THE CHALLENGE RACE 13 in 2025

Overview

THE CHALLENGE RACE 13 in 2025, held on Sunday, November 30, 2025, is a Japan Association of Athletics Federations (JAAF)-certified race on the Arakawa Riverside 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, it offers Full Marathon (42.195km), Half Marathon (21.0975km), 10km, 5km, and 1 Mile events, designed for record-breaking with a flat course (elevation <2m), 15 pacer groups (2:30:00–4:30:00 for Full Marathon, minimum 25km), hydration stations every 3–4km (sports drinks, water, salt tablets), and meal stations every 10km (sports yokan, tablets). Open to elementary school students (6+) and above able to complete their event safely, it has a total capacity of 1,300 (400 Full Marathon, 300 Half Marathon, 200 10km, 200 5km, 200 1 Mile), closing at 500 total entries or November 24, 2025. Registration is from May 27, 2025, to November 24, 2025, via https://race.rdc-run.com. Fees range from 2,000 yen (Junior Challenge) to 11,000 yen (Full Marathon), including bibs, timing chips (return mandatory, 10,000 yen fee if lost), record certificates (paper on-site or emailed within 3 days), and Aioi Nissay Dowa Insurance (first aid coverage; hospitalization/outpatient fees TBD). A TEAM ONE TOKYO partner event (Tokyo Marathon Foundation), it offers points based on finishing times (by gender/age) and participation, boosting chances for Tokyo Marathon entry. Access is a 12-minute walk from Nishidai Station (Toei Mita Line), with limited parking (~500 yen, 1km away). Described on X as “a PR machine with a super flat course,” it’s ideal for personal records (PRs) and runners of all levels.

Why Attend

• JAAF-Certified Fast Course: Ultra-flat 10km loop (<2m elevation), certified by JAAF, ensuring accurate distances and official times for PRs.

• Pacer Support: 15 pacer groups (Full Marathon: 2:30:00–4:30:00, Half Marathon: 1:15:00–2:15:00, 10km: 35:30–63:59, minimum 25km) for beginners to elites.

• Hydration & Nutrition: Stations every 3–4km (sports drinks, water, salt tablets) and meals every 10km (sports yokan, tablets) support long-distance performance.

• Inclusive Events: Full Marathon, Half Marathon, 10km, 5km, 1 Mile, and Junior Challenge for ages 6+ (elementary school and up).

• TEAM ONE TOKYO Partnership: Earn points for Tokyo Marathon entry based on finishing times and event participation (see TEAM ONE TOKYO website).

• Participant Perks: Bibs, timing chips, record certificates (paper or emailed), 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: “Smashed my half marathon PR thanks to the flat course!” – 2024 runner. “Pacers and yokan stations were clutch!” – X user.

Event Details

Events and Courses

Sunday, November 30, 2025 – Race Events:

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

• Schedule:

  • Sunday, November 30, 2025:

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

    • 9:10–9:20 AM: Opening Ceremony.

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

    • 9:30 AM: Start (Full Marathon, Half Marathon, 10km, 5km).

    • 9:35 AM: Start (1 Mile).

    • ~9:47 AM–2:00 PM: Race, visit hydration/meal stations, pass checkpoints (Full Marathon: 5km intervals, e.g., 5km at 32:00, 40km at 4:16:00).

    • ~2:00 PM: Full Marathon finish (4:30:00 limit).

• Course Features:

  • Full Marathon (42.195km, <2m elevation):

    • Route: 10km loop (start → 3km/7km hydration → start) x4, plus final 2.195km. See https://race.rdc-run.com for map.

    • Details: Time limit: 4:30:00. Checkpoints every 5km (e.g., 5km: 32:00, 40km: 4:16:00); late/unsafe runners stopped. Capacity: 400.

  • Half Marathon (21.0975km, <2m elevation):

    • Route: 10km loop x2, plus final 1.0975km. Time limit: 2:15:00. Checkpoints (e.g., 5km: 32:00, 20km: 2:08:00). Capacity: 300.

  • 10km (<2m elevation):

    • Route: 10km loop x1. Time limit: 90:00. Capacity: 200.

  • 5km (<2m elevation):

    • Route: 5km out-and-back. Time limit: 40:00. Capacity: 200.

  • 1 Mile (~1.609km, <2m elevation):

    • Route: 0.8045km out, foldback, finish. Time limit: 12:00. Capacity: 200.

  • Junior Challenge (TBD distance, likely 1 Mile/5km):

    • Route: TBD, assumed 1 Mile or 5km. Time limit: TBD. Capacity: TBD (included in 1 Mile/5km).

  • Format: JAAF-certified competitive race with timing chips (return mandatory, 10,000 yen fee if lost). 10km loop with hydration stations at start, 3km, 7km (sports drinks, water, salt tablets) and meal stations at start (sports yokan, tablets). Pacers for Full Marathon (2:30:00–4:30:00), Half Marathon (1:15:00–2:15:00), 10km (35:30–63:59), minimum 25km. 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 November 29). 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 (start, 3km, 7km; sports drinks, water, salt tablets), meals (start; 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: Elementary school students (6+) and above, healthy, able to complete chosen event safely within time limits (e.g., 4:30:00 for Full Marathon).

