1. Germany

2. Worldwide

• Laufreport.de (reports)
• Lauftreff.de (community)

• Laufforum.de

• Ultra-marathon.org

• Runnersworld

• Complete Running (Articles)

• Running Competitor

1. Europe

2. Worldwide

• Running Calendar Europe

• Lauftreff.de (Germany)

• Laufkalender.ch (Switzerland)

• Marathon Guide.com

• Running Calendar.com

• Ultra Marathon Running.com

1. Marathons Europe

2. Marathons Worldwide

• Berlin Marathon

• Hamburg Marathon

• Stockholm Marathon

• London Marathon

• New York City Marathon

• Boston Marathon

3. Ultras

4. Other events

• 100km from Biel

• Arctic Ultra

• Spartathlon in Greece

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