Istria300 feed zones powered by 4ENDURANCE
The official Istria300 Nutrition partner in 2026 is 4ENDURANCE
All courses (all three distances) will include feed zones at regular intervals, where 4ENDURANCE 2:1 gels, 4ENDURANCE 2:1 isotonic carbohydrate drinks, 4ENDURANCE 2:1 soft energy bars, water, coke, and bananas will be offered. At selected feed zones, potatoes will also be available.
All feed zones are organized by local partner clubs, who share the enthusiasm for road biking with the Istria300 participants.
All feed zones are organized by local partner clubs, who share the enthusiasm for road biking with the Istria300 participants. Furthermore, we are happy to announce that Tourism and Hospitality School Antona Štifanića, located in Poreč, will support selected feed zones with Tramezzini and meatballs.
Please note: No exchange of drinking bottles at the feed zones
Bottle exchange at feeding stations is no longer offered as a measure to protect the Istrian environment. Your starter pack contains one free Istria300 bidon.
At the feed zone in Oprtalj, you will get tomato pasta and the Istria300 truffle pasta.
2:1 LINE by 4ENDURANCE
The 2:1 Line by 4ENDURANCE is developed for endurance athletes targeting efficient carbohydrate intake during training and racing. All products are based on the 2:1 glucose-to-fructose ratio, delivering fast energy with improved carbohydrate absorption and excellent digestion comfort, even during high carb intake strategies.
The line includes gels, drinks, and bars, allowing athletes to combine different fuel sources depending on intensity, duration, and personal preference.
Main characteristics
- 2:1 glucose-to-fructose ratio
- 30 g carbohydrates per serving
- 100 mg sodium per serving
- Designed for targeting 60–90 g carbs/hour
- Easy on digestion
- Light taste
Fast-absorbing carbohydrate gel designed for quick and convenient energy intake during training and racing. Smooth texture and lighter taste for easier consumption during intense efforts.
Isotonic carbohydrate drink developed for sustained energy and hydration support during long-duration exercise. Light and refreshing taste, easy to drink during long efforts.
Soft energy bar delivering both fast and steady energy. Ideal for rides when solid fueling is preferred.
| Location | Istria300 | Istria209 | Istria135 |
|---|---|---|---|
|
Svetvinčenat |
44,5 km |
44,5 km |
44,5 km |
|
Labin |
115,0 km |
115,0 km |
|
|
Žminj |
144,0 km |
144,0 km |
69,5 km |
|
Borut |
196,0 km |
|
|
|
Oprtalj |
250,5 km |
| Location | Istria300 | Istria235 | Istria155 | Cycling club |
|---|---|---|---|---|
|
Svetvinčenat |
44,5 km |
44,5 km |
44,5 km |
BK Axa |
|
Labin |
115,0 km |
115,0 km |
|
BK Albona |
|
Križ Lindarski |
141,0 km |
141,0 km |
66,5 km |
BK Žminj |
|
Draguć |
195,5 km |
|
|
MTB Istra Pazin |
|
Oprtalj |
244,0 km |
174,0 km |
99,5 km |
MTB Istra Pazin |
|
Brtonigla |
271,0 km |
200,5 km |
126,5 km |
BK Novigrad |
|
Poreč |
300,0km |
236,0km |
156,0km |
BK Poreč |
