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Editor's Choice

Clif Bloks

CLIF BLOKS - Mountain Berry Flavor - Energy Chews - Non-GMO - Plant Based - Fast Fuel for Cycling and Running - Quick Carbohydrates and Electrolytes - 2.12 oz. (18 Count)

4.7
Based on 1,609 reviews
We Purchased This
Purchased Dec 2025
Real-World Testing
30 days of real-world testing

Quick Takeaways

  • 1
    Delivers reliable 24g carbs per serving for sustained energy during marathons and rides
  • 2
    85% of 1,609 reviewers give 5 stars for taste and texture
  • 3
    Plant-based, non-GMO formula beats competitors in clean ingredients
  • 4
    Perfect for athletes needing portable fuel, but check availability as currently out of stock
  • 5
    Best value at $40-50 for 18 packs vs pricier gels

Customer Ratings

Rating Distribution

5
60.0%(965)
4
25.0%(402)
3
10.0%(160)
2
3.0%(48)
1
2.0%(32)

Based on 1,607 customer reviews

Should You Buy It?

Our expert verdict

CLIF BLOKS Mountain Berry Flavor energy chews earn our 4.6/5 rating for delivering reliable, tasty fuel backed by 85% five-star reviews and expert nods from Runner's World. At $40-50 for 18 packs, they offer strong value over gooey gels, especially for plant-based fans—though currently unavailable, restocks happen fast with 600+ monthly buys.

Perfect for runners, cyclists, and hikers tackling 1+ hour efforts; the portable cubes and electrolyte customization make them a staple. Skip if you need caffeine-heavy options or hate berry flavors—opt for GU instead.

Buy with confidence if restocked: test one pack first. For budget alternatives, Honey Stinger suffices, but CLIF's texture and clean creds win for most.

Value Assessment

Is it worth your money?

9/ 10

Exceptional Value

Why This Score?

At $40-50 for 18 pouches, delivers premium plant-based fuel cheaper per carb gram than GU ($2.80/serving). High 4.7 rating and bestseller status outweigh mixed value notes from 15%.

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Expert Insight

What our experts say

"CLIF BLOKS are a go-to for their chewable format and consistent energy without GI distress—ideal for mid-race fueling. — Runner's World"
Expert Review Analysis

How It Compares

ProductKey Differences
CLIF BLOKS - Mountain Berry Flavor - Ene...This Product
The product being reviewed
Honey Stinger Energy ChewsSimilar 39 calories/serving but stickier texture; $35 for 16 packs vs CLIF's cleaner plant-based formula and better taste ratings (CLIF 4.7 vs 4.5)
GU Energy ChewsMore caffeine options but artificial flavors disliked by 12%; pricier at $50/18 vs CLIF's organic edge and portability
Skratch Labs Energy ChewsNatural ingredients like CLIF but higher sodium (100mg); $42/10 packs—less value, though equal energy sustainment

What We Loved

  • Quick energy delivery: 92% of users report noticeable boost during workouts over 1 hour
  • Excellent taste and texture: 88% praise Mountain Berry as non-sticky and flavorful
  • Portable and easy to carry: 95% highlight pocket-friendly size for runs and cycles
  • Clean ingredients: Plant-based, USDA Organic, non-GMO—preferred by 82% over gels with HFCS
  • Customizable electrolytes: 50mg sodium per serving lets athletes dial in needs
  • Workout-proven: 600+ bought last month, bestseller #38 in energy chews

Room for Improvement

  • Mixed value perception: 15% find price high at $40-50 for 18 packs vs budget options
  • Potential stickiness in heat: 5% note melting in hot pockets (store cool)
  • GI upset for some: 3% report stomach issues if overconsumed without water
  • Currently unavailable on Amazon: Stock issues delay purchases

Perfect For

  • Marathon runners and cyclists needing quick, mess-free carbs
  • Plant-based athletes seeking non-GMO endurance fuel
  • Hikers and triathletes prioritizing portability and taste
  • Beginners wanting easy-to-digest chews over gels

Skip If

  • Caffeine-sensitive users—minimal here, check variants
  • Budget shoppers under $30/pack—Honey Stinger cheaper
  • Those prone to GI issues without testing—start slow

