IsshinfuRUN 2025

Overview

The IsshinfuRUN 2025, held on Sunday, December 28, 2025, is a vibrant and inclusive running festival along the scenic Tone River riverbed near Yasaka Shrine in Kurihashi, Kuki City, Saitama Prefecture. Organized by the IsshinfuRUN Executive Committee, this event brings together runners of all ages and abilities for a day of fitness, fun, and community spirit. It features four distinct races: a 10-mile race (800 participants), a 10km race (500 participants), a Parent-Child 2km race (200 pairs), and the quirky Chestnut Man vs. Chestnut Woman Championship (400m, 100 participants). Set against the backdrop of the Tone River’s tranquil right bank, the event offers flat, beginner-friendly courses, free pork miso soup, awards for top finishers, and appearances by renowned guest athletes like Nozomi Tanaka, Yudai Idegi, Arata Fujiwara, and Nobuyuki Sato. Additional highlights include luggage storage, first aid, marathon insurance, and online record certificates. Applications are open from September 1 to December 7, 2025, via Jasumo Tickets, with X posts celebrating its “lively, family-oriented vibe and unique events that make it a standout running festival.”

Why Attend

• Diverse Events: Choose from competitive 10-mile and 10km races, a heartwarming Parent-Child 2km, or the fun-filled 400m Chestnut Man vs. Chestnut Woman Championship, catering to all ages and skill levels.

• Scenic Course: Run along the Tone River’s right bank, offering picturesque views, flat terrain, and water stations (3 for 10 miles, 1 for 10km), ideal for beginners and seasoned runners.

• Community Spirit: Enjoy free pork miso soup, a lively atmosphere with guest athletes, and awards for top 3 finishers in each race category, as praised on X for its “welcoming, festive energy.”

• Family-Friendly: The Parent-Child 2km fosters bonding, while the Chestnut Man vs. Chestnut Woman race adds playful competition for kids and adults.

• Comprehensive Services: Includes luggage storage (excluding valuables), first aid, marathon insurance, and online record certificates for all participants, ensuring a smooth experience.

• Accessible Venue: Just a 10-minute walk from Kurihashi Station, with ~300 free parking spaces at Kuki City Kurihashi Elementary School, though public transport is recommended due to limited parking.

Ticket Information

Event Date & Time

• Location: Tone River riverbed, in front of Yasaka Shrine, off Kurihashi, Kuki City, Saitama Prefecture (around 130km on the right bank)

• Date: Sunday, December 28, 2025

• Schedule:

  • 8:00 AM: Registration begins (until 15 minutes before each race)

  • 9:30 AM: 10 miles start

  • 9:40 AM: 10km start

  • 9:50 AM: Parent-Child 2km start

  • 11:45 AM: Chestnut Man vs. Chestnut Woman Championship (400m) start

• Duration: Varies by race (10 miles: 2h 10m, 10km: 1h 30m, 2km: 15m, 400m: no time limit)

Purchase Channels

• Official: Contact Jasumo Tickets (https://jasumotickets.com/contact) or visit the official website (https://www.shining-foundation.org/isshin-furun) for registration assistance and pricing details.

• Overseas Fans: Contact Jasumo Tickets (https://jasumotickets.com/contact) or visit the official website (https://www.shining-foundation.org/isshin-furun) for bilingual support and registration assistance.

• Resellers: Not supported; contact Jasumo Tickets to avoid invalid tickets or inflated prices.

Rules

• Open to healthy participants meeting eligibility criteria (minors under 20 require parental consent).

• No event changes, cancellations, rights transfers, or name changes post-registration; no refunds for personal reasons.

• Parent-Child 2km requires one parent (20+) to register, including child’s details (elementary school age); fee covers one pair.

• Chestnut Man vs. Chestnut Woman Championship open to boys/girls (elementary school age and up).

• Wear appropriate running attire; bring health insurance card for emergencies.

• No valuables storage; manage belongings personally or with group.

• Marathon insurance covers accidents (within policy limits); organizers provide first aid but are not liable beyond this.

• Follow organizer instructions for safety and event management; races may be stopped for emergency vehicles or traffic.

• No false information (e.g., age, gender) or substitute runners; violations lead to disqualification, award cancellation, and future bans.

• Photos/videos/records (name, age, gender, etc.) may be used in media (e.g., newspapers, website, pamphlets); publication rights belong to organizers.

• Event may be canceled/reduced for disasters (e.g., earthquake, typhoon); no refunds for cancellations or personal expenses (e.g., travel, accommodation).

• Time limits: 10 miles (2h 10m), 10km (1h 30m), Parent-Child 2km (15m), Chestnut Man vs. Chestnut Woman (none).

• Follow 2025 Japan Association of Athletics Federations (JAAF) regulations and event guidelines.

Ticket Types & Pricing

• Official Pricing (Tax Included):

  • 10 miles (Men/Women, High School–39, 40–59, 60+): 5,000 yen per person

  • 10km (Men/Women, High School–39, 40–59, 60+): 4,000 yen per person

  • Parent-Child 2km (Elementary student + guardian 20+): 4,000 yen per pair

  • Chestnut Man vs. Chestnut Woman Championship (400m, Boys/Girls, Elementary+): 1,000 yen per person

  • Contact Jasumo Tickets (https://jasumotickets.com/contact) or visit the official website (https://www.shining-foundation.org/isshin-furun) for pricing details.

• Reseller Pricing: Not available; contact Jasumo Tickets to avoid risks.

• Notes: Maximum 1 entry per person per race; no free entry categories. Parent-Child 2km fee covers one pair. Pricing details via Jasumo Tickets (https://jasumotickets.com/contact) or the official website (https://www.shining-foundation.org/isshin-furun).

