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The original was posted on /r/geochallenges by /u/A__European on 2023-09-19 21:04:57.


Challenge link:

The map: US State Highways

Deadline: September 26, 7 pm UTC (12 pm noon PDT, 3 pm EDT, 9 pm CEST).

You are facing a U.S. state route sign. Do you recognize the state without moving? How fast can you find the route number on the map? You have just one minute! Good luck and have fun! :-)

Please post your score of the challenge as comment in this thread if you want to have it counted for the leaderboard (every posted score counts!).


Here are the results for challenge #80. Congrats to gobluetwo, LunacyEcho, and rtlewis123 for winning the challenge with a perfect score!

Rank Reddit Name Result Percentage Points
1st gobluetwo 25000 100.00 100
1st LunacyEcho 25000 100.00 100
1st rtlewis123 25000 100.00 100
4th solarsensei 24992 99.97 99
5th fbrasseur 24940 99.76 99
6th bdm6985 24409 97.64 97
7th rumilb 21325 85.30 85

Total standings of season 3:

Rank Reddit Name Points
1st bdm6985 1086
2nd rumilb 1048
3rd solarsensei 1025
4th rtlewis123 970
5th fbrasseur 817
6th gobluetwo 590
7th saladpants77 569
8th kuhl_kuhl 455
9th LunacyEcho 100
10th *Rooster* 96
11th sigusr3 91
12th SirRedDiamond 90

Hall of Fame

Season 1st 🥇 2nd 🥈 3rd 🥉
1 bdm6985 saladpants77 solarsensei
2 bdm6985 solarsensei fbrasseur

Last Challenge:

R1: State outline of South Dakota. We had siblings of SD-1804 in previous challenges (ND-1806 and SD-1806). SD-1804 runs in several chunks along the Missouri River. It continues as ND-1804 in North Dakota. ND-1806 and SD-1806 run on the other side of the river. The road numbers are references to the “Lewis and Clark Expedition” that took place between 1804 and 1806. 11 perfect scores. :-)

R2: Oregon. We had a distance sign to Mt. Hood and a shop sign that said “Mt. Hood Country Store”. “Mt. Hood National Forest” shows up at a decent zoom level when you zoom into the map. Mt. Hood and the town with the same name show up when you zoom one level further into the map. 13 perfect scores. :-)

R3: State outline of Florida. We were on US 98 along the ocean routhly in east/west direction. We were at the coast of the Florida Panhandle. Probably, this was already enough information to find the intersection. Florida uses the same numbering system as the US highways (odd numbered highways are running north to south with increasing numbers from east to west). This might also have helped to find the location. 16 perfect scores. :-)

R4: Rhode Island. It’s a small state and most state highways are easy to find on the map. 16 perfect scores. :-)

R5: Minnesota. We had not just one but two Canadian flags in this round. ;-) This suggested that we were close to the Canadian border. The name of the town was visible on the Liquor store behind us. 14 perfect scores. :-)