His eight-day problem will see him cycle through cities, cities and villages earlier than crossing the end line in Edinburgh on Red Nose Day on March 20.
His route consists of travelling through the outskirts of Ross-on-Wye through the A49 after which persevering with onto the A449, going through Ledbury later immediately.
The presenter began his problem on the South Coast on March 13 on a ride that may take him through England and Wales.
He will spend at the very least eight hours a day using the tandem, largely alone.
James will probably be joined on the best way by different presenters, in addition to some particular company.
This journey marks his third problem for Comic Relief, after beforehand proclaiming he would by no means do one once more.
In 2016, he accomplished 5 triathlons in 5 days, and in 2018, he carried out Pedal To The Peaks, by which he cycled between and climbed Scafell Pike, Snowdon, and Ben Nevis.
James stated in an announcement: “Well, right here I’m once more – I actually thought I’d by no means be so foolish to say sure to Comic Relief once more, however why not make it a hat-trick.
“Seriously although, the world feels actually overwhelming in the intervening time. There’s plenty of issues to fret about and every thing is simply feeling lots, so now could be the suitable time to return out of problem retirement and do my bit to assist.
“Cycling 1,000km in eight days will probably be brutally onerous and relentlessly demanding, however that’s precisely the purpose.
“I’m dedicating this challenge to anyone who feels like they’re carrying life’s load on their own.”
Radio 1’s Longest Ride with Greg James for Red Nose Day will probably be broadcast dwell throughout Radio 1, Morning Live and BBC Sounds throughout his journey.