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BOSTON MARATHON 2023

Myung Joon Kim

Bib: 23566•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M80+)
#0 / 3
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:40/mi
30:02
↑ 97↓ 3451.5%
10K· 6.21 mi
9:19/mi
58:58
↑ 79↓ 1380.4%
15K· 9.32 mi
9:26/mi
1:28:17
↑ 67↓ 78
20K· 12.43 mi
9:31/mi
1:57:52
↑ 106↓ 860.1%
Half· 13.11 mi
9:02/mi
2:04:02
↑ 19↓ 370.5%
25K· 15.53 mi
9:37/mi
2:27:22
↑ 66↓ 880.2%
30K· 18.64 mi
9:48/mi
2:57:49
↑ 181↓ 1480.2%
20M
9:30/mi
3:10:44
↑ 64↓ 500.2%
21M
10:22/mi
3:21:06
↑ 106↓ 241.6%
35K· 21.75 mi
9:09/mi
3:27:57
↑ 17↓ 861.7%
23M
10:01/mi
3:40:30
↑ 23↓ 630.6%
24M
9:44/mi
3:50:14
↓ 821.3%
40K· 24.85 mi
10:01/mi
3:58:48
↓ 200.3%
25.2M
10:52/mi
4:02:33
↑ 13↓ 160.2%
Finish· 26.22 mi
10:10/mi
4:12:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:02
Pace9:28 /mi
2nd Half
Distance13.11 mi
Time2:08:53
Pace9:50 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:4330:029:4030:02
9:40
-
10K
6.21 mi11:56:3958:589:2928:56
9:19
-0:21
15K
9.32 mi12:25:581:28:179:2829:19
9:26
+0:07
20K
12.43 mi12:55:331:57:529:2929:35
9:31
+0:05
Half
13.11 mi13:01:432:04:029:286:10
9:02
-0:29
25K
15.53 mi13:25:032:27:229:2923:20
9:37
+0:35
30K
18.64 mi13:55:302:57:499:3230:27
9:48
+0:11
20M
20.00 mi14:08:253:10:449:3212:55
9:30
-0:18
21M
21.00 mi14:18:473:21:069:3510:22
10:22
+0:52
35K
21.75 mi14:25:383:27:579:346:51
9:09
-1:13
23M
23.00 mi14:38:113:40:309:3512:33
10:01
+0:52
24M
24.00 mi14:47:553:50:149:369:44
9:44
-0:17
40K
24.85 mi14:56:293:58:489:368:34
10:01
+0:17
25.2M
25.20 mi15:00:144:02:339:383:45
10:52
+0:51
Finish
26.22 mi15:10:364:12:559:3910:22
10:10
-0:42

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

9:02 /mi

Average Pace

9:39 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:11:16

28% of race

Time at Steady Pace

2:16:03

54% of race

Time at Slower Pace

45:36

18% of race

Average Pace: 9:39 /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 mi11:27:4330:029:4030:02
9:40
#22556
10K
6.21 mi11:56:3958:589:2928:56
9:19
#22302
15K
9.32 mi12:25:581:28:179:2829:19
9:26
#22210
20K
12.43 mi12:55:331:57:529:2929:35
9:31
#22055
Half
13.11 mi13:01:432:04:029:286:10
9:02
#21978
25K
15.53 mi13:25:032:27:229:2923:20
9:37
#21853
30K
18.64 mi13:55:302:57:499:3230:27
9:48
#21592
20M
20.00 mi14:08:253:10:449:3212:55
9:30
#21407
21M
21.00 mi14:18:473:21:069:3510:22
10:22
#21273
35K
21.75 mi14:25:383:27:579:346:51
9:09
#21170
23M
23.00 mi14:38:113:40:309:3512:33
10:01
#21084
24M
24.00 mi14:47:553:50:149:369:44
9:44
#21023
40K
24.85 mi14:56:293:58:489:368:34
10:01
#20968
25.2M
25.20 mi15:00:144:02:339:383:45
10:52
#20951
Finish
26.22 mi15:10:364:12:559:3910:22
10:10
#21015
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM80+Seg. OverallSeg. MalesSeg. M80+
5K3.11 mi3.11 mi22556133711337122059(Top 83%)13217(Top 87%)13217(Top 440567%)
10K6.21 mi3.10 mi22302+25413280+9113280+9121970(Top 83%)13142(Top 87%)13142(Top 438067%)
15K9.32 mi3.11 mi22210+9213250+3013250+3022059(Top 83%)13217(Top 87%)13217(Top 440567%)
20K12.43 mi3.11 mi22055+15513169+8113169+8121618(Top 81%)13013(Top 86%)13013(Top 433767%)
Half13.11 mi0.68 mi21978+7713138+3113138+3120579(Top 77%)12551(Top 83%)12551(Top 418367%)
25K15.53 mi2.42 mi21853+12513089+4913089+4921195(Top 80%)12794(Top 84%)12794(Top 426467%)
30K18.64 mi3.11 mi21592+26112960+12912960+12920445(Top 77%)12403(Top 82%)12403(Top 413433%)
20M20.00 mi1.36 mi21407+18512868+9212868+9218875(Top 71%)11630(Top 77%)11630(Top 387667%)
21M21.00 mi1.00 mi21273+13412785+8312785+8319192(Top 72%)11720(Top 77%)11720(Top 390667%)
35K21.75 mi0.75 mi21170+10312734+5112734+5118564(Top 70%)11406(Top 75%)11406(Top 380200%)
23M23.00 mi1.25 mi21084+8612682+5212682+5220054(Top 75%)12047(Top 79%)12047(Top 401567%)
24M24.00 mi1.00 mi21023+6112648+3412648+3420001(Top 75%)12006(Top 79%)12006(Top 400200%)
40K24.85 mi0.85 mi20968+5512609+3912609+3920010(Top 75%)11924(Top 79%)11924(Top 397467%)
25.2M25.20 mi0.35 mi20951+1712597+1212597+1220145(Top 76%)11991(Top 79%)11991(Top 399700%)
Finish26.22 mi1.02 mi21015-6412610-1312610-1322211(Top 83%)12952(Top 85%)12952(Top 431733%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22059

Males

13217

M80+

13217

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

21970

Males

13142

M80+

13142

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22059

Males

13217

M80+

13217

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21618

Males

13013

M80+

13013

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20579

Males

12551

M80+

12551

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21195

Males

12794

M80+

12794

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20445

Males

12403

M80+

12403

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18875

Males

11630

M80+

11630

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

19192

Males

11720

M80+

11720

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

18564

Males

11406

M80+

11406

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

20054

Males

12047

M80+

12047

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

20001

Males

12006

M80+

12006

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

20010

Males

11924

M80+

11924

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20145

Males

11991

M80+

11991

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

22211

Males

12952

M80+

12952

Passing Analysis

Category:
Athletes Passed
2082
Passed By
541
Net Change
+1541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22556
5K → 10K391137+254#22556#22302
10K → 15K208116+92#22302#22210
15K → 20K21661+155#22210#22055
20K → Half803+77#22055#21978
Half → 25K16742+125#21978#21853
25K → 30K28423+261#21853#21592
30K → 20M1905+185#21592#21407
20M → 21M1439+134#21407#21273
21M → 35K1052+103#21273#21170
35K → 23M10418+86#21170#21084
23M → 24M7514+61#21084#21023
24M → 40K6611+55#21023#20968
40K → 25.2M3114+17#20968#20951
25.2M → Finish2286-64#20951#21015
TOTALS2082541+1541
📊

Passing Visuals

Category:
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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