• 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 (Full Marathon, Half Marathon, 10km) every 5km; 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 chosen distance (e.g., Full Marathon: advanced, Half Marathon: intermediate, 5km/1 Mile: beginner-friendly). Withdraw if unwell (report to staff).

Capacity

• Total: 1,300 (400 Full Marathon, 300 Half Marathon, 200 10km, 200 5km, 200 1 Mile, including Junior Challenge). Closes at 500 total entries or November 24, 2025 (first-come, first-served).

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

• Maximum Tickets: 500 total entries across all events (e.g., 1 participant could purchase 1 ticket for any event; groups submit Excel file for multiple entries, capped at 500 total).

• Note: Contact [email protected] for vacancies.

Features

• Course Highlights: Flat 10km loop (<2m elevation) along Arakawa River, ideal for PRs. Urban setting near Todabashi Athletics Stadium, riverbank views.

• Pacers: 15 groups (Full Marathon: 2:30:00–4:30:00, Half Marathon: 1:15:00–2:15:00, 10km: 35:30–63:59, minimum 25km; may stop early if unsafe).

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

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

• TEAM ONE TOKYO: Earn points for Tokyo Marathon entry (based on finishing times, participation; see TEAM ONE TOKYO website).

• Services:

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

  • 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.

  • 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://race.rdc-run.com). 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 November 29).

Ticket Information

Event Date & Time

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

• Date: November 30, 2025 (rain or shine; canceled for severe weather, TBD by November 29).

• Schedule:

  • Sunday, November 30, 2025:

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

    • 9:10–9:20 AM: Opening Ceremony.

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

    • 9:30 AM: Start (Full Marathon, Half Marathon, 10km, 5km).

    • 9:35 AM: Start (1 Mile).

    • ~2:00 PM: Full Marathon finish (4:30:00).

• Duration: ~6 hours (8:00 AM–2:00 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://race.rdc-run.com (closes November 24, 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 ~November 27, 2025. Contact [email protected] if not received or for vacancies.

Rules

• Application:

  • May 27, 2025–November 24, 2025; closes at 500 total 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 (Full Marathon, Half Marathon, 10km) 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 November 29). 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

• Full Marathon: 11,000 yen.

• Half Marathon: 7,700 yen.

• 10km: 5,500 yen.

• 5km: 3,300 yen.

• 1 Mile: 3,300 yen.

• Junior Challenge: 2,000 yen.

• Pricing Range: 2,000–11,000 yen + ~500 yen fee.

• Ticket Range: Minimum 1 ticket per participant; maximum 500 total entries across all events (first-come, first-served).

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

Sales Schedule

• Registration: May 27, 2025–November 24, 2025. Closes at 500 total entries. Contact [email protected] for vacancies.

• Participation Notice: Emailed ~November 27, 2025. Contact secretariat if not received.

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

Program

• THE CHALLENGE RACE 13 in 2025:

  • Events: Full Marathon (42.195km), Half Marathon (21.0975km), 10km, 5km, 1 Mile (~1.609km), Junior Challenge (TBD).

  • Format: JAAF-certified competitive race with timing chips, pacers (15 groups). Line-up by pace (9:25 AM). Follow JAAF rules, traffic laws. Record certificates issued (paper or emailed).

  • Features:

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

    • Course Highlights: Flat Arakawa River loop (<2m elevation), urban views near Todabashi Stadium.

    • 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: “Flat course and pacers made my sub-4 a reality!” – X user.

Performers

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

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

• Partners: Aminovital, Coffee and Rice Balls PAMOJA, Tokyo Masters Athletics Federation, TEAM ONE TOKYO (Tokyo Marathon Foundation).

• Pacers: 15 groups (Full Marathon, Half Marathon, 10km).

• Volunteers: Contact [email protected] for opportunities.

Venue Details

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

• Date: November 30, 2025.

• Capacity: 1,300 (400 Full Marathon, 300 Half Marathon, 200 10km, 200 5km, 200 1 Mile).

• 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 November 24, 2025. Notice emailed ~November 27, 2025. Contact [email protected] for vacancies.

Inquiries

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

• Online: https://race.rdc-run.com.

Disclaimer

Jasumo offers a facilitation service for participants, including foreign tourists and non-Japanese residents, to access THE CHALLENGE RACE 13 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 ~November 27, 2025 (contact secretariat if not received).

Event Information: Check https://race.rdc-run.com 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

• “Fastest course I’ve run, pacers were spot-on!” – 2024 runner

• “Yokan stations kept me going in the marathon!” – X user

• “Jasumo’s help made registering from overseas easy.” – International participant

• “Perfect for PRs, flat and well-organized!” – 2024 runner