# Marlon Spiers – Cal.com booking page

> London-based Level 3 personal trainer and founder of ASPIER. I help people get stronger and run further, with 1:1 sessions in a private studio, at your home, or online. Not sure where to start? Book a free intro call.

Booking page: https://cal.com/marlonspiers

## Event types

- [In-person PT](https://cal.com/marlonspiers/in-person-pt): 60 min, confirmed instantly, event type id 7677906. A one-hour, one-to-one personal training session tailored to your goals and current ability. We’ll agree the location before your session. Details: https://cal.com/marlonspiers/in-person-pt.md
- [Online coaching (Weekly)](https://cal.com/marlonspiers/online-coaching-weekly): 30 min, confirmed instantly, event type id 7677459. Your weekly 30-minute video check-in as an online coaching client. We’ll review your training and progress, talk through any challenges, and adjust your plan for the week ahead. Bring your questions so you leave with clear next steps and the support you need. Details: https://cal.com/marlonspiers/online-coaching-weekly.md
- [Online coaching (monthly)](https://cal.com/marlonspiers/online-coaching-monthly): 30 min, confirmed instantly, event type id 7206867. Your monthly video call as an online coaching client. We'll go through how the last month went, what's working and what isn't, and set up your plan for the month ahead. Details: https://cal.com/marlonspiers/online-coaching-monthly.md
- [Free intro call](https://cal.com/marlonspiers/free-intro-call): 20 min, confirmed instantly, event type id 7193010. A relaxed 20-minute chat to talk through your goals, your training history and whether working together is a good fit. No pressure and no cost. If you can, fill in my intake form before we speak so I can make the most of our time: onboarding.aspier.uk Details: https://cal.com/marlonspiers/free-intro-call.md

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=<event type id>&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

Each event type's `.md` document lists its required booking fields and the `POST https://api.cal.com/v2/bookings` request (`cal-api-version: 2026-02-25`).

## More

- API docs: https://cal.com/docs/api-reference/v2/introduction