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BOSTON MARATHON 2023

Che Koog Yoo

Bib: 13863•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 24%
Gender (Male)
#0 / 15176
Top 38%
Masters (Masters Men)
#0 / 9891
Top 24%
Division (M50-54)
#0 / 2052
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:54
Rank: #11358
Start → 5K
23:54 | 7:42/mi
10K· 6.21 mi
45:35
Rank: #8683 (+2675)
5K → 10K
21:41 | 6:59/mi
15K· 9.32 mi
1:07:23
Rank: #7973 (+710)
10K → 15K
21:48 | 7:01/mi
20K· 12.43 mi
1:29:31
Rank: #7566 (+407)
15K → 20K
22:08 | 7:07/mi
Half· 13.11 mi
1:34:16
Rank: #7483 (+83)
20K → Half
4:45 | 6:58/mi
25K· 15.53 mi
1:51:15
Rank: #7134 (+349)
Half → 25K
16:59 | 7:00/mi
30K· 18.64 mi
2:13:17
Rank: #6685 (+449)
25K → 30K
22:02 | 7:06/mi
20M
2:23:05
Rank: #6539 (+146)
30K → 20M
9:48 | 7:13/mi
21M
2:30:50
Rank: #6473 (+66)
20M → 21M
7:45 | 7:45/mi
35K· 21.75 mi
2:36:07
Rank: #6416 (+57)
21M → 35K
5:17 | 7:04/mi
23M
2:45:30
Rank: #6375 (+41)
35K → 23M
9:23 | 7:30/mi
24M
2:52:45
Rank: #6308 (+67)
23M → 24M
7:15 | 7:15/mi
40K· 24.85 mi
2:59:21
Rank: #6328 (-20)
24M → 40K
6:36 | 7:43/mi
25.2M
3:02:12
Rank: #6341 (-13)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:10:07
Rank: #6444 (-103)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:16
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:35:51
Pace7:19 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1123:547:4223:54
7:42
-
10K
6.21 mi11:38:5245:357:2021:41
6:59
-0:43
15K
9.32 mi12:00:401:07:237:1421:48
7:01
+0:02
20K
12.43 mi12:22:481:29:317:1222:08
7:07
+0:06
Half
13.11 mi12:27:331:34:167:114:45
6:58
-0:09
25K
15.53 mi12:44:321:51:157:1016:59
7:00
+0:02
30K
18.64 mi13:06:342:13:177:0922:02
7:06
+0:06
20M
20.00 mi13:16:222:23:057:099:48
7:13
+0:07
21M
21.00 mi13:24:072:30:507:117:45
7:45
+0:32
35K
21.75 mi13:29:242:36:077:115:17
7:04
-0:41
23M
23.00 mi13:38:472:45:307:129:23
7:30
+0:26
24M
24.00 mi13:46:022:52:457:127:15
7:15
-0:15
40K
24.85 mi13:52:382:59:217:136:36
7:43
+0:28
25.2M
25.20 mi13:55:293:02:127:142:51
8:16
+0:33
Finish
26.22 mi14:03:243:10:077:157:55
7:46
-0:30