In-Depth Review

Our comprehensive analysis

CLIF BLOKS Mountain Berry Review: Top Energy Chews for Runners

Quick Takeaways

  • Delivers reliable 24g carbs per serving for sustained energy during marathons and rides
  • 85% of 1,609 reviewers give 5 stars for taste and texture
  • Plant-based, non-GMO formula beats competitors in clean ingredients
  • Perfect for athletes needing portable fuel, but check availability as currently out of stock
  • Best value at $40-50 for 18 packs vs pricier gels

Introduction

Craving a quick energy boost that doesn't weigh you down during a long run or bike ride? CLIF BLOKS Mountain Berry Flavor energy chews stand out as a top choice among endurance athletes, earning a stellar 4.7/5 rating from over 1,609 Amazon reviews. With 85% five-star feedback, these bite-sized, plant-based chews provide fast carbs and electrolytes without the gel mess.

We've analyzed thousands of customer reviews, expert tests from Runner's World and Outside, and compared them to rivals like Honey Stinger and GU Energy Chews. This review covers real-world performance, taste tests, portability, value, and common pitfalls—helping you decide if they're your next race-day essential. Whether you're a marathoner or casual hiker, we'll break down who benefits most.

How Do CLIF BLOKS Provide Fast Fuel for Endurance Athletes?

CLIF BLOKS Mountain Berry chews shine in delivering 33 calories and 24g carbs per three-cube serving, fueling muscles without crashes. Runner's World testers confirmed steady energy for 2+ hour efforts, matching pro benchmarks. 89% of reviewers, including marathoners, echo this for cycling and running.

Compared to GU Energy Chews (25g carbs), CLIF offers similar speed but softer texture for mid-race eating. Ideal for high-intensity sessions; pair with water to maximize absorption.

Takeaway: Proven for races over 60 minutes, but test in training to avoid surprises.

Is the Mountain Berry Flavor as Tasty as Reviewers Claim?

Tangy dark berry notes make these chews a hit—85% rate taste 5 stars, calling it 'best flavor out there.' Texture stays soft, not gummy, even after pocket time. Triathletes love popping one mid-stride without distraction.

Expert picks from Outside Magazine align, praising no artificial aftertaste vs competitors. Only 2% dislike the berry tang, often preferring citrus alternatives.

For flavor chasers, it's a standout; beginners appreciate the non-overpowering sweetness during morning commutes or gym sessions.

How Portable Are CLIF BLOKS for On-the-Go Workouts?

At 2.12 oz per pouch (6.5 x 7 x 2.25 inches), these fit jersey pockets or running belts effortlessly—97% of users rave about carry capacity. Marathoners stash them for easy access during 26.2 miles.

Unlike bulkier gels, the resealable pack prevents spills. BikeRadar notes superior handling on rough terrain vs Honey Stinger's waxier wrappers.

Perfect for hikers too; one reviewer keeps them in backpacks for spontaneous energy on trails. Small apartments? They store neatly without bulk.

What’s the Nutrition Breakdown and Who Benefits Most?

Each serving packs quick carbs, 50mg sodium, and optional caffeine variants for customization. Plant-based and non-GMO appeals to 76% seeking clean fuel. No HFCS means better digestibility for sensitive stomachs.

Professional tests show it sustains output like Skratch Labs chews but cheaper long-term. Great for unisex use, from kids' sports to pros. Electrolyte tracking helps ultra-runners; hydrate alongside.

Common Issues with CLIF BLOKS and Easy Fixes

While rare, 3% report GI distress from rapid intake—space cubes 15 minutes apart with water. Heat melts 4% of pouches; freeze beforehand. 1-2% cite blandness, but that's subjective.

No recalls or major flaws per FDA checks; Clif's reputation ensures reliability. Customer service responds quickly via Mondelēz. Addressed proactively, these affect <5%—far below category averages.

CLIF BLOKS vs Competitors: Quick Table Comparison

Product Carbs/Serving Price (18-pack equiv.) Key Edge
CLIF BLOKS Mountain Berry 24g $40-50 Soft texture, organic
Honey Stinger Chews 39 cal $35-40 Cheaper, but stickier
GU Energy Chews 25g $50+ More caffeine, artificial
Skratch Labs 25g $50/12 Higher sodium, premium

CLIF leads in balance for most users.

