Fuel Protocol

Purpose

Turn the linked evidence into a rehearsed decision plan for this event context.

Prerequisites

Check the actual route, expected duration, support rules, weather exposure and safe exit options. Rehearse familiar equipment and food; resolve health concerns before using a race checklist.

Applicability

Use duration, terrain, descent, environment, night exposure, support and recovery window to choose adaptations. Distance alone cannot determine a dose or readiness.

Prepare

Rehearse a feasible intake with familiar foods and adjust for duration, intensity, heat and tolerance; do not adopt a high target from one marathon experiment.

Execute

Plan verified water access and avoid forced drinking; sodium does not make excess water safe.

Evidence and transfer

The ISSN single-stage ultra position stand discusses intake, food tolerance and gut practice. Its scope is not a complete stage-race prescription. The existing high-carbohydrate marathon experiment does not establish a universal ultra dose.

Original context

GI durability and fallback

Build intake tolerance in ordinary training before race day, progressing only as the runner tolerates the format and concentration. When nausea appears, check recent effort, heat, drink concentration, the combined carbohydrate from gels and bottles, and time since the last successful intake; change one familiar variable at a safe stop rather than forcing an untested target. Persistent vomiting or inability to drink warrants event medical support. Research supports individualized gut practice; it does not identify one fix for every symptom.

Original context

How the fueling task changes

For a shorter 50K, check whether course duration is actually similar to your previous race. At 50 miles and 100K, rehearse repeated resupply. For 100 miles, include night access, changing food preference and crew handovers. In stage races, the next start makes meals between stages part of the plan; in continuous multi-day racing, eating and rest must coexist on the course.

Original context

When duration changes the problem

A shorter runnable 50K may prioritize simple access; 50 miles and 100K add repeated opportunities to notice loss of tolerance. Overnight 100 miles can add sleep pressure, changing food preference and slower aid-station decisions. In fixed stages, a GI problem may also compromise food after the finish and before the next start. These are planning distinctions, not proven distance-specific carbohydrate doses.

Original context

Recover

Recovery Protocol

Decision rules

If support, weather, intake or attention makes the next segment unsafe, stop at a safe location and involve event support; revise or end the plan. Checklist completion is not medical clearance.

Context adaptations

Recheck the next segment when terrain, heat, cold, altitude or support differs from training. Use organizer instructions and the linked environment guide; this collection supplies no universal environmental threshold.

Uncertainty

This operational sequence is an editorial application of bounded evidence, not a trial-validated algorithm. Linked claims show which findings transfer directly and which remain indirect.

Safety and escalation

Persistent vomiting, inability to drink, unsafe navigation or inability to stay awake calls for a safe stop and event medical/support assessment. Do not use food, sodium or a mental cue as clearance to continue.

Scope

Shared source for food, GI tolerance and hydration decisions across distances. Individual rehearsal governs transfer; hourly targets are not multiplied by distance.