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marathon.tokyo

https://marathon.tokyo· First analyzed 03 May 2026· Updated 03 May 2026
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marathon.tokyo
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Mobile

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Hosting Provider

Amazon Web Services (AWS)
aws.amazon.com

IP Address

52.194.103.213

Site Location

🇯🇵 Japanvia ip

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Apache

CDN

CloudFront

Nameservers

ns-1889.awsdns-44.co.uk.ns-489.awsdns-61.com.ns-962.awsdns-56.net.ns-1499.awsdns-59.org.

Performance

97

Core Web Vitals

Weight

First Contentful Paint
968 ms10%
Speed Index
1.3 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
81.4 MB
250 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Platform
AWS CloudFront
CDN
CloudFront

Technology Stack

10 Technologies Detected

Analytics

3
Google Analytics
Google Analytics 4
Facebook Pixel

Libraries

1
jQuery

UI Components

1
Slick Carousel

Other

1
Polyfill.io

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Apache

SEO Analysis

D51/100
14
9
1
Meta Tags5/15
Content11/12
Headings1/8
Technical11/21
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile1/4
Indexability3/3
M
marathon.tokyomarathon.tokyo

トップページ | 東京マラソン2026

「東京がひとつになる日。」東京マラソン2026の大会公式ウェブサイトです。コースマップ、エントリー情報などご確認いただけます。

Title Length19 chars

Recommended: 50-60 chars (~115px / 580px)

Description Length63 chars

Recommended: 120-160 chars

Issues (1)

  • • Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F38/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
8/25

AI Bot Access

14/14 accessible
AI Search
OAI-SearchBot
PerplexityBot
Claude-SearchBot
Gemini-Deep-Research
DuckAssistBot
Training
GPTBot
ClaudeBot
Google-Extended
Meta-ExternalAgent
Bytespiderinfo
Amazonbot
Applebot-Extended
CCBotinfo
Fetch
ChatGPT-User

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:3%
Words:698
Token eff.:Optimal
Sections/1K:2.9
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1.3w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
B
74/100
10
Passed
5
Critical
0
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
13/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
Verifies form fields have labels, error messages are clear, and inputs are properly associated.
Color & Contrast
15/15
Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
Keyboard & Focus
9/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
7/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
28/100
F
8.42 g
CO₂e / view
81.4 MB
Page Weight
5%
Cleaner Than
New Visitor
9.62 g
vs
Returning (cached)
4.81 g
Annual (10K/mo)
1010.3 kg
Emission Segments
Data Center
412 mg
Network
2.47 g
Device
5.53 g
Resource Breakdown
JavaScript
165.4 KB
Images
16.2 MB
CSS
64.2 MB
HTML
65.2 KB
Other
807.4 KB
Green Hosting Verified
Amazon Web Services (AWS)
Provider Match
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
A

Security Score

86%Very Good
Static / Informational

HTTPS

No WAF

159d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

11.09.2025

Valid Until

09.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

marathon.tokyo*.marathon.tokyo

SHA-256 Fingerprint

AC:FF:53:D8:5E:D6:50:F0:78:3A:F4:44:E7:81:33:1E:62:5D:2B:39...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges
bytes
age
335
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Sun, 03 May 2026 00:10:07 GMT
server
Apache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

Domain Information

marathon.tokyo

Domain Age
11y 11m

Created

06.06.2014

Expires

06.06.2026

Last Updated

22.12.2025

Registrar

GMO Internet Group, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
D
52/100
Mobile Friendly1 breakpoint
Viewport Meta
The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
Responsive Design
Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
Touch Icons
Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
Readable Font Size
Base font size should be at least 16px on mobile to ensure text is readable without zooming.
Relative Units
Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
No H-Scroll Risk
No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
Tap Targets OK
Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
No Fixed Widths
No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
Viewport
width=device-width, initial-scale=1
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Poppins + ZenKakuGothicAntique

WCAG Partial
48/100
Readability
/30
20/30

16px · LH --

Hierarchy
/20
7/20
WCAG
/25
12/25

1:1 min contrast

Performance
/25
9/25

3 fonts · 4 req

Heading Font

Poppins

Sans

Body Font

ZenKakuGothicAntique

Sans16px

Contrast Ratio

1:1

4 issues

Reading Comfort

~54 CPL

Optimal (45–75)
46px
h3
14px
h4
16px
p

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line length: ~54 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 28/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Buy on MyFontsFlesch 28

Color Palette

9 unique colors
21:1 AAA Dark
#000000
Background· 64.2%
#ffffff
Background· 25%
#c8bca1
Primary· 2.1%
#bb7f5c
Secondary· 2%
#eae7d9
Secondary· 2%
#440004
Accent· 0%

Business & Marketing Stack

5 Tools Detected

Enterprise

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

1
Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

2
Facebook SDKFree
Twitter/X WidgetsFree

Social widgets and sharing tools

3

Categories

5

Total Tools

0

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

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Scripts & Styles

27 Resources

20
Scripts
7
Styles
6
Async
0
Defer

Top Script Sources

local(12)googletagmanager.com(3)connect.facebook.net(2)google-analytics.com(1)google.com(1)

Website Identity

marathon.tokyo

11 years old
Location detected: 🇯🇵 Japanvia ip
GMO Internet Group, Inc.ja

Sponsored

Last analyzed: 03 May 2026 at 00:16

Historical Analysis & Change Tracking