Roc Solid MX — Layout & Terrain
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8 ac
Season
Practice days announced in advance via website/Facebook
Grippy loam — takes ruts, holds a line, and rewards smooth riding; drains well, usually prime 1–2 days after rain. Prime window: Aug, Sep, Oct.
Track Details
Track DNA — what the dirt is really like
Intermediate- ▸Loam — the good stuff. Takes ruts, holds a line, and rewards smooth riding. This is the surface most tires and stock suspension are happiest on.
- ▸Drains well — typically prime 1–2 days after a soak, when it’s tacky instead of slick.
- ▸High silt (66%) — this dirt turns to DUST when dry. Expect water trucks, hazy late motos, and pack extra air-filter prep.
- ▸Rolling ground — natural elevation worked into the layout, so the track flows instead of feeling like a flat field with jumps.
- ▸Wettest months: Mar, Apr, May — highest mud/cancellation risk. Prime window: Aug, Sep, Oct.
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.
Tires that work on this dirt
Dunlop · Front & Rear
Geomax MX33
The most popular soft-to-intermediate tire — safe all-around pick.
Pirelli · Rear
Scorpion MX32 Mid-Soft
Versatile mid-soft compound for loamy, mixed dirt.
Maxxis · Rear
Maxxcross MX-ST
Value intermediate-terrain rear that wears well.
Picked for this track's intermediate surface.
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 – NovPractical riding season Mar – Nov; best in Aug, Sep, Oct (warm + dry); wettest / mud risk Mar, Apr, May; peak heat Jul (~88°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.