Thunder Valley Raceway Park — Layout & Terrain
← Back to Oklahoma track overviewAcreage
193 ac
Main Loop
1.50 mi
Fast hard-pack — tacky and quick when prepped, slick right after rain, blue-groove when bone dry; holds water — give it 3+ dry days after a real rain. Prime window: Apr, Sep, Oct.
Track DNA — what the dirt is really like
Hard-pack- ▸Hard-pack: tacky and FAST when it’s prepped, slick as a parking lot right after rain, and it can polish into shiny “blue-groove” lines when bone dry.
- ▸Holds water — plan on 3+ dry days after a real rain before it’s worth the haul. Check the track’s page/Facebook first.
- ▸High silt (47%) — 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: Apr, 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 MX53
Dunlop’s hard-pack tire — extra knobs for blue-groove grip.
Pirelli · Rear
Scorpion MX32 Mid-Hard
Mid-hard compound built for slick, packed surfaces.
Bridgestone · Rear
Battlecross X40
Hard-terrain rear with stiff, closely-spaced knobs.
Picked for this track's hard-pack 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 – DecPractical riding season Mar – Dec; best in Apr, Sep, Oct (warm + dry); wettest / mud risk Mar, Apr, May; peak heat Jul (~93°F).
Best months to ride in Oklahoma→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.