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Races Half marathon · Fishers, USA

Geist Half Marathon

Geist Half Marathon is a rolling half marathon in Fishers, USA, held each September. The loop circles Geist Reservoir, crossing bridges and using tree-lined paths. The organiser describes rolling hills and a challenging course. Early mornings in Fishers in September are usually mild, around 13 to 24°C, with some humidity. The rises around Fishers are small but relentless — train on similar terrain and race by effort, not pace.

Page rebuilt 2026-11-14 · race facts not independently verified — confirm dates and entries on the official race site

When

September

every year

Course

rolling

Half marathon

Conditions

Early mornings in Fishers in September are usually mild, around 13 to 24°C, with some humidity.

Racing this course well

The loop circles Geist Reservoir, crossing bridges and using tree-lined paths. The organiser describes rolling hills and a challenging course.

The rises around Fishers are small but relentless — train on similar terrain and race by effort, not pace.

Getting a place

Official Geist Half Marathon site →Checked November 2026

Race day

Start time
07:30
Also on the day
10k, 5k, 1 mile

The course in numbers

The route runs around Geist Reservoir with bridge crossings and rolling hills on the paths.

Layout
Loop

Worth knowing

  • The race is operated by the City of Fishers with Vision Events Management.
  • Runners arriving after 7:35 am are not allowed to start.

Pick your goal for Fishers

Pace charts, weekly structure and timelines for the most common half marathon goals:

We don’t hold a confirmed date for this edition, so any countdown comes from the date you enter here.

Build your training around Geist Half Marathon.

RunV works backwards from race day to today. Your plan adapts when life interrupts, and you approve every change. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.

Everything above stays free and complete — this is an optional next step, not a paywall.

Course profile, September conditions and how to pace it — the short version, in your inbox.

Asked often

When is the Geist Half Marathon?
It is held each September in Fishers, USA. Check the official Geist Half Marathon site for the exact date and entry windows.
Is the Geist Half Marathon course flat?
The loop circles Geist Reservoir, crossing bridges and using tree-lined paths. The organiser describes rolling hills and a challenging course.
How should I train for the Geist Half Marathon?
Build for the course you'll actually race at the Geist Half Marathon: rolling terrain, September conditions. RunV Premium builds a training plan around your goal time and race date, and lets you adapt it when life interrupts the Fishers build.

Not sure what to target? Predict your half marathon time from a recent race →

More half marathon races

Supplements research for this distance

Build for Fishers — around your actual life

RunV engineers your block backwards from race day in September — and adapts it when training doesn't go to script. You approve every change.

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