Save 10% Storewide at Original Mountain Marathon
At OMM, save 10% on Running Tights, Running Shorts, and more.
Expires Nov 19, 2026.

theomm.com
8 offers to explore · Updated
SAVE ON YOUR NEXT ORDER
Common OMM codes from the offers we've collected, shared for reference only. A code isn't guaranteed to work, so check the offer's terms at checkout.
Shop at theomm.com →At OMM, save 10% on Running Tights, Running Shorts, and more.
Expires Nov 19, 2026.
At OMM, save 20% on Running Jackets, Hydration Packs, and more. To qualify, your OMM cart must meet the minimum price requirement of $100.
Shop OMM today and save 20% off, plus check out even more offers.
Save 20% at OMM today.
Save 35% on your next order at OMM.
At OMM, save 22% on Compasses and Emergency Shelters.
Get your Running Jackets delivered for free.
Save 10% on all selections at OMM.
No offers match this filter.
Past promotions for reference. These offers may no longer be redeemable.
OMM26XMC55OMMXOMM30MILHUNGRY10BOGO50Checkout screenshots supplied by the collected source. Historical results do not guarantee current availability.
| Code | Discount | Offer | Expires |
|---|---|---|---|
| XOMMEMAIL10 | 10% OFF | Save 10% Storewide at Original Mountain Marathon | Nov 19, 2026 |
| HappyHolidays25 | 20% OFF | Save 20% on All Omm Clothing and Equipment at Original Mountain Marathon | See merchant |
| BAG20 | 20% OFF | 20% Discounts for Any Order Sitewide at Original Mountain Marathon | See merchant |
| FUTURE80 | 20% OFF | Save 20% in Original Mountain Marathon for Any Purchase | See merchant |
| Deal | 35% OFF | Special Offer: 35% off WaistBelts | See merchant |
OMM is a two-day orienteering event staged each year in the United Kingdom, organised by Original Mountain Marathon and first held in 1968. For many years it ran as the Karrimor International Mountain Marathon before taking the OMM name. Teams cover a mountain course across the two days, picking their own routes and carrying their own kit, so self-sufficiency and sound decisions in rough weather matter as much as fitness. The same name sits behind the clothing and equipment line that grew around the event: lightweight technical clothing, footwear, rucksacks, accessories and sportswear for mountain runners, ultra-trail runners and other outdoor adventurers.
Kit is built to be durable and repairable rather than thrown away. Through its RE:OMM project the brand recycles, repairs and reconditions used gear, uses recycled insulation, and sends orders out in low-ink and compostable packaging. InfiniOMM is its move toward gear that can be recycled once it wears out.
Standard shipping is free on orders over £50, and anything below that amount carries a £6 charge, with most parcels going by Royal Mail 48hr Tracked. Unwanted items can be returned by post within 14 days as long as they are unused, undamaged and in their original condition and packaging, and refunds go back to the original payment method. Membership of the Oh My Rewards loyalty scheme lets shoppers collect points as they buy.
News and updates appear on Facebook, Twitter, YouTube and Instagram.
Confirm current details directly with the merchant.
Codes go into the discount code box at the OMM checkout; deals need no code.

Pick a code from the list above. Its details give the discount and any conditions, such as a minimum spend or an end date.
Select Show Code. A window opens with the full code, a Copy code button and a link to theomm.com.
Add your items at theomm.com, then paste the code into the discount code box in your cart or at checkout.
Make sure the discount shows in the order total before you pay. If it does not, the order may not meet one of the code's conditions.
Original Mountain Marathon runs RE:OMM, a project that recycles, repairs and reconditions gear, and it sits alongside recycled insulation plus low-ink and compostable packaging. Mountain kit is built to last and can be repaired, so this page is worth checking for a current OMM offer.
Yes. OMM runs a teacher discount program, and certified instructors receive exclusive codes, typically 10% off, that they can pass on to students. Instructors have to sign up or get certified to access these benefits and starter kits.
Yes. Birthday perks come through OMM's Oh My Rewards loyalty program, where members earn bonus points that can be redeemed for discounts such as $10, $15 or $20 off purchases.
Yes. OMM gives a first responder discount to police, fire and EMT workers, and verification through ID.me is required.
Yes. Eligible new customers who spend over $40 get 20% off their first order at OMM.
OMM's Official School Ambassador program offers reduced membership rates, which works as a student perk rather than a standard discount code. StudentOMT members also get 15% off a dedicated OMM question bank.
Yes. OMM ships standard delivery free on orders over £50, while orders under that amount carry a £6 charge, and most items go out via Royal Mail 48hr Tracked.
A code fails when the order misses one of its conditions, such as eligible products or a minimum spend, or when the promotion has ended. Each offer's details list its conditions.
HappyHolidays25 gives the biggest discount on this page, 20% off. The biggest deal, 35% off, needs no code.
3 of the 8 offers are sitewide, including XOMMEMAIL10. The others cover selected products or orders, as their details say.
No offer on this page mentions a minimum spend.
14 days.
The product is in its original condition and packagingunused and undamaged.
Return by post.
Original payment method.
Over the past year, 17 OMM codes were collected, about 1 a month. The busiest month was Jun 2026, with 3 codes. The most popular discount was 20% off, offered in Dec 2025.
Browse more stores in OMM’s categories.