Deterministic Planning Baseline

Sub-2:20 Half Marathon Half Marathon Splits & GU & SiS Isotonic Timetable (Flat & Fast Course)

Target half marathon split card and threshold rhythm for a Sub-2:20 Half Marathon on a flat & fast course. Calibrated with GU & SiS Isotonic intake timing.

⚠️ HIGH RISK OF HITTING THE WALL (MILE 19 - 22)

Even Pacing Risks Running Out of Energy by Mile 20 at 10:36/mi

Over 70% of runners targeting 2h 18m 56s hit the wall in the final 10K by going out too fast in the opening miles. Negative split pacing and hydration timing locked in dossier.

Unlock Negative-Split Strategy & Split Card ($3.99) →

Predicted Finish

2h 18m 56s

Estimated target time

Target Mile Pace

10:36 / mi / mi

Goal cruising cadence

Gel Fueling Brand

Gu_Sis

Every 5 miles on course

Split Strategy

Negative Split

Conserve energy early

Official Marathon Fuel Pack

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Gel 100, Gel 160, and Drink Mix 320 bundled for your exact race pacing schedule.

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Want to adjust your specific scenario?

Change duration, guest ratios, vehicle mileage, or pacing goals in real time.

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