The 2026 All Japan Dirt Trial Championship Round 4, Hokkaido Dirt Special in Sunagawa, was held at Auto Sports Land Sunagawa in Hokkaido from May 23rd to 24th.
Kentaro Fukushima won the SA1 Class.
In the D1 Class, Hayato Yamazaki came in 2nd place, and Hiroki Matsuda came in 3rd place.
In the D2 Class, Takuma Kamada took 2nd place.
Congratulations to everyone!
The vehicles equipped with WORK WHEELS are as follows:
| Class | Rank | Number | Name | Car name |
| PN2 | 4 | 076 | Hideki Kawashima | DL☆TEIN☆BRIG Swift |
| PN3 | 4 | 065 | Hideaki Sato | DL・KYB・KITBRZAT |
| PN3 | 5 | 39 | Tomohiro Ueno | DL Okuyama T Garage GR Nara 86 |
| PN3 | 6 | 36 | Junichi Ando | DL☆GRG Sapporo West☆GR86 |
| PN3 | 8 | 063 | Takayuki Koseki | DL・KYB・KIT・BRZ |
| PN3 | 11 | 38 | Takaaki Sakurai | BRIDE DL ENAPE WMGR86 |
| PN3 | 13 | 40 | Takashi Yumoto | Arai Motorsports BRZ |
| PN3 | 15 | 066 | Taku Kato | G Nemoto Fine Craft BRZ |
| N | 6 | 53 | Fumio Kawada | Shiba Repsol GR Takada Yaris DAT |
| N | 10 | 054 | Toshihiro Yamazaki | Repsol DL Okuyama TG Yaris |
| N | 13 | 55 | Shin Terada | TG Vertex DL Cerayaris |
| SA1 | 1 | 67 | Kentaro Fukushima | Smash DLitzz Swift |
| SA1 | 5 | 042 | Catherine | YHATSGC Swift RSK |
| SA1 | 10 | 69 | Takayuki Nakajima | TEIN Lubros DL Swift M |
| SA2 | 6 | 85 | Shinjiro Suzuki | Ocelot Dunlop Lancer |
| SC | 5 | 024 | Kazuya Sakata | WinmaxDLGMS Lancer |
| D1 | 2 | 012 | Hayato Yamazaki | YH Max Genshin Mirage |
| D1 | 3 | 102 | Hiroki Matsuda | Safety Consultant DLWM Cat Accelerator |
| D2 | 2 | 02 | Takuma Kamada | CastrolTEIN BRZ |
| D2 | 6 | 110 | Yasuhiro Onishi | YH・TEIN・AG Fiesta |
