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Splinter Creek Dirt Riders
Alton, Illinois
Owner: Splinter Creek Dirt Riders (AMA-chartered club, est. 1970; Inc form likely)
Weather & Rideability
TodayAbout
Splinter Creek Dirt Riders is a long-running club motocross track north of Alton in Fosterburg, Illinois. The club hosts AMA District 18 events, and the MOVMX series raced here as recently as September 2025.
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.
- ▸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 (81%) — 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, May, Jul — highest mud/cancellation risk. Prime window: May, 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.
View on Amazon →Pirelli · Rear
Scorpion MX32 Mid-Soft
Versatile mid-soft compound for loamy, mixed dirt.
View on Amazon →Picked for this track's intermediate surface · Amazon affiliate links — MWR earns a small commission at no extra cost to you.
Topsoil (0–15 cm) composition from USDA SSURGO soil survey. A guide to typical conditions — actual surface varies with prep, weather, and watering.
Dial It In for Splinter Creek Dirt Riders
Setup tuned to this track's verified soil & terrain
Air filtration · Clean spare air filter
Dry mixed dirt still kicks up fine dust — a clean, properly oiled spare keeps power consistent across a long race day.
Suspension · Sag / suspension tools
Rolling terrain mixes natural and man-made faces — getting your race sag right keeps the bike balanced through both.
As an Amazon Associate we earn from qualifying purchases. Recommendations are general guidance from soil/terrain data — not a substitute for your own setup.
Riding Season
Mar – OctPractical riding season Mar – Oct; best in May, Sep, Oct (warm + dry); wettest / mud risk Mar, May, Jul; peak heat Jul (~86°F).
Best months to ride in Illinois→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.
Practice & Race Schedule
Practice days, race dates, and fees change week to week and are posted by the track — most run their schedule through Facebook. Always confirm the current days before you load up and head out.
Amenities
Contact
Worth the Haul
Nearest essentials (approx. straight-line miles)
Fuel · QuikTrip
Hospital · Alton Mental Health Center
Camping · Wischixin
Lodging · Comfort Inn & Conference Center
Data: OpenStreetMap. Verify before relying on it for an emergency.
Location
Common questions about Splinter Creek Dirt Riders
When is the best time to ride at Splinter Creek Dirt Riders?
Splinter Creek Dirt Riders's best riding months are typically May, Sep, Oct — warm with the lowest, most predictable rainfall. Mar, May, Jul are the wettest, highest mud-risk months. The practical riding season runs about Mar – Oct.
What kind of dirt does Splinter Creek Dirt Riders have?
Splinter Creek Dirt Riders sits on Marine-series soil — a intermediate, loamy surface. An intermediate-terrain tire is the safe all-around choice here.
Is Splinter Creek Dirt Riders hilly or flat?
Splinter Creek Dirt Riders has rolling terrain, with moderate natural elevation change worked into the layout. (~30 m of local relief.)
What's near Splinter Creek Dirt Riders?
Closest amenities to Splinter Creek Dirt Riders: fuel ~8.6 mi, camping ~8.7 mi, a hospital ~7.5 mi, lodging ~18.2 mi. Worth planning fuel and supplies before you haul out to rural tracks.