Made from dual-density Formax™ foam and manufactured in New Zealand, the Run Dual can be heat-moulded by a podiatrist for a fully custom fit or worn straight from the pack. Ultra-Fresh antimicrobial treatment helps manage odour across high-mileage training weeks.
Run Single vs Run Dual vs ShockStop — Which One?
Choosing between Formthotics running insoles comes down to how much structure and cushioning you need. The Run Single is the thinnest and lightest — best for tight race shoes and runners who want ground feel over cushioning. The Run Dual (this product) adds a second foam layer for runners wanting more support and control without going full shock-absorption. The ShockStop adds a dedicated impact-absorbing layer at the heel and forefoot — the heaviest option, built specifically for high-impact training on hard surfaces.
Key Features
- Dual-density Formax™ foam — cushioning top layer over a firmer support base for stability and control
- Thermoformable — heat-mouldable in-clinic for a personalised contour
- Deep heel cup — stabilises the heel and absorbs impact through the gait cycle
- Full arch support — longitudinal, lateral and transverse arch support via the teardrop design
- Ultra-Fresh antimicrobial treatment — controls odour-causing bacteria
- Closed-cell foam — won't absorb moisture, stays light during wet conditions
Who the Run Dual Is For
- Distance runners wanting more cushioning and structure than a single-density insole
- Heavier runners who compress single-density foam too quickly
- Runners managing plantar fasciitis, arch pain or Achilles tightness during training
- Anyone stepping up from a basic stock insole to a structured, supportive replacement
Sizing
Available in XXS–XL. Trim guides are marked on the insole for a precise fit in most running shoes. Manufactured in New Zealand.
Frequently Asked Questions
Will the Run Dual help with my plantar fasciitis?
Many runners find the dual-density arch support helps reduce heel and arch discomfort during training. For maximum heel-strike absorption, the ShockStop adds an extra impact layer. Persistent heel pain should be assessed by a podiatrist alongside using supportive insoles.
Is the Run Dual too thick for racing shoes?
It depends on the shoe. The Run Dual is thicker than the Run Single, so it works best in standard-volume trainers rather than race flats. If you need support in a low-volume shoe, the Run Single is the better choice.
Do I need to heat-mould these?
No — they work out of the pack and will gradually conform to your foot with wear. Heat moulding by a podiatrist gives a closer, more immediate custom fit but is optional.
How is this different from a Trekker orthotic?
Formthotics are softer, thermoformable foam insoles — they support the foot with cushioning and contouring. Trekker orthotics are firmer, semi-rigid devices designed for stronger biomechanical control. A podiatrist can help determine which level of support suits your foot type.
Can I use these in work boots or casual shoes?
You can, but the Everyday Workfit is specifically designed for work boots and safety shoes. The Run Dual is optimised for running shoe fit and performance.