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BOSTON MARATHON 2023

Kang Won Lee

Bib: 22419•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 (M65-69)
#0 / 549
Top 35%
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
8:47/mi
27:17
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
54:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:45/mi
1:21:22
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:48:41
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:54:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:49/mi
2:15:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:03/mi
2:44:06
↑ 181↓ 1480.2%
20M
9:10/mi
2:56:33
↑ 64↓ 500.2%
21M
9:32/mi
3:06:05
↑ 106↓ 241.6%
35K· 21.75 mi
10:28/mi
3:13:55
↑ 17↓ 861.7%
23M
9:29/mi
3:25:47
↑ 23↓ 630.6%
24M
8:48/mi
3:34:35
↓ 821.3%
40K· 24.85 mi
9:11/mi
3:42:26
↓ 200.3%
25.2M
9:40/mi
3:45:46
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
3:54:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:37
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time2:00:15
Pace9:10 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:0927:178:4727:17
8:47
-
10K
6.21 mi12:13:0254:108:4326:53
8:39
-0:08
15K
9.32 mi12:40:141:21:228:4427:12
8:45
+0:06
20K
12.43 mi13:07:331:48:418:4527:19
8:48
+0:03
Half
13.11 mi13:13:291:54:378:455:56
8:42
-0:06
25K
15.53 mi13:34:512:15:598:4521:22
8:49
+0:07
30K
18.64 mi14:02:582:44:068:4828:07
9:03
+0:14
20M
20.00 mi14:15:252:56:338:5012:27
9:10
+0:07
21M
21.00 mi14:24:573:06:058:529:32
9:32
+0:22
35K
21.75 mi14:32:473:13:558:557:50
10:28
+0:56
23M
23.00 mi14:44:393:25:478:5711:52
9:29
-0:59
24M
24.00 mi14:53:273:34:358:568:48
8:48
-0:41
40K
24.85 mi15:01:183:42:268:577:51
9:11
+0:23
25.2M
25.20 mi15:04:383:45:468:583:20
9:40
+0:29
Finish
26.22 mi15:13:443:54:528:589:06
8:56
-0:44

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

8:39 /mi

Average Pace

8:58 /mi

Slowest Pace

10:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:53

11% of race

Time at Steady Pace

2:47:34

71% of race

Time at Slower Pace

40:25

17% of race

Average Pace: 8:57 /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 mi11:46:0927:178:4727:17
8:47
#19354
10K
6.21 mi12:13:0254:108:4326:53
8:39
#19208
15K
9.32 mi12:40:141:21:228:4427:12
8:45
#19206
20K
12.43 mi13:07:331:48:418:4527:19
8:48
#19041
Half
13.11 mi13:13:291:54:378:455:56
8:42
#19042
25K
15.53 mi13:34:512:15:598:4521:22
8:49
#18864
30K
18.64 mi14:02:582:44:068:4828:07
9:03
#18603
20M
20.00 mi14:15:252:56:338:5012:27
9:10
#18479
21M
21.00 mi14:24:573:06:058:529:32
9:32
#18342
35K
21.75 mi14:32:473:13:558:557:50
10:28
#18577
23M
23.00 mi14:44:393:25:478:5711:52
9:29
#18560
24M
24.00 mi14:53:273:34:358:568:48
8:48
#18450
40K
24.85 mi15:01:183:42:268:577:51
9:11
#18395
25.2M
25.20 mi15:04:383:45:468:583:20
9:40
#18363
Finish
26.22 mi15:13:443:54:528:589:06
8:56
#18345
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi19354119211192119253(Top 72%)11987(Top 79%)11987(Top 2183%)
10K6.21 mi3.10 mi19208+14611903+1811903+1819137(Top 72%)11952(Top 79%)11952(Top 2177%)
15K9.32 mi3.11 mi19206+211932-2911932-2919253(Top 72%)11987(Top 79%)11987(Top 2183%)
20K12.43 mi3.11 mi19041+16511876+5611876+5618618(Top 70%)11735(Top 77%)11735(Top 2138%)
Half13.11 mi0.68 mi19042-111874+211874+218878(Top 71%)11843(Top 78%)11843(Top 2157%)
25K15.53 mi2.42 mi18864+17811799+7511799+7518019(Top 68%)11440(Top 75%)11440(Top 2084%)
30K18.64 mi3.11 mi18603+26111657+14211657+14217434(Top 65%)11098(Top 73%)11098(Top 2021%)
20M20.00 mi1.36 mi18479+12411604+5311604+5317360(Top 65%)10975(Top 72%)10975(Top 1999%)
21M21.00 mi1.00 mi18342+13711529+7511529+7516112(Top 61%)10409(Top 69%)10409(Top 1896%)
35K21.75 mi0.75 mi18577-23511633-10411633-10422311(Top 84%)13063(Top 86%)13063(Top 2379%)
23M23.00 mi1.25 mi18560+1711612+2111612+2118246(Top 69%)11230(Top 74%)11230(Top 2046%)
24M24.00 mi1.00 mi18450+11011550+6211550+6216183(Top 61%)10261(Top 68%)10261(Top 1869%)
40K24.85 mi0.85 mi18395+5511511+3911511+3917003(Top 64%)10586(Top 70%)10586(Top 1928%)
25.2M25.20 mi0.35 mi18363+3211494+1711494+1715935(Top 60%)10099(Top 67%)10099(Top 1840%)
Finish26.22 mi1.02 mi18345+1811477+1711477+1717610(Top 66%)10881(Top 72%)10881(Top 1982%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19253

Males

11987

M65-69

11987

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

19137

Males

11952

M65-69

11952

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19253

Males

11987

M65-69

11987

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

18618

Males

11735

M65-69

11735

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18878

Males

11843

M65-69

11843

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18019

Males

11440

M65-69

11440

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17434

Males

11098

M65-69

11098

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17360

Males

10975

M65-69

10975

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16112

Males

10409

M65-69

10409

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

22311

Males

13063

M65-69

13063

35K→23M

21.8 - 23.0 mi

Top 69%
×5story building
+23ft-63ft

Overall

18246

Males

11230

M65-69

11230

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16183

Males

10261

M65-69

10261

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

17003

Males

10586

M65-69

10586

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15935

Males

10099

M65-69

10099

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17610

Males

10881

M65-69

10881

Passing Analysis

Category:
Athletes Passed
2101
Passed By
1092
Net Change
+1009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19354
5K → 10K416270+146#19354#19208
10K → 15K179177+2#19208#19206
15K → 20K25186+165#19206#19041
20K → Half2627-1#19041#19042
Half → 25K20931+178#19042#18864
25K → 30K31150+261#18864#18603
30K → 20M15834+124#18603#18479
20M → 21M15922+137#18479#18342
21M → 35K13248-235#18342#18577
35K → 23M8568+17#18577#18560
23M → 24M1188+110#18560#18450
24M → 40K8025+55#18450#18395
40K → 25.2M353+32#18395#18363
25.2M → Finish6143+18#18363#18345
TOTALS21011092+1009
📊

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