Best Races for a Personal Best
Ranked by five years of weather measurements on each race's own calendar day.
| Race | Date | Avg temp | Wet years | Score |
|---|---|---|---|---|
| 8th Gazi Half Marathon Running · Gaziantep | November 22, 2026 | 10.0°C | 0% | 100 · Excellent |
| Ankara Timed Run Running · Ankara | October 25, 2026 | 11.6°C | 20% | 95 · Excellent |
| Sagalassos Sky Ultra Trail Running · Ağlasun | November 13, 2026 – November 15, 2026 | 8.0°C | 20% | 92 · Excellent |
| Turkey Orienteering Championship Stage 2 - Aydın Multisport · Aydın | December 18, 2026 – December 20, 2026 | 9.9°C | 20% | 89 · Excellent |
| Turkish Orienteering Championship - Stage 1 - Tokat Multisport · Tokat | November 14, 2026 – November 16, 2026 | 9.6°C | 20% | 88 · Excellent |
| November 24 Teachers' Day Run Running · İstanbul | November 22, 2026 | 14.4°C | 20% | 88 · Excellent |
| KeşifRun Nilüfer Running · Bursa | November 22, 2026 | 13.7°C | 40% | 86 · Excellent |
| Soli 10K Running · Mersin | November 15, 2026 | 16.2°C | 0% | 85 · Excellent |
| Caddebostan Republic Run Running · Istanbul | October 25, 2026 | 15.6°C | 20% | 83 · Good |
| Silifke Grand Orienteering Event Multisport · Silifke | November 15, 2026 | 16.8°C | 0% | 83 · Good |
| Istanbul Indoor O Cup Multisport · İstanbul | December 27, 2026 | 9.1°C | 40% | 82 · Good |
| From the Father to the Mother Tribute Run Running · Izmir | November 8, 2026 | 17.1°C | 0% | 82 · Good |
| KeşifRun Datça Running · Mugla | April 4, 2027 | 16.6°C | 20% | 80 · Good |
| Antalya Ultra Marathon - From Blue to White Trail Running · Antalya | December 26, 2026 – December 27, 2026 | 11.5°C | 20% | 80 · Good |
| Istanbul 5 Days - Grand Bazaar Multisport · Istanbul | November 8, 2026 | 16.2°C | 40% | 77 · Good |
| Çatalkaya Ultra Trail Trail Running · İzmir | November 21, 2026 – November 22, 2026 | 13.7°C | 0% | 77 · Good |
| 27th International Arena AquaChallenge Swimming Championship (Göcek Leg) Open Water Swimming · Muğla | October 26, 2026 | 19.5°C | 0% | 74 · Good |
| Latmos Ultra Trail Running · Milas | November 14, 2026 | 14.4°C | 0% | 74 · Good |
| Çenedağ Ultra Trail Trail Running · Kocaeli | November 22, 2026 | 13.4°C | 20% | 74 · Good |
| 2nd Heliz Kaş Aquathlon Multisport · Kaş | November 13, 2026 – November 14, 2026 | 17.5°C | 40% | 73 · Good |
| 8th International Mersin Marathon Running · Mersin | December 13, 2026 | 13.6°C | 20% | 73 · Good |
| Taurus Mountain Race Cycling · Antalya | October 14, 2026 – October 24, 2026 | 14.1°C | 20% | 71 · Good |
| Lykos Half Marathon and Republic Public Run Running · Denizli | October 25, 2026 | 18.6°C | 0% | 70 · Good |
| Türkiye İş Bankası 48th Istanbul Marathon Running · Istanbul | November 1, 2026 | 15.1°C | 20% | 68 · Fair |
| Antalya O-FEST Orienteering Festival Multisport · Antalya | October 26, 2026 – October 31, 2026 | 21.1°C | 0% | 68 · Fair |
| Antalya Time Run Running · Antalya | November 15, 2026 | 16.0°C | 0% | 68 · Fair |
| Kar Spor Ida Ultra Trail Running · Edremit | November 28, 2026 – November 29, 2026 | 11.6°C | 80% | 68 · Fair |
| 27th International Arena Aquachallenge Swimming Championship - Marmaris Open Water Swimming · Marmaris | October 24, 2026 – October 25, 2026 | 20.3°C | 20% | 67 · Fair |
| Fethiye Likya'rı Marathon Running · Muğla | November 8, 2026 | 18.2°C | 20% | 67 · Fair |
| Manavgat Backyard Ultra Ultra · Antalya | April 10, 2027 | 20.5°C | 20% | 66 · Fair |
| St Nicholas Half Marathon Running · Demre | December 6, 2026 | 15.0°C | 80% | 66 · Fair |
| Heliz Kaş Half Marathon Running · Antalya | October 24, 2026 | 20.7°C | 0% | 63 · Fair |
| Antalya Canyon Ultra Trail Running · Antalya | November 14, 2026 – November 15, 2026 | 16.6°C | 20% | 62 · Fair |
| Bodrun Ultra Marathon Trail Running · Muğla | November 8, 2026 | 18.3°C | 0% | 60 · Fair |
| 91st Great Atatürk Run Running · Ankara | December 27, 2026 | 2.6°C | 40% | 59 · Fair |
| Fethiye Ultra Time-Limit Run Running · Muğla | October 31, 2026 | 19.0°C | 20% | 54 · Fair |
| UCI Gran Fondo World Series Antalya Cycling · Belek | November 5, 2026 – November 8, 2026 | 19.2°C | 20% | 53 · Fair |
| 2026 Alanya Triathlon - Europe Triathlon Cup & Para Cup Triathlon · Alanya | October 24, 2026 – October 25, 2026 | 20.8°C | 0% | 52 · Fair |
| Corendon Tahtalı Run to Sky Trail Running · Antalya | May 7, 2027 – May 9, 2027 | 20.6°C | 0% | 52 · Fair |
| IRONMAN 70.3 Turkey Triathlon · Belek | November 1, 2026 | 19.8°C | 20% | 51 · Fair |
| Varda Ultra Trail Trail Running · Adana | November 7, 2026 | 19.8°C | 20% | 51 · Fair |
| Veloturk Gran Fondo Çeşme Cycling · Çeşme | October 24, 2026 – October 25, 2026 | 19.7°C | 20% | 50 · Fair |
| AHULEX The Monument Race Cycling · Muğla | October 28, 2026 – November 2, 2026 | 20.4°C | 20% | 49 · Tough |
Method
For each race we take the daily mean temperature, rainfall and wind recorded on its calendar day over the last five years, from the Open-Meteo archive. Endurance performance peaks in cool conditions, so the score falls with distance from a distance-specific optimum (marathon ~7°C, half ~10°C, 10K ~12°C), with further penalties for frequent rain and strong wind. Races with fewer than three years of data are left unscored.
Source: Open-Meteo archive. Only races with at least 3 years of measurements are listed.