diff --git a/trainpulse/prepare.py b/trainpulse/prepare.py
index e0dfb99..5ddeef4 100644
--- a/trainpulse/prepare.py
+++ b/trainpulse/prepare.py
@@ -54,9 +54,14 @@ def download(url: str, dest: Path) -> None:
     with httpx.stream("GET", url, follow_redirects=True, timeout=120,
                       headers={"User-Agent": C.USER_AGENT}) as r:
         r.raise_for_status()
+        total, done, t0, last = int(r.headers.get("content-length", 0)), 0, time.time(), time.time()
         with open(tmp, "wb") as f:
             for chunk in r.iter_bytes(1 << 20):
                 f.write(chunk)
+                done += len(chunk)
+                if time.time() - last > 30:  # Fortschritt, damit ein langsamer Download nicht wie ein Hänger aussieht
+                    last = time.time()
+                    log.info("  … %d von %d MB (%.1f MB/s)", done >> 20, total >> 20, done / (last - t0) / 1e6)
     tmp.rename(dest)