Sports

Marathon Time Predictor

Predict marathon finish time based on recent race performance using running formulas

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/marathon-time' \
  -H 'Content-Type: application/json' \
  -d '{"raceDistance":21.1,"raceTimeHours":1,"raceTimeMinutes":45,"raceTimeSeconds":0}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/marathon-time

Parameters

Name	Type	Required	Description
raceDistance	number	Yes	—
raceTimeHours	number	Yes	—
raceTimeMinutes	number	Yes	—
raceTimeSeconds	number	Yes	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-marathon-time": {
      "name": "marathon-time",
      "description": "Predict marathon finish time based on recent race performance using running formulas",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=marathon-time",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "marathon-time",
    "arguments": {
  "raceDistance": 21.1,
  "raceTimeHours": 1,
  "raceTimeMinutes": 45,
  "raceTimeSeconds": 0
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

Browse tools Open tool

Name

Type

Required

Description

raceDistance

number

Yes

—

raceTimeHours

number

Yes

—

raceTimeMinutes

number

Yes

—

raceTimeSeconds

number

Yes

—

{ "mcpServers": { "elysiatools-marathon-time": { "name": "marathon-time", "description": "Predict marathon finish time based on recent race performance using running formulas", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=marathon-time", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "marathon-time", "arguments": { "raceDistance": 21.1, "raceTimeHours": 1, "raceTimeMinutes": 45, "raceTimeSeconds": 0 } } }