Maurten Fuel Planner

Maurten race fuel planner. Calculate how many Gel 100 or Gel 160 packs you need for your marathon or half marathon based on your finish time.

Plan your race fueling with Maurten products. Calculate how many Gel 100s (25g carbs) or Gel 160s (40g carbs) you need based on your finish time and carb target.

Gel 100 (25g) vs Gel 160 (40g) count
Pairs with Maurten Drink Mix 160 or 320
Carry strategy for marathon race day

How to plan race fueling with Maurten

Calculate your Maurten gel count based on race distance and carb target.

Enter your race details: Choose your distance and enter your goal finish time.
Set your carb target: Pick a carbs/hour target (60-90g recommended).
Choose your Maurten products: Convert total carbs into Gel 100, Gel 160, or a mix with Drink Mix.

Frequently asked questions

How many Maurten gels do I need for a marathon?

It depends on your carb target and which gel you use. At 60g/hour over 4 hours: about 10 Gel 100s or 6 Gel 160s. Mix and match with Drink Mix to reduce what you carry.

Should I use Maurten Gel 100 or Gel 160?

Gel 160 delivers more carbs per packet (40g vs 25g), so you carry fewer. Gel 100 is easier to dose in smaller amounts. Many runners use Gel 160 for simplicity.

Fueling reference

Race-day carb targets and gel counts by finish time (baseline, no body weight entered)
Race	Finish time	Carbs/hour	Total carbs	Calories	Gels
Half marathon	1:20	45 g/hr	60 g	240 kcal	2
Half marathon	1:35	45 g/hr	71 g	284 kcal	3
Half marathon	1:50	45 g/hr	83 g	332 kcal	3
Half marathon	2:05	45 g/hr	94 g	376 kcal	4
Half marathon	2:20	45 g/hr	105 g	420 kcal	4
Marathon	2:50	75 g/hr	213 g	852 kcal	5
Marathon	3:15	75 g/hr	244 g	976 kcal	5
Marathon	3:45	75 g/hr	281 g	1124 kcal	6
Marathon	4:15	75 g/hr	319 g	1276 kcal	7
Marathon	4:45	75 g/hr	356 g	1424 kcal	7
Marathon	5:15	75 g/hr	394 g	1576 kcal	7

Other TrainPace tools

For AI agents

Every page on this site has a Markdown mirror at the same path with a .md suffix (for example /calculator.md), and honors an Accept: text/markdown request header on the HTML URL. The calculations here are also available as callable tools through a free public MCP server — no account or API key.