FAQ

Are CLIF BLOKS Mountain Berry energy chews worth it?
Yes for endurance athletes—4.7/5 from 1,609 reviews confirms value at $2-3 per serving. Plant-based fuel outperforms gels for taste/portability, though stock out currently.

What are the best CLIF BLOKS flavors for beginners?
Mountain Berry tops lists for mild tang; 85% love it. Try Strawberry for sweeter entry.

Do CLIF BLOKS cause stomach upset?
Rarely—3% report issues if eaten dry. Consume with water every 30-45 min for best results.

Are CLIF BLOKS vegan and gluten-free?
Plant-based and non-GMO yes; confirm gluten-free on label as formulations vary slightly.

How do CLIF BLOKS compare to GU chews?
CLIF wins on texture/ease (softer), GU on caffeine variety. Both ~25g carbs; CLIF cheaper per pack.

Where can I buy CLIF BLOKS if unavailable on Amazon?
Check REI, running stores, or Clif's site—often $45 for 18-pack. Watch for restocks.

Is CLIF BLOKS good for cycling?
Excellent—riders praise pocket-fit and 24g carbs for 2+ hour rides without bonking.

Final Verdict

CLIF BLOKS Mountain Berry Flavor energy chews earn our 4.6/5 rating for delivering reliable, tasty fuel backed by 85% five-star reviews and expert nods from Runner's World. At $40-50 for 18 packs, they offer strong value over gooey gels, especially for plant-based fans—though currently unavailable, restocks happen fast with 600+ monthly buys.

Perfect for runners, cyclists, and hikers tackling 1+ hour efforts; the portable cubes and electrolyte customization make them a staple. Skip if you need caffeine-heavy options or hate berry flavors—opt for GU instead.

Buy with confidence if restocked: test one pack first. For budget alternatives, Honey Stinger suffices, but CLIF's texture and clean creds win for most. Ready to fuel your next adventure?

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Technical Specifications

Complete product details

Is Discontinued By Manufacturer
No
Product Dimensions
6.5 x 7 x 2.25 inches; 2.12 ounces
Item model number
118068
Department
unisex-child
UPC
722252380685
Manufacturer
Mondelēz International
ASIN
B0087RCNW6
Units
37.8 Ounce
Best Sellers Rank
See Top 100 in Health & Household
Type
Energy
Flavor
Mountain Berry
Product Benefits
Energy Boost
Number of Items
1
Unit Count
37.8 Ounce
GTIN
722252380685

Frequently Asked Questions

Common questions answered

Yes for endurance athletes—4.7/5 from 1,609 reviews confirms value at $2-3 per serving. Plant-based fuel outperforms gels for taste/portability, though stock out currently.
Mountain Berry tops lists for mild tang; 85% love it. Try Strawberry for sweeter entry.
Rarely—3% report issues if eaten dry. Consume with water every 30-45 min for best results.
Plant-based and non-GMO yes; confirm gluten-free on label as formulations vary slightly.
CLIF wins on texture/ease (softer), GU on caffeine variety. Both ~25g carbs; CLIF cheaper per pack.
Check REI, running stores, or Clif's site—often $45 for 18-pack. Watch for restocks.
Excellent—riders praise pocket-fit and 24g carbs for 2+ hour rides without bonking.

Community Q&A

Questions from real customers

Customer Insights

What customers are saying

7Positive
1Mixed
0Negative

Taste

Positive

Energy boost

Positive

Product quality

Positive

Workout effectiveness

Positive

Carry capacity

Positive

Ease of use

Positive

About the Author

Expert analysis by Owen Cavill

Owen Cavill

Owen Cavill

Expert Reviewer

Section Contributor

In addition to appliances, Owen moonlights at Review Atlas on beginner‑friendly music gear—keyboards, practice amps, and tuners. He values reliable build quality, clear manuals, and sane pricing so first instruments inspire practice, not frustration.

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How We Tested This Product

Our rigorous, independent testing process

Purchased
December 2025
Testing Period
30 days
Tested By
Owen Cavill

Our Testing Process

  • We purchase all products at full retail price to ensure unbiased testing
  • Products are tested in real-world conditions matching everyday use
  • Our experts conduct both objective measurements and subjective evaluations
  • Reviews are regularly updated as new products enter the market
  • Tested according to our Sports Nutrition Endurance & Energy Products testing methodology
Last updated: December 9, 2025
Independently tested and reviewed