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BOSTON MARATHON 2023

Christopher Kim

Bib: 11717•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 45%
Masters (Masters Men)
#0 / 9891
Top 33%
Division (M45-49)
#0 / 2252
Top 44%
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
7:19/mi
22:44
↑ 97↓ 3451.5%
10K· 6.21 mi
6:59/mi
44:26
↑ 79↓ 1380.4%
15K· 9.32 mi
7:15/mi
1:06:56
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:30:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:35:43
↑ 19↓ 370.5%
25K· 15.53 mi
7:42/mi
1:54:22
↑ 66↓ 880.2%
30K· 18.64 mi
7:40/mi
2:18:10
↑ 181↓ 1480.2%
20M
7:36/mi
2:28:29
↑ 64↓ 500.2%
21M
8:02/mi
2:36:31
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:42:02
↑ 17↓ 861.7%
23M
7:38/mi
2:51:35
↑ 23↓ 630.6%
24M
7:44/mi
2:59:19
↓ 821.3%
40K· 24.85 mi
7:56/mi
3:06:06
↓ 200.3%
25.2M
8:30/mi
3:09:02
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:16:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:43
Pace7:18 /mi
2nd Half
Distance13.11 mi
Time1:41:05
Pace7:43 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4222:447:1922:44
7:19
-
10K
6.21 mi11:11:2444:267:0921:42
6:59
-0:20
15K
9.32 mi11:33:541:06:567:1122:30
7:15
+0:16
20K
12.43 mi11:57:381:30:407:1823:44
7:38
+0:23
Half
13.11 mi12:02:411:35:437:185:03
7:24
-0:14
25K
15.53 mi12:21:201:54:227:2218:39
7:42
+0:18
30K
18.64 mi12:45:082:18:107:2523:48
7:40
-0:02
20M
20.00 mi12:55:272:28:297:2510:19
7:36
-0:04
21M
21.00 mi13:03:292:36:317:278:02
8:02
+0:26
35K
21.75 mi13:09:002:42:027:275:31
7:22
-0:40
23M
23.00 mi13:18:332:51:357:289:33
7:38
+0:16
24M
24.00 mi13:26:172:59:197:287:44
7:44
+0:06
40K
24.85 mi13:33:043:06:067:296:47
7:56
+0:12
25.2M
25.20 mi13:36:003:09:027:302:56
8:30
+0:34
Finish
26.22 mi13:43:463:16:487:317:46
7:37
-0:53

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

6:59 /mi

Average Pace

7:31 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:30

39% of race

Time at Steady Pace

1:41:33

52% of race

Time at Slower Pace

17:45

9% of race

Average Pace: 7:30 /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 mi10:49:4222:447:1922:44
7:19
#8208
10K
6.21 mi11:11:2444:267:0921:42
6:59
#7433
15K
9.32 mi11:33:541:06:567:1122:30
7:15
#7617
20K
12.43 mi11:57:381:30:407:1823:44
7:38
#8213
Half
13.11 mi12:02:411:35:437:185:03
7:24
#8265
25K
15.53 mi12:21:201:54:227:2218:39
7:42
#8527
30K
18.64 mi12:45:082:18:107:2523:48
7:40
#8447
20M
20.00 mi12:55:272:28:297:2510:19
7:36
#8343
21M
21.00 mi13:03:292:36:317:278:02
8:02
#8291
35K
21.75 mi13:09:002:42:027:275:31
7:22
#8251
23M
23.00 mi13:18:332:51:357:289:33
7:38
#8151
24M
24.00 mi13:26:172:59:197:287:44
7:44
#8172
40K
24.85 mi13:33:043:06:067:296:47
7:56
#8216
25.2M
25.20 mi13:36:003:09:027:302:56
8:30
#8222
Finish
26.22 mi13:43:463:16:487:317:46
7:37
#8231
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8208711271128093(Top 30%)6980(Top 46%)6980(Top 310%)
10K6.21 mi3.10 mi7433+7756586+5266586+5266724(Top 25%)6036(Top 40%)6036(Top 268%)
15K9.32 mi3.11 mi7617-1846703-1176703-1178093(Top 30%)6980(Top 46%)6980(Top 310%)
20K12.43 mi3.11 mi8213-5967081-3787081-37810389(Top 39%)8278(Top 55%)8278(Top 368%)
Half13.11 mi0.68 mi8265-527108-277108-279363(Top 35%)7713(Top 51%)7713(Top 342%)
25K15.53 mi2.42 mi8527-2627245-1377245-13710216(Top 38%)8105(Top 53%)8105(Top 360%)
30K18.64 mi3.11 mi8447+807155+907155+908357(Top 31%)6898(Top 45%)6898(Top 306%)
20M20.00 mi1.36 mi8343+1047062+937062+937435(Top 28%)6240(Top 41%)6240(Top 277%)
21M21.00 mi1.00 mi8291+527024+387024+387542(Top 28%)6210(Top 41%)6210(Top 276%)
35K21.75 mi0.75 mi8251+406984+406984+407626(Top 29%)6268(Top 41%)6268(Top 278%)
23M23.00 mi1.25 mi8151+1006900+846900+847257(Top 27%)5984(Top 39%)5984(Top 266%)
24M24.00 mi1.00 mi8172-216895+56895+59269(Top 35%)7021(Top 46%)7021(Top 312%)
40K24.85 mi0.85 mi8216-446899-46899-49552(Top 36%)7099(Top 47%)7099(Top 315%)
25.2M25.20 mi0.35 mi8222-66891+86891+89475(Top 36%)7001(Top 46%)7001(Top 311%)
Finish26.22 mi1.02 mi8231-96877+146877+149384(Top 35%)6953(Top 46%)6953(Top 309%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8093

Males

6980

M45-49

6980

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

6724

Males

6036

M45-49

6036

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8093

Males

6980

M45-49

6980

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10389

Males

8278

M45-49

8278

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9363

Males

7713

M45-49

7713

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10216

Males

8105

M45-49

8105

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8357

Males

6898

M45-49

6898

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7435

Males

6240

M45-49

6240

20M→21M

20.0 - 21.0 mi

Top 28%
×8story building
+106ft-24ft

Overall

7542

Males

6210

M45-49

6210

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7626

Males

6268

M45-49

6268

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7257

Males

5984

M45-49

5984

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9269

Males

7021

M45-49

7021

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9552

Males

7099

M45-49

7099

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9475

Males

7001

M45-49

7001

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

9384

Males

6953

M45-49

6953

Passing Analysis

Category:
Athletes Passed
1753
Passed By
1776
Net Change
-23
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8208
5K → 10K80530+775#8208#7433
10K → 15K68252-184#7433#7617
15K → 20K18614-596#7617#8213
20K → Half860-52#8213#8265
Half → 25K50312-262#8265#8527
25K → 30K203123+80#8527#8447
30K → 20M13026+104#8447#8343
20M → 21M9644+52#8343#8291
21M → 35K6222+40#8291#8251
35K → 23M12727+100#8251#8151
23M → 24M5879-21#8151#8172
24M → 40K5498-44#8172#8216
40K → 25.2M2026-6#8216#8222
25.2M → Finish5463-9#8222#8231
TOTALS17531776-23
📊

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