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 |
| Mülkiye Republic Run Running · Ankara | October 29, 2026 | 11.5°C | 20% | 94 · Excellent |
| Ömer Besim Cross Country Run Running · İstanbul | November 15, 2026 | 12.8°C | 20% | 93 · Excellent |
| Cappadocia Marathon Running · Nevşehir | November 8, 2026 | 9.2°C | 0% | 92 · 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 - Edirne Multisport · Edirne | November 14, 2026 – November 16, 2026 | 9.6°C | 20% | 88 · Excellent |
| Run Nysa Running · Aydın | October 18, 2026 | 14.6°C | 20% | 87 · Excellent |
| KeşifRun Nilüfer Running · Bursa | November 22, 2026 | 13.7°C | 40% | 86 · Excellent |
| Atatürk Commemoration Cross Country Run Running · Ankara | November 10, 2026 | 8.9°C | 20% | 85 · Excellent |
| Soli 10K Running · Mersin | November 15, 2026 | 16.2°C | 0% | 85 · Excellent |
| Bosphorun Quarter Marathon - Bebek/Beşiktaş Running · Istanbul | October 18, 2026 | 14.5°C | 40% | 83 · Good |
| 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 |
| Ankara Botanik Backyard Ultra Team Race Ultra · Ankara | September 26, 2026 | 17.1°C | 0% | 82 · Good |
| 17th International Zeytinburnu Republic Run Running · Istanbul | October 25, 2026 | 15.9°C | 20% | 82 · Good |
| From Father to Mother Tribute Run Running · İzmir | November 8, 2026 | 17.1°C | 0% | 82 · Good |
| Istanbul Indoor O Cup Multisport · İstanbul | December 27, 2026 | 9.1°C | 40% | 82 · Good |
| Presidential Half Marathon Running · Ankara | October 11, 2026 | 14.5°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 |
| Salomon Cappadocia Ultra-Trail Ultra · Ürgüp | October 16, 2026 – October 17, 2026 | 13.2°C | 0% | 78 · Good |
| ASMMMO 10K Road Race Running · Ankara | September 27, 2026 | 18.4°C | 0% | 77 · Good |
| Istanbul 5 Days - Grand Bazaar Multisport · Istanbul | October 24, 2026 – October 25, 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 |
| I'm Running Istanbul – European Leg, Yenikapı Running · İstanbul | October 4, 2026 | 18.1°C | 20% | 75 · Good |
| International Çorlu Half Marathon Running · Çorlu | October 18, 2026 | 13.8°C | 60% | 75 · 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 |
| Beypazarı Ultra Trail Trail Running · Beypazarı | October 3, 2026 | 15.4°C | 0% | 71 · Good |
| Taurus Mountain Race Ultra · Niğde | October 16, 2026 – October 24, 2026 | 14.1°C | 20% | 71 · Good |
| Kayseri Half Marathon Running · Kayseri | September 20, 2026 | 18.6°C | 0% | 70 · Good |
| Lykos Half Marathon and Republic Public Run Running · Denizli | October 25, 2026 | 18.6°C | 0% | 70 · Good |
| Anadolu Half Marathon Running · Istanbul | October 11, 2026 | 17.8°C | 20% | 69 · Fair |
| 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 |
| Düzce Efteni Duathlon Duathlon · Düzce | September 27, 2026 | 19.5°C | 0% | 67 · Fair |
| 15th International Afşin Elbistan Ultramarathon Ultra · Elbistan | October 3, 2026 | 16.4°C | 0% | 67 · 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 Lycian Way Marathon Running · Muğla | November 8, 2026 | 18.2°C | 20% | 67 · Fair |
| Anadolu Sigorta One More Step Run Running · İstanbul | September 20, 2026 | 20.7°C | 20% | 66 · Fair |
| Eker I Run Running · Bursa | October 4, 2026 | 16.8°C | 0% | 66 · Fair |
| Ölüdeniz Open Water Open Water Swimming · Fethiye | October 10, 2026 – October 11, 2026 | 21.8°C | 0% | 66 · Fair |
| 2nd International Ordu Half Marathon Running · Ordu | October 18, 2026 | 15.2°C | 80% | 66 · Fair |
| Manavgat Backyard Ultra Ultra · Antalya | October 31, 2026 | 20.5°C | 20% | 66 · Fair |
| St Nicholas Half Marathon Running · Demre | December 6, 2026 | 15.0°C | 80% | 66 · Fair |
| Dragon Festival (Istanbul September) Multisport · İstanbul | September 19, 2026 – September 20, 2026 | 20.8°C | 20% | 65 · Fair |
| 1st Amasra Çeşm-i Cihan Run Running · Amasra | September 13, 2026 | 20.8°C | 20% | 64 · Fair |
| Urla'da BirİZ Social Responsibility Run Running · Urla | September 27, 2026 | 22.2°C | 0% | 64 · Fair |
| Büyükada Half Marathon Running · İstanbul | September 27, 2026 | 20.5°C | 0% | 63 · Fair |
| Heliz Kaş Half Marathon Running · Antalya | October 24, 2026 | 20.7°C | 0% | 63 · Fair |
