The sun's warmth can easily take you out of your comfort zone. Most runners can do without the heat during their training sessions. Brett Carlson and Brian Torres prefer to run early in the morning, or late in the evening.
"Just kind of avoid that sun beaming down because part of the run that we do is on the back of the trail, and there's like no shade back there, so it kind of gets too hot when the sun's high," said Torres.
"Hydration is definitely the biggest thing, especially when it warms up," said Carlson. "It's not impossible to run in that kind of weather. I mean, you'll sweat, you'll cool down, you'll feel alright."
On Sunday, the California Classic Half-Marathon will take runners through Downtown Fresno as well as the Chaffee Zoo. The event was actually moved from May to March so runners could have cooler conditions, but we're expected to hit 85 on Sunday.
"Last couple of years it's been pretty warm," said Aaron Samansky with Sierra Running Company. "This year the weather is not cooperating. It's still going to be warm but that doesn't mean that it's not going to be a great time."
Sierra Running Company is one of the race sponsors. The event gets going at 7 a.m., so the heat won't be too bad, but runners still need to prepare themselves.
"These next couple of days are going to be very important for hydration," said Samansky. "So you want to make sure you're taking in plenty of water and plenty of electrolyte drink; that way you can balance out the salts, and electrolytes, and magnesium, and things that your body's going to lose."
And for quick energy, some runners will consume gel products during the race.
Because of the race on Sunday morning, several streets will be closed between 6:30 a.m. and 11 a.m. in Downtown Fresno, the Tower District and near Roeding Park.