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SEMO Raceway — Layout & Terrain

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Tracks

4

Rides like

Loose, sandy and momentum-driven — soft berms, big roost, chop by the afternoon; drains well, usually prime 1–2 days after rain. Prime window: May, Sep, Oct.

Track Details

Character1/5 mile semi-banked clay oval, 300' sand/mud drag, plus ATV/Lawnmower/Motocross courses

Track DNA — what the dirt is really like

Sand
Hard-packLoamSand
  • ▸Deep, loose dirt that swallows the front wheel if you back off — carry momentum. Expect soft berms, big roost, and chop/whoops forming by the afternoon motos.
  • ▸Drains well — typically prime 1–2 days after a soak, when it’s tacky instead of slick.
  • ▸High silt (35%) — this dirt turns to DUST when dry. Expect water trucks, hazy late motos, and pack extra air-filter prep.
  • ▸Flat land — every jump and roller is built, which usually means a faster, more momentum-style track.
  • ▸Wettest months: Jan, Feb, Mar — highest mud/cancellation risk. Prime window: May, Sep, Oct.
Sand
55%
Silt
35%
Clay
10%
Series: BosketDrainage: Well drainedRelief: flat · ~4 m
What do these terms mean? ▾
Sand / Silt / Clay %:
What the topsoil is made of. More sand = looser and faster-draining. More clay = harder, slicker when wet. Silt is the fine dust-maker in between.
Loam:
A balanced sand/silt/clay mix — the tacky, rut-forming dirt riders love.
Blue-groove:
When dry hard-pack gets polished by tires into a shiny dark racing line — grippy for some tires, ice for others.
Drainage class:
USDA’s rating of how fast this ground sheds water — it predicts how soon after rain the track is rideable.
Soil series:
The official USDA name for this exact soil type (like a breed name for dirt).
Relief:
How much the ground rises and falls within the track’s ~1 km square — flat, rolling, or genuinely hilly.

Topsoil (0–15 cm) composition from USDA SSURGO soil survey. A guide to typical conditions — actual surface varies with prep, weather, and watering.

Riding Season

Mar – Nov
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F
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A
M
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Best (warm + dry) Wettest (mud risk) Bar = monthly rain
Best months: May, Sep, OctDriest: Sep, NovMud risk: Jan, Feb, MarPeak heat: JulAnnual rain: 51"

Practical riding season Mar – Nov; best in May, Sep, Oct (warm + dry); wettest / mud risk Jan, Feb, Mar; peak heat Jul (~89°F).

Best months to ride in Missouri→

Based on 2019-2024climate normals (Open-Meteo / ERA5) at this location — a planning guide; check the track's Facebook for current conditions before you haul.