Ethan BrooksBy Ethan Brooks

Updated November 2026

SiS energy gels in orange are a fruit-flavored carbohydrate gel designed to be taken during long runs and races. The orange flavor sits within SiS’s standard gel line, so you can use it the same way you would any other SiS gel: one gel at a time, with water, at planned intervals. Whether it suits you depends on your taste preferences, your stomach, and whether you need caffeine.

Why the Orange Flavor Matters on the Course

Flavor is a bigger factor than most runners expect. Gels are sticky, sweet, and often thick, and by mile 15 of a marathon many runners find sweet flavors unappealing. Citrus flavors like orange tend to cut through that sweetness more than vanilla or chocolate do, which is why many runners reach for them when their palate starts to fatigue. Flavor is personal, though, so test any gel in training before race day.

Shopping for one? See our guide: SiS GO Energy Gels Review: Features and Performance.

What to Check Before You Commit

Before buying a flavor in bulk, check three things on the label. First, confirm whether the specific orange gel you are buying contains caffeine, since SiS sells caffeinated and non-caffeinated versions. Second, look at the carbohydrate content per gel and compare it with your planned intake. Third, check the ingredient list for any additives you react to. Manufacturers specify these details per product, and they can change between formulations, so the packaging in front of you is the authority.

Many runners aim for roughly 30 to 60 grams of carbohydrate per hour during efforts longer than about 90 minutes, and some well-trained athletes push higher. Work out how many grams each gel provides, then decide how many you need per hour. Consult a sports dietitian or your doctor if you have a medical condition, a history of GI problems, or are managing blood sugar.

Practical Steps for Using Orange Gels

  1. Test the orange gel on at least two long training runs of 90 minutes or more before using it in a race.
  2. Take the first gel 30 to 45 minutes into the effort, then repeat at regular intervals that match your plan, often every 30 to 45 minutes.
  3. Wash each gel down with 4 to 6 ounces of water, unless the label directs otherwise.
  4. Carry at least one more gel than you think you need, in case of a dropped packet or a race that runs long.
  5. If the orange flavor starts to taste off or your stomach objects, switch to another flavor rather than forcing it down.

For a full timing framework, see When to Take SiS Energy Gels: A Timing Guide for Runners (2026). If you are planning a longer run or a race, When to Take Energy Gels During Half Marathon: A Step-by-Step Timing Guide walks through pacing your intake over 13.1 miles.

Caffeinated Versus Non-Caffeinated Orange Gels

If you are considering a caffeinated option, understand how it fits your plan before race day. Caffeine effects vary widely between people, and a dose that helps one runner can cause jitters or stomach upset in another. For a direct comparison of caffeine content and trade-offs, read SiS GO Energy + Caffeine Gel Review: Sis Energy Gels Caffeine Pros and Cons. Whichever version you choose, keep the caffeine strategy identical in training and on race day.

What we’d use

A simple gel belt keeps your orange gels within reach so you are not fumbling in a pocket at mile 18. Look for a Fitletic or similar running gel belt with elastic loops sized for standard gel packets.

A soft flask lets you wash gels down without stopping. Search for a collapsible running water bottle with a bite valve, which is easy to carry on a race course.

FAQ

Are SiS orange gels caffeinated?

It depends on the specific product. SiS sells both caffeinated and non-caffeinated gels, so check the label of the exact orange variant you are buying.

How many orange gels should I take during a marathon?

Many runners plan for several gels across the race, spaced every 30 to 45 minutes. Your total depends on your carbohydrate target and how many grams each gel provides, so calculate from the label.

Can I take an orange gel before a run?

Some runners use a gel shortly before starting, but test this in training first. Taking it too close to the start can cause stomach discomfort for some people.

Ready to choose one?

Ethan Brooks

About Ethan Brooks

Ethan Brooks is part of our editorial team and reviews and edits our marathon & half-marathon guides, checking product details against manufacturer specifications and owner feedback.