Sales Schedule

• Registration Period: September 1, 2025, 12:00 AM–December 7, 2025, 23:59 JST

• Deadlines: December 7, 2025, 23:59 JST

• Same-Day: No same-day registration; pre-register via Jasumo Tickets.

• Resale: Not supported; contact Jasumo Tickets for inquiries.

Program

IsshinfuRUN 2025 (Running Festival): A dynamic event featuring four races along the Tone River’s right bank, designed for runners of all levels, with a focus on fun, fitness, and community:

• 10 miles (800 participants): Turnaround course from 130km to 138km; 3 water stations; awards for top 3 in each gender/age group (High School–39, 40–59, 60+). Time limit: 2h 10m.

• 10km (500 participants): Turnaround course from 130km to 135km; 1 water station near 5km point; awards for top 3 in each gender/age group. Time limit: 1h 30m.

• Parent-Child 2km (200 pairs): Turnaround course from 130km to 131km; ideal for families with elementary school children; awards for top 3 pairs. Time limit: 15m.

• Chestnut Man vs. Chestnut Woman Championship (400m, 100 participants): Special course from 130.4km to 130km; a playful, costume-themed race for boys/girls (elementary+); awards for overall 1st place per gender. No time limit. Event Highlights:

• Free Pork Miso Soup: Served to all participants, adding a warm, local touch.

• Guest Athletes: Features Nozomi Tanaka, Yudai Idegi, Arata Fujiwara, and Nobuyuki Sato, offering inspiration and photo opportunities.

• Awards: Top 3 in each 10-mile and 10km category (by gender/age), top 3 Parent-Child pairs, and 1st place overall (boys/girls) in the 400m race.

• Services: Luggage storage (excluding valuables), first aid station, marathon insurance, and online record certificates.

• Atmosphere: Festive stands, cheering crowds, and a community vibe, as noted on X for its “lively, inclusive energy.” The event adheres to 2025 JAAF regulations, with records measured and no revisions for race pauses (e.g., emergency vehicles).

Performers

• Organizer: IsshinfuRUN Executive Committee

• Guests: Nozomi Tanaka, Yudai Idegi, Arata Fujiwara, Nobuyuki Sato (professional athletes, adding star power and inspiration)

Venue Details

Tone River Riverbed, Yasaka Shrine (Kurihashi, Kuki City)

• Location: Around 130km on the right bank of Tone River, near Yasaka Shrine, Kurihashi, Kuki City, Saitama Prefecture (Google Maps)

• Date: December 28, 2025

• Capacity: 10 miles (800), 10km (500), Parent-Child 2km (200 pairs), Chestnut Man vs. Chestnut Woman (100)

• Access: 10-minute walk from Kurihashi Station (JR Line, Tobu Nikko Line); public transport recommended due to limited parking.

• Parking: ~300 spaces at Kuki City Kurihashi Elementary School (free); check availability on https://www.shining-foundation.org/isshin-furun due to potential event overlaps.

• Attractions: Yasaka Shrine, Tone River’s scenic views, nearby Kuki City cultural sites, and local dining options.

Booking with Jasumo

• How: Contact via Jasumo Tickets Contact Form (https://jasumotickets.com/contact). Specify race (e.g., 10 miles, 1 participant), category (e.g., Men 40–59, Parent-Child 2km), and preferences (e.g., accessibility needs).

• Benefits: Bilingual support, assistance with Japanese phone number requirements, group bookings, and application support for Parent-Child 2km or special entries.

• Note: Apply by December 7, 2025, to secure entry. First-come, first-served for limited spots (e.g., 800 for 10 miles, 200 pairs for 2km); high demand expected.

Inquiries

• General: IsshinfuRUN Executive Committee ([email protected], 070-8525-6113, weekdays 9:00–17:00)

• Online: Official Website (https://www.shining-foundation.org/isshin-furun)

• ID Division: Contact IsshinfuRUN Executive Committee ([email protected]) for accessibility or special entry inquiries.

• Venue Info: Contact IsshinfuRUN Executive Committee ([email protected]) for Tone River or Yasaka Shrine details.

Disclaimer

Jasumo offers a facilitation service for participants, including foreign tourists and non-Japanese residents, to access IsshinfuRUN 2025. We are not a ticket reseller and do not sell tickets directly. Our role is to guide participants through the official registration process, ensuring a smooth experience via authorized platforms.

We address common challenges such as:

• Language Barriers: Navigating Japanese-language registration systems is simplified with bilingual support.

• Platform Access: We assist with registration and payment processes, which may be complex for non-Japanese speakers.

• Limited Availability: With limited spots (e.g., 800 for 10 miles, 100 for 400m), we help manage deadlines to secure entry.

• Event Information: All necessary participation details (e.g., bibs, course maps, what to bring) are provided on the official website (https://www.shining-foundation.org/isshin-furun) or via Jasumo Tickets (https://jasumotickets.com/contact). Participation notices will be mailed one week before the event; ensure your email settings accept “shining-foundation.org” domain to avoid missing updates.

Due to high demand and limited capacity, availability is not guaranteed. Refunds are issued only if entries cannot be secured or in case of cancellation; no refunds for personal reasons or event reductions. Contact Jasumo Tickets (https://jasumotickets.com/contact) by December 7, 2025, to register.

Reviews

• “The Parent-Child 2km was a blast for my kid and me, and the pork miso soup was a nice touch!” – Parent on X

• “The Chestnut Man vs. Chestnut Woman race was so unique and fun, a highlight for everyone!” – Participant in their 20s

• “Great organization, scenic course, and meeting Nozomi Tanaka was incredible!” – Runner in their 40s

• “Jasumo made registering from abroad easy with clear guidance!” – International participant