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:58 /mi

Average Pace

7:15 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:06

74% of race

Time at Steady Pace

46:10

24% of race

Time at Slower Pace

2:51

1% of race

Average Pace: 7:15 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:17:1123:547:4223:54
7:42
#11358
10K
6.21 mi11:38:5245:357:2021:41
6:59
#8683
15K
9.32 mi12:00:401:07:237:1421:48
7:01
#7973
20K
12.43 mi12:22:481:29:317:1222:08
7:07
#7566
Half
13.11 mi12:27:331:34:167:114:45
6:58
#7483
25K
15.53 mi12:44:321:51:157:1016:59
7:00
#7134
30K
18.64 mi13:06:342:13:177:0922:02
7:06
#6685
20M
20.00 mi13:16:222:23:057:099:48
7:13
#6539
21M
21.00 mi13:24:072:30:507:117:45
7:45
#6473
35K
21.75 mi13:29:242:36:077:115:17
7:04
#6416
23M
23.00 mi13:38:472:45:307:129:23
7:30
#6375
24M
24.00 mi13:46:022:52:457:127:15
7:15
#6308
40K
24.85 mi13:52:382:59:217:136:36
7:43
#6328
25.2M
25.20 mi13:55:293:02:127:142:51
8:16
#6341
Finish
26.22 mi14:03:243:10:077:157:55
7:46
#6444
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi11358882288226651(Top 25%)5975(Top 39%)5975(Top 291%)
10K6.21 mi3.10 mi8683+26757386+14367386+14366675(Top 25%)5992(Top 39%)5992(Top 292%)
15K9.32 mi3.11 mi7973+7106937+4496937+4496651(Top 25%)5975(Top 39%)5975(Top 291%)
20K12.43 mi3.11 mi7566+4076649+2886649+2886668(Top 25%)5961(Top 39%)5961(Top 290%)
Half13.11 mi0.68 mi7483+836593+566593+566336(Top 24%)5746(Top 38%)5746(Top 280%)
25K15.53 mi2.42 mi7134+3496330+2636330+2635605(Top 21%)5151(Top 34%)5151(Top 251%)
30K18.64 mi3.11 mi6685+4495977+3535977+3534898(Top 18%)4510(Top 30%)4510(Top 220%)
20M20.00 mi1.36 mi6539+1465858+1195858+1195179(Top 19%)4686(Top 31%)4686(Top 228%)
21M21.00 mi1.00 mi6473+665792+665792+665902(Top 22%)5129(Top 34%)5129(Top 250%)
35K21.75 mi0.75 mi6416+575749+435749+435690(Top 21%)5021(Top 33%)5021(Top 245%)
23M23.00 mi1.25 mi6375+415707+425707+426372(Top 24%)5422(Top 36%)5422(Top 264%)
24M24.00 mi1.00 mi6308+675645+625645+626030(Top 23%)5128(Top 34%)5128(Top 250%)
40K24.85 mi0.85 mi6328-205649-45649-48055(Top 30%)6274(Top 41%)6274(Top 306%)
25.2M25.20 mi0.35 mi6341-135655-65655-67973(Top 30%)6133(Top 40%)6133(Top 299%)
Finish26.22 mi1.02 mi6444-1035711-565711-5610400(Top 39%)7484(Top 49%)7484(Top 365%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6651

Males

5975

M50-54

5975

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

6675

Males

5992

M50-54

5992

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6651

Males

5975

M50-54

5975

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6668

Males

5961

M50-54

5961

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6336

Males

5746

M50-54

5746

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5605

Males

5151

M50-54

5151

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4898

Males

4510

M50-54

4510

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5179

Males

4686

M50-54

4686

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

5902

Males

5129

M50-54

5129

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5690

Males

5021

M50-54

5021

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6372

Males

5422

M50-54

5422

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6030

Males

5128

M50-54

5128

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8055

Males

6274

M50-54

6274

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7973

Males

6133

M50-54

6133

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

10400

Males

7484

M50-54

7484

Passing Analysis

Category:
Athletes Passed
5262*
Passed By
348
Net Change
+4914
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11358
5K → 10K2679*4+2675#11358#8683
10K → 15K7133+710#8683#7973
15K → 20K4147+407#7973#7566
20K → Half863+83#7566#7483
Half → 25K3501+349#7483#7134
25K → 30K4523+449#7134#6685
30K → 20M1515+146#6685#6539
20M → 21M9529+66#6539#6473
21M → 35K6710+57#6473#6416
35K → 23M8140+41#6416#6375
23M → 24M9326+67#6375#6308
24M → 40K4565-20#6308#6328
40K → 25.2M1629-13#6328#6341
25.2M → Finish20123-103#6341#6444
TOTALS5262*348+4914

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing