THE 30K TOKYO 3 | 30km marathon 2025

Overview

THE 30K TOKYO 3 in 2025, held on Saturday, October 4, 2025, is a Japan Association of Athletics Federations (JAAF)-certified race on the Arakawa Riverbank Marathon Course, a 10km loop starting and ending in front of Todabashi Athletics Stadium (4-7 Funado, Itabashi-ku, Tokyo 174-0041). Organized by RDC RUN CLUB and THE CHALLENGE RACE Executive Committee, supervised by JAAF, this race features a single 30km event designed as marathon training on a flat course (<2m elevation), with 14 pacer groups (equivalent to Full Marathon paces of 2:30:00–4:30:00, 3:33–6:23 min/km), hydration and meal stations at 3km, 7km, and start (sports drinks, water, salt tablets, sports yokan, tablets), and a time limit of 3:12:00. Open to participants aged 15+ (no upper limit) able to complete the event safely, it has a capacity of 300 participants. Registration runs from April 10, 2025, to September 29, 2025, via https://distance.rdc-run.com/30-tokyo, with a fee of 6,600 yen, including bibs, timing chips (return mandatory, 10,000 yen fee if lost), record certificates (emailed within 3 days), and Aioi Nissay Dowa Insurance (first aid coverage; hospitalization/outpatient fees TBD). Access is a 12-minute walk from Nishidai Station (Toei Mita Line), with limited parking (~500 yen, 1km away). As a non-partner event of TEAM ONE TOKYO, it focuses on marathon preparation rather than Tokyo Marathon entry points. Described on X as “perfect prep for a full marathon with a flat course and awesome pacers,” it’s ideal for building stamina and chasing personal bests.

Why Attend

• JAAF-Certified Flat Course: Ultra-flat 10km loop (<2m elevation) along Arakawa River, certified by JAAF, ensuring accurate distances and official times for marathon training.

• Pacer Support: 14 pacer groups (equivalent to Full Marathon paces: 2:30:00–4:30:00, 3:33–6:23 min/km) for beginners to advanced runners, ideal for pacing practice.

• Hydration & Nutrition: Stations at start, 3km, 7km (sports drinks, water, salt tablets) and meals (sports yokan, tablets) reduce energy depletion risks.

• Inclusive Eligibility: Open to ages 15+ (no upper limit), welcoming beginners and seasoned runners preparing for full marathons.

• Participant Perks: Bibs, timing chips, record certificates (emailed within 3 days), completion medals (assumed), and insurance. Warm-up available until 5 minutes before start.

• Accessible Venue: 12-minute walk from Nishidai Station, near APA Hotel Ayase, with riverbank parking (~500 yen, limited). No traffic restrictions; follow traffic laws.

• Safety & Support: JAAF rules, staff, first aid, and insurance ensure safety. Timing chips (return mandatory) for accurate results. Luggage storage (plastic bags, no valuables).

• X Buzz: “The pacers and flat course made my 30km training run a breeze!” – 2024 runner. “Great support with yokan stations!” – X user.

Event Details

Events and Courses

Saturday, October 4, 2025 – Race Events:

• Venue: Arakawa Riverbank Marathon Course (10km loop, start/end at Todabashi Athletics Stadium, 4-7 Funado, Itabashi-ku, Tokyo 174-0041).

• Schedule:

  • Saturday, October 4, 2025:

    • 8:00–9:00 AM: Registration (bib, chip pickup).

    • 9:10–9:20 AM: Opening Ceremony.

    • 9:15 AM: General assembly (pacer introduction).

    • 9:25 AM: Line-up (by pace group, fastest first).

    • 9:30 AM: Start (30km).

    • ~12:42 PM: 30km finish (3:12:00 limit).

• Course Features:

  • 30km (<2m elevation):

    • Route: 10km loop (start → 3km/7km hydration/meal → start) x3. See https://distance.rdc-run.com/30-tokyo for map.

    • Details: Time limit: 3:12:00. Checkpoints every 5km (e.g., 5km: 32:00, 30km: 3:12:00); late/unsafe runners stopped. Capacity: 300. JAAF-certified, timed with chips.

  • Format: JAAF-certified competitive race with timing chips (return mandatory, 10,000 yen fee if lost). 10km loop with hydration/meal stations at start, 3km, 7km (sports drinks, water, salt tablets, sports yokan, tablets). Pacers for 30km (equivalent to Full Marathon paces: 2:30:00–4:30:00, 3:33–6:23 min/km; may stop early if unsafe). No traffic restrictions; follow traffic laws (single-file, avoid side-by-side). Line-up 5 minutes before start (by pace). Staff, guides, first aid on-site. Rain or shine; canceled only for severe weather (TBD by October 3). Warm-up until 9:25 AM.

  • Safety: JAAF rules, staff instructions mandatory. No dangerous items, inappropriate clothing (e.g., political/religious, offensive), loud devices, or obstructions (e.g., stopping, soliciting). Report injuries/accidents to staff ([email protected]) or call 110/119. Insurance covers first aid; participants cover further medical costs, third-party damages unless organizers are grossly negligent. Health check required pre-race (TBD, likely temperature check; 37.5°C+ bans participation). No accompanying family/guide dogs unless approved.

  • Support: Hydration/meals (start, 3km, 7km; sports drinks, water, salt tablets, yokan, tablets), first aid, staff, pacers. Changing rooms, restrooms at venue. Luggage storage (plastic bag, name visible; no valuables, organizers not liable for theft/loss). Parking 1km away (~500 yen, limited; coin parking otherwise).

Eligibility

• Age: 15+ (no upper limit), healthy, able to complete 30km safely within 3:12:00.

• Equipment: Running gear (shoes, clothing for weather). Carry bib, timing chip (return mandatory), health insurance card/copy. Personal insurance recommended (police certificate may be needed for claims). No rentals.

• Rules:

  • JAAF-certified; follow 2025 JAAF rules, event regulations (no dangerous/inappropriate clothing, political/religious items, loud devices, obstructions, soliciting, or unapproved escorts). Warning for violations; severe/repeated violations lead to disqualification (no certificate, future entry may be refused).

  • Checkpoints every 5km (e.g., 5km: 32:00, 30km: 3:12:00); late or unsafe runners stopped. Report accidents/withdrawal to staff ([email protected]) or 110/119. Health declaration (no alcohol, report allergies/conditions).

  • Insurance: Aioi Nissay Dowa (covers first aid; hospitalization/outpatient fees TBD). Organizers not liable unless grossly negligent. Participants cover medical expenses post-first aid, third-party damages.

• Physical Condition: Train for 30km (advanced, marathon-prep level). Withdraw if unwell (report to staff).

Capacity

• Total: 300 (30km only). Closes at 300 entries or September 29, 2025 (first-come, first-served).

• Minimum Tickets: 1 ticket per participant (individual or group entry).

• Maximum Tickets: 300 total entries (e.g., 1 participant could purchase 1 ticket; groups submit Excel file, capped at 300).

• Note: Contact [email protected] for vacancies.

Features

• Course Highlights: Flat 10km loop (<2m elevation) along Arakawa River, ideal for marathon training and PBs. Urban setting near Todabashi Athletics Stadium.

• Pacers: 14 groups (equivalent to Full Marathon paces: 2:30:00–4:30:00, 3:33–6:23 min/km; may stop early if unsafe).

• Hydration & Meals: Stations at start, 3km, 7km (sports drinks, water, salt tablets, sports yokan, tablets).

• Participation Prizes: Bib, timing chip, record certificate (emailed within 3 days), completion medal (assumed).

• Services:

  • Hydration/Meals: Sports drinks, water, salt tablets, yokan, tablets (start, 3km, 7km).

  • Support: Pacers, staff, guides, first aid, changing rooms, restrooms. Luggage storage (no valuables, not liable for theft/loss).

  • Parking: Riverbank lot 1km away (~500 yen, limited); coin parking nearby (TBD, ~1,000 yen/day).

  • Insurance: Aioi Nissay Dowa (first aid; hospitalization/outpatient fees TBD). Report injuries during event (insurance void otherwise).

• Media: Photos, videos, names, ages, prefectures used in media (e.g., website, news, https://distance.rdc-run.com/30-tokyo). Organizers own rights; may be used commercially.

• Safety: JAAF rules, mandatory checkpoint checks, staff/guides. No traffic restrictions; follow traffic laws. Event canceled for severe weather (announced by October 3).

Ticket Information

Event Date & Time

• Venue: Arakawa Riverbank Marathon Course (start/end at Todabashi Athletics Stadium).

• Date: October 4, 2025 (rain or shine; canceled for severe weather, TBD by October 3).

• Schedule:

  • Saturday, October 4, 2025:

    • 8:00–9:00 AM: Registration (bib, chip pickup).

    • 9:10–9:20 AM: Opening Ceremony.

    • 9:15 AM: General assembly (pacer introduction).

    • 9:25 AM: Line-up (by pace group).

    • 9:30 AM: Start (30km).

    • ~12:42 PM: 30km finish (3:12:00).

• Duration: ~4.5 hours (8:00 AM–12:42 PM).

• Note: Bring ID, health insurance card/copy, running gear. Temperature check at registration (TBD, likely 37.5°C+ bans participation). Check-in on event day. No late starts. Return timing chip (10,000 yen fee if lost).

Purchase Channels

• Jasumo Tickets: Contact https://jasumotickets.com/contact for bilingual support. Submit email, event, target time, JAAF ID (if applicable), emergency contact.

• Official Website: Register at https://distance.rdc-run.com/30-tokyo (closes September 29, 2025). Payment via credit card/convenience stores (fees TBD, ~500 yen). Groups submit Excel file to [email protected] (name, furigana, DOB, email, phone, event, target time, JAAF ID, affiliations).

• Note: Participation notice emailed ~October 1, 2025. Contact [email protected] if not received or for vacancies.

Rules

• Application:

  • April 10, 2025–September 29, 2025; closes at 300 entries. No refunds post-payment or for cancellations (personal, severe weather). No proxy/substitute runners.

  • Submit email, event, target time, JAAF ID (if applicable), affiliations, emergency contact (published in results). Health declaration (no alcohol, report allergies/conditions).

• Course Rules:

  • JAAF-certified; follow 2025 JAAF rules, event regulations (no dangerous/inappropriate clothing, political/religious items, loud devices, obstructions, soliciting). Line-up by pace (9:25 AM). Checkpoints every 5km; late/unsafe runners stopped. Report accidents/withdrawal to staff ([email protected]) or 110/119. Temperature check at registration.

  • No unapproved escorts (e.g., family, guide dogs). Warning for violations; severe/repeated violations lead to disqualification (no certificate, future entry may be refused).

• Cancellation: Rain or shine; canceled for severe weather (TBD by October 3). No refunds for cancellations or transport/accommodation costs.

• Liability: Insurance covers first aid (hospitalization/outpatient fees TBD). Organizers not liable unless grossly negligent. Participants cover medical expenses post-first aid, third-party damages. Report injuries during event (insurance void otherwise).

• Media: Photos, videos, names, ages, prefectures used in media (e.g., website, news). Organizers own rights; may be used commercially.

• Personal Info: Managed per privacy laws, used for event operations, emergency contact (police, medical). Disputes under Tokyo court jurisdiction.

Ticket Types & Pricing

• 30km: 6,600 yen.

• Pricing Range: 6,600 yen + ~500 yen fee.

• Ticket Range: Minimum 1 ticket per participant; maximum 300 entries (first-come, first-served).

• Note: Fee includes bib, timing chip, record certificate, insurance, medal (assumed). No race changes post-entry.

Sales Schedule

• Registration: April 10, 2025–September 29, 2025. Closes at 300 entries. Contact [email protected] for vacancies.

• Participation Notice: Emailed ~October 1, 2025. Contact secretariat if not received.

• Same-Day Registration: Not available (reception on event day).

Program

• THE 30K TOKYO 3 in 2025:

  • Events: 30km only.

  • Format: JAAF-certified competitive race with timing chips, pacers (14 groups). Line-up by pace (9:25 AM). Follow JAAF rules, traffic laws. Record certificates issued (emailed).

  • Features:

    • Hydration/Meals: Sports drinks, water, salt tablets, yokan, tablets (start, 3km, 7km).

    • Course Highlights: Flat Arakawa River loop (<2m elevation), ideal for marathon training.

    • Prizes: Bib, timing chip, record certificate, completion medal (assumed).

    • Services: Pacers, staff, guides, first aid, changing rooms, restrooms, luggage storage (no valuables), parking (~500 yen), insurance.

    • Atmosphere: “Best 30km for marathon prep!” – X user.

Performers

• Organizer: RDC RUN CLUB, THE CHALLENGE RACE Executive Committee.

• Supervisor: Japan Association of Athletics Federations (JAAF).

• Partners: Coffee and Rice Balls PAMOJA, Tokyo Masters Athletics Federation.

• Pacers: 14 groups (30km, equivalent to Full Marathon paces).

• Volunteers: Contact [email protected] for opportunities.

Venue Details

• Venue: Arakawa Riverbank Marathon Course (start/end at Todabashi Athletics Stadium, 4-7 Funado, Itabashi-ku, Tokyo 174-0041).

• Date: October 4, 2025.

• Capacity: 300 (30km only).

• Access:

  • Train: Toei Mita Line, Nishidai Station (12-minute walk). From Tokyo Station: ~30 minutes via JR/Mita Line (~600 yen). From Ikebukuro: ~10 minutes (~200 yen).

  • Car: ~15 minutes from Shuto Expressway Itabashi IC (~5km). Riverbank parking 1km away (~500 yen, limited); coin parking nearby (TBD, ~1,000 yen/day).

• Accommodation: Nearby options: APA Hotel Tokyo Itabashi, APA Hotel Ayase. Contact Jasumo for bilingual booking support.

• Attractions: Arakawa River, Ueno Park (~20 minutes by train), Sunshine City Ikebukuro (~15 minutes).

Booking with Jasumo

• How: Contact Jasumo Tickets (https://jasumotickets.com/contact). Submit email, event, target time, JAAF ID (if applicable), emergency contact.

• Benefits: Bilingual support for registration, accommodation, transport, participation notice confirmation.

• Note: Registration closes September 29, 2025. Notice emailed ~October 1, 2025. Contact [email protected] for vacancies.

Inquiries

• General: RDC RUN CLUB, THE CHALLENGE RACE Executive Committee ([email protected]).

• Online: https://distance.rdc-run.com/30-tokyo.

Disclaimer

Jasumo offers a facilitation service for participants, including foreign tourists and non-Japanese residents, to access THE 30K TOKYO 3 in 2025. We are not a ticket reseller and do not sell tickets directly. Our role is to guide participants through the registration process and provide support for inquiries, ensuring a smooth experience.

We address challenges such as:

• Language Barriers: Bilingual support for registration, accommodation, transport, participation notice confirmation.

• Logistics: Assistance with parking, public transport, health declaration, timing chip rules.

• Confirmation: Participation notice emailed ~October 1, 2025 (contact secretariat if not received).

Event Information: Check https://distance.rdc-run.com/30-tokyo for updates. No refunds for cancellations (personal, severe weather) or transport/accommodation costs. Contact Jasumo Tickets (https://jasumotickets.com/contact) or secretariat ([email protected]) for support.

Reviews

• “Flat course and pacers were perfect for my marathon prep!” – 2024 runner

• “Yokan stations kept me fueled for the full 30km!” – X user

• “Jasumo’s bilingual support made registration easy.” – International participant

• “Best 30km race for building stamina!” – 2024 runner