Maurten
Gel 100
9.0Excellent
Hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neutral texture — designed for precise race and long-run carb stacking when you want a compact gel without caffeine.
From € 3,20
Comparison
Maurten Gel 100 vs Science in Sport GO Isotonic Gel
Both are caffeine-free pocket gels for long runs and marathon fueling. Maurten Gel 100 is the hydrogel-style default many runners shortlist; SIS GO Isotonic is the more approachable isotonic texture when you want easier fluid pairing.
- Expert comparison
- Data driven
- Updated 1 September 2026
- Nutrition & Fuel
Science in Sport
GO Isotonic Gel
8.2Good
Thinner isotonic gel with 22g carbs (~87 kcal) per 60ml sachet — designed for runners who want an easy-take gel that typically needs little or no extra fluid at the moment of use.
From € 2,50
Decision guide
When each shoe is the better buy — by training mix and conditions, not overall score alone.
Bottom line
No universal winner. Choose Maurten Gel 100 when you already tolerate that texture and want the Maurten race-fuel lane; choose SIS GO when isotonic mouthfeel and simpler starter-gel pricing matter more.
Context-dependent — pick by texture preference and training practice, not a single score.
Maurten
Choose Gel 100 if…
- You want Maurten’s gel format and already tolerate it in training.
Science in Sport
Choose GO Isotonic Gel if…
- You prefer an isotonic-style gel that is easy to start with.
Key Differences
Texture
Gel 100: Maurten hydrogel-style gelGO Isotonic Gel: SIS GO isotonic gel mouthfeelSame job (pocket carbs); different texture and brand systems — train with the one you will race.
When each wins
Context winners by session type — use these with the decision guide above, not as a universal ranking.
Marathon
Gel 100
Common marathon pocket-gel shortlist when Maurten texture works in training.
—
High-Carb Fueling
—
Non-Caffeinated Fuel
GO Isotonic Gel
Caffeine-free isotonic gel option — confirm label.
—
Short Training
—
Easy-to-Carry Fuel
Gel 100
Compact single-serve gel for belt carry.
Value
GO Isotonic Gel
Clearer Kitletics value score for the current catalog price / performance mix.
Specs
| Spec | Gel 100 | GO Isotonic Gel | Winner |
|---|---|---|---|
| Type | Gel | Gel | TIE |
| Carbohydrate (g) | 25 | 22 | — |
| Texture / Form | Gel | Gel | TIE |
| Serving Size | 40g sachet | 60ml sachet | — |
| Contains Caffeine | No | No | TIE |
| Caffeine Amount (mg) | — | — | TIE |
| Sodium (mg) | 22 | — | — |
| Calories (kcal) | 100 | 87 | — |
| Fluid Required | Optional — often taken without extra water | Low — marketed as isotonic / often without extra water | — |
| Sugars (g) | 25 | 0.6 | — |
| Allergen Information | — | — | TIE |
| Protein (g) | 0 | 0 | TIE |
| Flavour | Neutral / unflavoured | Multiple fruit flavours | — |
| Dietary Labels | — | Vegan | — |
| Pack Size | Box of 12 | Box of 30 | — |
Current Prices
Regional prices · Netherlands
Prices last checked: 12 Sept 2026. Offer updates do not mean the editorial comparison was re-reviewed.
Top Alternatives
Precision Fuel & Hydration PF 30 Gelbetter value is the fork: PF 30 Gel (Mild, low-stick gel delivering 30g carbs per serving — designed for structured high-carb…) versus Gel 100 (Hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neutral textur…). Source verdict cue: Buy the Gel 100 when hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neu… Spec split — peer type gel vs source type gel.
GU Energy Energy Gelbetter value is the fork: Energy Gel (Classic ~22g-carb energy gel with wide flavour choice — designed as an accessible trainin…) versus Gel 100 (Hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neutral textur…). Source verdict cue: Buy the Gel 100 when hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neu… Spec split — peer type gel vs source type gel.
Neversecond C30 GelLeave Gel 100 for C30 Gel when a same-role peer outweighs the source’s long runs / half bias. C30 Gel centres on marathon / high carb fueling. You give up Gel 100 spec (type gel).
Maurten Gel 100 Caf 100a same-role peer is the fork: Gel 100 Caf 100 (Same 25g-carb hydrogel format as Gel 100 with ~100mg caffeine per sachet — designed for l…) versus Gel 100 (Hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neutral textur…). Source verdict cue: Buy the Gel 100 when hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neu… Spec split — peer type gel vs source type gel.
Maurten Gel 160a same-role peer is the fork: Gel 160 (Higher-carb Maurten hydrogel delivering 40g carbs (~160 kcal) per sachet — designed for h…) versus Gel 100 (Hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neutral textur…). Source verdict cue: Buy the Gel 100 when hydrogel sachet delivering 25g carbs (~100 kcal) per label in a firm, near-neu… Spec split — peer type gel vs source type gel.
Honey Stinger Organic Energy GelPick Organic Energy Gel over GO Isotonic Gel only if honey-forward taste many runners find easier than maltodextrin syrup is the weekly gap. Organic Energy Gel is short training / long runs; GO Isotonic Gel stays short training / half. Cost of the switch: carb density below modern 30–40g race gels.
Science in Sport Beta Fuel GelShared use-case alternative
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