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Great Coasters International, Inc.

Great Coasters International, Inc. is an American wooden roller coaster manufacturer based in Sunbury, Pennsylvania. Founded in 1994 by Clair Hain Jr. and Mike Boodley, the company is known for dynamic twister layouts, Millennium Flyer trains, retracking and Titan Track. In Europe, GCI built Troy, Joris en de Draak, WODAN and Wicker Man.

Attractions 11
Parks 11
Profile

About Great Coasters International, Inc.

Great Coasters International, Inc. is an American wooden roller coaster designer and manufacturer based in Sunbury, Pennsylvania. Founded in 1994 by Clair Hain Jr. and Mike Boodley, the company became one of the most important modern wooden coaster builders. GCI is known for fast, low-to-the-ground layouts with many turns, lateral forces and constant changes of direction. It builds new wooden coasters, supplies Millennium Flyer, Mini-llennium Flyer and Infinity Flyer trains, performs retracking and developed Titan Track for hybrid applications. Notable projects include Troy, Joris en de Draak, WODAN, Wicker Man, Thunderhead and Mystic Timbers.

Reliability

Great Coasters International, Inc. reliability

Share of measured operating time in which the rides were open. Outages and maintenance count as downtime; closed and unknown do not count.

Past day 99.9%

73.1 h measured operating time

Past month 93.1%

2,450.5 h measured operating time

Since measurements began 95.9%

11,634.9 h measured operating time

Distribution

Boxplot

Spread of roller coaster lengths based on available RCDB data for this manufacturer's attractions.

Roller coaster length

11 coasters

0 m 400 m 800 m 1,200 m 1,600 m
Min
440 m
Q1
717 m
Median
877 m
Q3
1,017 m
Max
1,382 m
Company facts

Key facts

Founded
1994
Founded in
Sunbury, Pennsylvania, United States
Country of origin
United States
Founders
Clair Hain Jr., Mike Boodley
Headquarters
Great Coasters International, Inc., 2627 State Route 890, Sunbury, Pennsylvania 17801, United States
Status
Active
Company type
Wooden roller coaster designer, manufacturer, train supplier, retracking specialist and hybrid track developer
Notable products
Custom wooden roller coasters, Twister-style wooden coaster layouts, Racing and dueling wooden coasters, Millennium Flyer trains, Mini-llennium Flyer trains, Infinity Flyer trains, Titan Track steel track system, Wooden coaster retracking, Wooden coaster refurbishment, Hybrid wood and steel track applications, Coaster improvement projects
Notable patents
Titan Track patent-pending steel track system, Millennium Flyer articulated train design, Infinity Flyer train design for tighter turns, inversions and modern elements
Completeness
96%
Last enriched
June 18, 2026
Deep dive

Background of Great Coasters International, Inc.

Company profile

Great Coasters International, Inc. is one of the most important names in modern wooden roller coaster construction. The company was formed in Pennsylvania in 1994, when Clair Hain Jr. and Mike Boodley combined their experience in wooden coaster design, construction and field work in a new business. At a time when many wooden coasters still leaned heavily on traditional out-and-back or classic twister forms, GCI developed a recognizable style: fast track profiles that stay low to the ground, short hills, dense turns, strong lateral forces and a ride rhythm that almost constantly changes direction.

The first major project was Wildcat at Hersheypark, opened in 1996. Roar, Gwazi, Lightning Racer and Thunderhead followed, establishing GCI's reputation in the United States. International expansion became stronger from 2006 with Thunderbird in Finland and especially Troy at Toverland in 2007. Troy showed European parks that a modern wooden coaster did not have to be merely nostalgic, but could be an intense, flowing and guest-friendly headline attraction. Joris en de Draak at Efteling, WODAN - Timburcoaster at Europa-Park and Wicker Man at Alton Towers confirmed that GCI layouts fit well into highly themed European parks.

Train development is central to GCI's identity. The Millennium Flyer train was designed to navigate very twisted, compact wooden layouts in a comfortable and reliable way. Its open front, individual lap bars and articulated construction contributed to efficient dispatches and a recognizable ride experience. Later, Mini-llennium Flyer trains were introduced for smaller wooden coasters and Infinity Flyer trains for more modern elements, tighter turns and inversion-capable designs. With Titan Track, GCI expanded into steel track segments that can strengthen wooden and hybrid coasters, reduce maintenance and enable elements that are traditionally more difficult with wood.

In addition to new construction, GCI is important in renovation and improvement. The company works on retracking, train replacement and upgrade projects for existing wooden coasters, including rides originally built by other manufacturers. Examples such as GhostRider, The Legend, Yankee Cannonball, Predator and Joris en de Draak show that GCI does not only sell new rides, but can give older wooden coasters renewed life. It therefore represents a modern, service-oriented approach to wooden roller coasters.