| Tarsus Half Marathon Running · Mersin | October 25, 2026 | 20.6°C | 0% | 63 · Fair |
| Antalya Canyon Ultra Trail Running · Antalya | November 14, 2026 | 16.6°C | 20% | 62 · Fair |
| İsmail Akçay Road Race Running · Balıkesir | September 6, 2026 | 23.2°C | 0% | 61 · Fair |
| Aydos Castle Trail Trail Running · İstanbul | October 4, 2026 | 21.1°C | 0% | 61 · Fair |
| Sinop SEV Half Marathon Running · Sinop | October 4, 2026 | 18.7°C | 40% | 61 · Fair |
| Ultimate Cunda Multisport · Ayvalik | September 19, 2026 | 23.0°C | 0% | 60 · Fair |
| Kaçkar by UTMB Ultra · Rize | September 11, 2026 – September 13, 2026 | 15.1°C | 60% | 60 · Fair |
| 91st Great Atatürk Run Running · Ankara | December 27, 2026 | 2.6°C | 40% | 59 · Fair |
| Kızılcahamam Eğrekkaya Ultra Trail Trail Running · Ankara | September 5, 2026 | 19.1°C | 0% | 58 · Fair |
| Kyzikos Ultra Trail Running · Erdek | October 10, 2026 – October 11, 2026 | 18.0°C | 20% | 58 · Fair |
| Bodrum Half Marathon Running · Bodrum | October 4, 2026 | 22.2°C | 0% | 57 · Fair |
| Ultra Abant Trail Running · Bolu | August 14, 2026 – August 15, 2026 | 19.7°C | 0% | 56 · Fair |
| 2026 Mudanya Triathlon Turkey Cup Final Triathlon · Mudanya | September 18, 2026 – September 20, 2026 | 22.3°C | 40% | 56 · Fair |
| Çanakkale Gran Fondo Cycling · Çanakkale | October 4, 2026 | 18.5°C | 20% | 56 · Fair |
| Eskişehir International Half Marathon (Eti Lifalif) Running · Eskisehir | August 16, 2026 | 22.9°C | 0% | 55 · Fair |
| 11th International Edirne Half Marathon Running · Edirne | September 6, 2026 | 22.7°C | 0% | 55 · Fair |
| Equality (Equinox) Run Running · Antalya | September 27, 2026 | 24.9°C | 0% | 55 · Fair |
| Gallipoli Marathon Running · Çanakkale | October 11, 2026 | 18.9°C | 20% | 54 · Fair |
| Fethiye Ultra Time-Limit Run Running · Muğla | October 31, 2026 | 19.0°C | 20% | 54 · Fair |
| Büyükşehir Kocaeli Ultra Ultra · Kocaeli | August 29, 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 |
| Kyrenia Half Marathon Running · Kyrenia | October 11, 2026 | 23.5°C | 0% | 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 |
| 39th Çanakkale Strait Swimming Race Open Water Swimming · Canakkale | August 30, 2026 | 26.0°C | 0% | 51 · Fair |
| Gran Fondo İzmir Cycling · İzmir | October 4, 2026 | 21.1°C | 0% | 51 · Fair |
| 38th Bosphorus Cross-Continental Swimming Race Open Water Swimming · Istanbul | August 23, 2026 | 25.1°C | 20% | 50 · Fair |
| Veloturk Gran Fondo Çeşme Cycling · Çeşme | October 24, 2026 – October 25, 2026 | 19.7°C | 20% | 50 · Fair |
| Davraz Sky Run Trail Running · Isparta | August 22, 2026 | 24.6°C | 0% | 49 · Tough |
| Muğla Victory Run Running · Mugla | August 30, 2026 | 24.5°C | 0% | 49 · Tough |
| Ayvalık Half Marathon Running · Ayvalik | September 13, 2026 | 24.0°C | 0% | 49 · Tough |
| AHULEX The Monument Race Ultra · Muğla | October 28, 2026 – November 2, 2026 | 20.4°C | 20% | 49 · Tough |
| Swimrun Turkey Multisport · İzmir | September 6, 2026 | 25.1°C | 20% | 48 · Tough |
| 14th International September 9 Izmir Half Marathon Running · İzmir | September 13, 2026 | 25.5°C | 0% | 46 · Tough |
| Izmir Liberation Orienteering Days Multisport · İzmir | September 3, 2026 – September 6, 2026 | 27.7°C | 0% | 45 · Tough |
| Yalova Gran Fondo Cycling · Yalova | September 12, 2026 | 21.6°C | 20% | 45 · Tough |
| Yeşilay Eurasia Intercontinental Night Half Marathon Running · Istanbul | August 23, 2026 | 25.6°C | 20% | 41 · Tough |
| Two Shores of the Aegean Friendship Run (Gömeç Atatürk Road Race) Running · Balikesir | August 23, 2026 | 29.0°C | 0% | 40 · Tough |
| Istanbul Ultra Trail Running · İstanbul | September 5, 2026 | 22.1°C | 40% | 39 · Tough |
| Gökova Run Fest Running · Akyaka | September 26, 2026 – September 27, 2026 | 24.9°C | 0% | 37 · Tough |
| Gran Fondo Başkent Cycling · Ankara | August 23, 2026 | 25.3°C | 0% | 36 · Tough |
| International Bosphorus Triathlon Triathlon · Istanbul | August 15, 2026 – August 16, 2026 | 24.3°C | 20% | 35 · Tough |
| Runfire Salt Lake Ultra Trail Trail Running · Aksaray | August 21, 2026 – August 23, 2026 | 26.1°C | 0% | 33 · 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.