Running

Key West Half Marathon

Key West Half Marathon takes place on Sun, Jan 17, 2027 in Key West, United States. The main route is 21.1 km.

The Key West Half Marathon features a scenic 13.1-mile course winding through historic Old Town and along the waterfront of Key West, Florida.

What this race demands

The Key West Half Marathon requires sustained aerobic output over a standard 21.1-kilometer running distance on a flat coastal course.

Aerobic Endurance

Completing the 21.1-kilometer distance requires sustained cardiovascular capacity and pacing control throughout the half marathon.

Pacing Consistency

Navigating the historic Old Town and waterfront sections requires an even distribution of effort to prevent early fatigue.

Target 30 to 60 grams of carbohydrates per hour to maintain energy stores over the duration of the half marathon.

Pick the level closest to yours for an estimate of finish time on this course and the training a solid preparation needs.

Estimated finish

1:45–2:10

Peak-week training

5–7 h/week

A model estimate from distance, climbing and level, not a promise. Conditions, drafting and pacing move it.

IntervalCoach turns those weekly hours into a concrete plan built around your actual fitness. Start with this race as your goal

Race day at Key West Half Marathon is 21 weeks away. This is how a coach divides that time. The first phase starts now.

01Base9 weeks · Aug 24, 2026 – Oct 25, 2026
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Oct 26, 2026 – Dec 6, 2026
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Dec 7, 2026 – Dec 27, 2026
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Dec 28, 2026 – Jan 10, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jan 11, 2027 – Jan 17, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.

Organising this race?