GCI's position is therefore different from that of many steel coaster builders. The company does not sell a narrow set of standardized models, but usually designs project-specific wooden layouts tuned to the available terrain, park audience and maintenance philosophy. Cooperation with parks often begins with ride feel and capacity, but continues into site planning, wood selection, train configuration, later inspections and service. This long-term approach explains why many parks see GCI not only as a builder, but as a partner for the full life cycle of a wooden roller coaster.

History

Great Coasters International was founded in 1994 by Clair Hain Jr. and Mike Boodley. Both came from the world of wooden roller coasters, where design, field construction and maintenance are closely connected. The company established itself in Sunbury, Pennsylvania, and quickly built its own reputation. Its first coaster was Wildcat at Hersheypark, opened in 1996. Although that ride was later converted into Wildcat's Revenge, it formed the starting point for GCI's recognizable combination of wooden construction, compact turns and modern train development.

In the late 1990s Roar and Gwazi followed, and Lightning Racer in 2000 became the first major racing coaster in the portfolio. Thunderhead at Dollywood, opened in 2004, became a reference for the GCI style: flowing, fast, intense and constantly moving. The international period began with Thunderbird at PowerPark in Finland and became decisive with Troy at Toverland. European projects such as Joris en de Draak, WODAN - Timburcoaster, Heidi The Ride and Wicker Man followed.

From the 2010s onward, GCI broadened its role. The company became not only a builder of new wooden coasters, but also a specialist in renovation, retracking and train replacement. GhostRider at Knott's Berry Farm is an important example of such an improvement project. In 2018 the Infinity Flyer was announced, and Titan Track entered use from 2020. With that, GCI moved toward hybrid solutions in which wooden character and steel precision complement each other.

A second historical line is the professionalization of maintenance. Wooden roller coasters are living structures: weather, load, wood movement and intensive use require continuous attention. GCI therefore built its name not only on new projects, but also on recurring work on existing rides. The move toward Titan Track and Infinity Flyer came from the same history. The company saw that classic wooden coasters remain beloved, while parks expect more comfort, reliability and flexibility. The recent innovations are therefore not a break with the past, but a way to make wooden coasters more future-proof.

Innovation and technology

GCI technology starts with the wooden track itself. Layouts are designed to preserve speed and send the train almost continuously through turns, hills and directional changes. The experience does not come only from large drops, but from rhythm, lateral forces, short airtime moments and proximity to the structure. Supports, trackbed, banking and transition profiles therefore have to work very closely with train design.

The Millennium Flyer train is a core innovation. Its articulated construction allows the train to move smoothly through highly twisted wooden layouts, while individual lap bars and open fronts improve both operations and guest experience. Mini-llennium Flyer trains translate that idea to smaller family coasters. Infinity Flyer is designed for more modern requirements, with tighter turns, quicker crests and valleys, fewer welds and the ability to handle more extreme elements.

Titan Track adds a hybrid dimension. The system uses steel track sections in places where traditional wooden track requires heavy maintenance or where more intense elements are desired. According to GCI, Titan Track can be used for retracking high-stress sections, full new steel-track rides and combinations of wood and steel. This moves the company from pure wooden construction toward a technology that combines wood character, steel precision and long service life.

The engineering requires close attention to transition geometry. On a wooden coaster, a small deviation in banking or track profile can immediately affect comfort, wear and maintenance. GCI therefore emphasizes the role of engineers, project coordinators and field construction supervisors. The organization combines design drawings with practical site knowledge so theory and installation align. The same approach is used in renovations: first understand where load, roughness or material fatigue occurs, then choose new wood layers, train updates or Titan Track at the most demanding points.

Industry impact

GCI redefined the modern wooden roller coaster for parks that wanted a classic material feel without an old-fashioned ride. Its layouts proved that wood can be fast, flowing and compact, with intensity coming from constant movement rather than height alone. This made GCI attractive to regional parks, major theme parks and European resorts that wanted to integrate a wooden coaster into strong theming.

In Europe, Troy, Joris en de Draak, WODAN and Wicker Man gained high visibility. They helped reposition the wooden coaster as both a guest favorite and a themed headline project. In the United States, GCI kept the wooden segment relevant alongside steel coasters through rides such as Lightning Racer, Thunderhead, Mystic Timbers, Gold Striker and Texas Stingray.

The influence also extends to longevity. Through retracking, Millennium Flyer upgrades and Titan Track, GCI shows that wooden coasters do not have to age statically. They can be adjusted, made more comfortable and technically extended without losing their character.

GCI also influenced guest expectations. A wooden coaster no longer had to be primarily historic or rough; it could have modern pacing comparable to many steel rides. The open Millennium Flyer trains strengthened the feeling of speed and closeness to the track, while the layouts retained the physical language of wood. This made the manufacturer attractive to parks looking for a distinctive, photogenic and thematically useful coaster.

