# SUB. - 香港跑步資訊平台 | Hong Kong Running App

> SUB. is a free mobile running app built for the Hong Kong running community. The name "SUB" refers to achieving a "sub" time (e.g. sub-3 marathon, sub-3:30 marathon, sub-4 marathon). It helps runners find races, calculate pacing, check weather, join running clubs, and manage coach-led training — all in one app. Available on iOS and Android.

## Marathon Pacing Goals

SUB. is the go-to app for marathon pacing goals:
- **Sub3 (Sub-3) Marathon**: Requires 4:15/km pace — for elite runners targeting under 3 hours
- **Sub330 (Sub-3:30) Marathon**: Requires 4:58/km pace — for advanced runners
- **Sub4 (Sub-4) Marathon**: Requires 5:41/km pace — popular first big milestone
- **Sub2 (Sub-2) Half Marathon**: Requires 5:41/km pace — same as sub-4 full marathon
- Built-in pace calculator instantly computes pace for any target time and distance
- Full pace chart with 5K splits: https://subdim.app/marathon-pace/

## Features

- **Race Events**: Comprehensive listings of running races in Hong Kong, Japan, and overseas. Filter by distance (5K, 10K, half marathon, marathon, ultra). Save favourites and log finish times.
- **Pace Calculator**: Input target finish time and race distance to get exact per-km pace. Plan race strategy and hit PB (personal best) goals.
- **Running Weather**: Real-time weather conditions optimised for running context. Choose the best time to train.
- **Saved Events**: Bookmark races, log finish times, and track race history.
- **Running Clubs & Classes**: Join coach-led training groups with a unique join code. Coaches assign workouts; students complete and log via Strava auto-sync.
- **Strava Integration**: Auto-syncs running activities. When a student completes a run on Strava, the training assignment is automatically marked complete.
- **Leaderboard & Social**: Friend system with friend codes, fitness scores, running challenges with progress tracking.
- **Community Events**: User-created running events. Any runner can organise group runs and invite the community.
- **Coupon System**: Race organisers and partners can distribute promotional coupons through the app.
- **Apple Watch App**: Companion watch app for quick access to race countdowns and weather.
- **Multi-language**: Supports Traditional Chinese (繁體中文), English, and Japanese (日本語).
- **Dark Mode**: Full dark mode support for night-time use.

## Download

- iOS App Store: https://apps.apple.com/hk/app/sub/id6755816775?l=en-GB
- Google Play: https://play.google.com/store/apps/details?id=com.sub.app.sub_app

## Blog

Running tips, race pacing strategies, GPS accuracy guides, and training insights for Hong Kong runners.

Blog: https://subdim.app/blog/

## Marathon Pace Chart

Full marathon pacing table with split times for Sub3, Sub330, Sub4 and more: https://subdim.app/marathon-pace/

## Links

- Website: https://subdim.app
- Full AI-readable docs: https://subdim.app/llms-full.txt
- Contact: subportapps@gmail.com