Info
| Last name | de Haan |
| First name | Sierk-Jan |
| Nationality |  Netherlands |
| Date of birth | 20-06-1981 |
| Age | 44 |
About Sierk-Jan de Haan
Sierk-Jan de Haan is a Dutch professional cyclist, 44 years old, who currently rides for Team Visma | Lease a Bike. Turned professional in 2004. Active in road cycling.
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
| 26-08 | 13 | Ronde van Midden-Nederland (1.2) | |||||
| 17-08 | 68 | Dutch Food Valley Classic (1.1) | |||||
 Kreiz Breizh Elites (2.2) | |||||||
| 92 |  Standings | ||||||
| 30-07 | 103 | Stage 4Carhaix - Rostrenen (169.0km) | |||||
| 29-07 | 121 | Stage 3Plouguernével - Ploërdut (102.0km) | |||||
| 29-07 | 114 | Stage 2Carhaix - Cleden-Poher (12.0km) | |||||
| 28-07 | 111 | Stage 1Calanhel - Plouray (198.0km) | |||||
| 24-06 | DNF | National Road Championships - Netherlands (CN) | |||||
| Ster ZLM Toer GP Jan van Heeswijk (2.1) | |||||||
| 124 | Standings | ||||||
| 17-06 | 120 | Stage 4Schijndel - Boxtel (182.0km) | |||||
| 16-06 | 113 | Stage 3Verviers - Jalhay (184.0km) | |||||
| 15-06 | 132 | Stage 2Nuth - Nuth (167.0km) | |||||
| 14-06 | 141 | Stage 1Eindhoven - Sittard-Geleen (151.0km) | |||||