Current operations

GCI operates from Sunbury, Pennsylvania, where the official contact address and the core of the organization are located. The company presents itself as a partner for complete wooden coaster projects, train supply, renovation, retracking and service. Its product offer includes new wooden roller coasters, Millennium Flyer, Mini-llennium Flyer and Infinity Flyer trains, Titan Track and coaster improvement projects.

Current projects show that GCI remains active in both new construction and improvement work. The official project list includes recent installations such as Texas Stingray, Roaring Timbers and Zambezi Zinger, while the coaster improvement list documents extensive retracking and maintenance work. Through Titan Track, GCI can reinforce existing rides at high-stress points and expand future designs with steel track sections. The company therefore remains relevant for parks that want wooden character combined with modern comfort, lower maintenance burden and longer service life.

The cooperation with Skyline Attractions around engineering and the Infinity Flyer also shows that GCI selectively uses external expertise while preserving its brand identity. Current operations are therefore a combination of traditional craft, digital engineering, specialized train building and service agreements. GCI targets parks that want wooden character while still requiring contemporary standards of comfort and availability.

Design philosophy

GCI's design philosophy centers on rhythm. A good GCI coaster does not feel like a sequence of isolated elements, but like a continuous flow in which train, wooden structure and terrain reinforce one another. The first drop matters, but the identity comes mainly from successive turns, lateral forces, headchoppers, short hills and quick transitions. The aim is a wooden coaster with raw character without becoming uncontrolled.

Comfort is not treated as the opposite of intensity. The Millennium Flyer train was developed precisely to make compact, twisted layouts rideable without losing the energy of wood. The later Infinity Flyer and Titan Track show the same philosophy in a more modern form: the classic wooden coaster may evolve as long as physical proximity, sound, structure and the sense of speed remain. GCI therefore often designs for re-rideability, maintainability and a ride that seems to dance through the landscape.

The best GCI coasters therefore have an almost musical structure: accelerating, crossing, diving, turning and emerging above the structure again. Theme is usually not treated as a separate decorative layer, but as a way to give meaning to the wooden mass, tunnels and crossings. This allows a GCI coaster to feel both traditional and contemporary.

Timeline

Key milestones

  1. 1994 Great Coasters International is founded in Sunbury, Pennsylvania by Clair Hain Jr. and Mike Boodley.
  2. 1996 Wildcat opens at Hersheypark as the first GCI roller coaster.
  3. 1998 Roar opens at Six Flags America.
  4. 1999 Gwazi opens at Busch Gardens Tampa Bay as a major dueling wooden coaster.
  5. 2000 Lightning Racer opens at Hersheypark and becomes a major racing coaster showcase.
  6. 2004 Thunderhead opens at Dollywood and becomes a signature GCI twister coaster.
  7. 2006 Thunderbird opens at PowerPark in Finland, marking GCI’s expansion into Europe.
  8. 2007 Troy opens at Toverland and strengthens GCI’s reputation in Europe.
  9. 2010 Joris en de Draak opens at Efteling as a large racing wooden coaster.
  10. 2012 WODAN - Timburcoaster opens at Europa-Park.
  11. 2016 GhostRider at Knott’s Berry Farm reopens after a major GCI refurbishment.
  12. 2017 Mystic Timbers and InvadR open, expanding the company’s North American portfolio.
  13. 2018 Wicker Man opens at Alton Towers; GCI unveils the Infinity Flyer train concept at IAAPA.
  14. 2020 Titan Track begins public use on White Lightning as a steel-track enhancement system.
  15. 2022 Roaring Timbers opens at Sun World Hon Thom Nature Park.
  16. 2023 Zambezi Zinger opens at Worlds of Fun with Infinity Flyer trains and Titan Track applications.
Projects

Notable attractions

Wicker Man

Alton Towers

Troy

Toverland

Joris en de Draak

Efteling

Thunderhead

Dollywood

InvadR

Busch Gardens Williamsburg

WODAN - Timburcoaster

Europa-Park

Wildcat

Hersheypark

Roar

Six Flags America

Gwazi

Busch Gardens Tampa Bay

Lightning Racer

Hersheypark

Thunderbird

PowerPark

Kentucky Rumbler

Beech Bend

Renegade

Valleyfair

American Thunder

Six Flags St. Louis

El Toro

Freizeitpark Plohn

Prowler

Worlds of Fun

Gold Striker

California’s Great America

White Lightning

Fun Spot America Orlando

GhostRider refurbishment

Knott’s Berry Farm

Heidi The Ride

Plopsaland De Panne

Mystic Timbers

Kings Island

Texas Stingray

SeaWorld San Antonio

Zambezi Zinger

Worlds of Fun

Roaring Timbers

Sun World Hon Thom Nature Park

Overview

Attractions by Great Coasters International, Inc.

11 linked attractions