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BOSTON MARATHON 2023

Michael Kim

CA

Bib: 2692 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M45-49)
#0 / 2252
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:46/mi
21:00
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:45/mi
41:58
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:46/mi
1:02:58
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:49/mi
1:24:09
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:49/mi
1:28:48
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:47/mi
1:45:16
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:51/mi
2:06:33
↑ 181↓ 1480.2%
138 ft elev
20M
6:47/mi
2:15:46
↑ 64↓ 500.2%
148 ft elev
21M
7:03/mi
2:22:49
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:40/mi
2:27:48
↑ 17↓ 861.7%
156 ft elev
23M
6:51/mi
2:36:23
↑ 23↓ 630.6%
116 ft elev
24M
6:41/mi
2:43:04
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:39/mi
2:48:45
↓ 200.3%
20 ft elev
25.2M
7:03/mi
2:51:11
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:26/mi
2:57:44
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:28:486:46 /mi⚖️ balanced
2nd Half
1:28:566:47 /mi⚖️ balanced
Even split — consistent pacing between halves
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
21:006:463.11 mi21:00
6:46
-
10K
41:586:453.10 mi20:58
6:45
-0:01
15K
1:02:586:453.11 mi21:00
6:46
+0:01
20K
1:24:096:463.11 mi21:11
6:49
+0:03
Half(13.11 mi)
1:28:486:460.68 mi4:39
6:49
0:00
25K
1:45:166:472.42 mi16:28
6:47
-0:02
30K
2:06:336:473.11 mi21:17
6:51
+0:04
20M
2:15:466:471.36 mi9:13
6:47
-0:04
21M
2:22:496:481.00 mi7:03
7:03
+0:16
35K
2:27:486:480.75 mi4:59
6:40
-0:23
23M
2:36:236:481.25 mi8:35
6:51
+0:11
24M
2:43:046:481.00 mi6:41
6:41
-0:10
40K
2:48:456:470.85 mi5:41
6:39
-0:02
25.2M
2:51:116:480.35 mi2:26
7:03
+0:24
Finish(26.22 mi)
2:57:446:471.02 mi6:33
6:26
-0:37
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:26 /mi

Average Pace

6:47 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

44:52

25% of race

Time at Steady Pace

2:12:52

75% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:47 /mi

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

Heatmap

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

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi423339623962468543704370
10K3.10 mi4519-2864222-2604222-260479044474447
15K3.11 mi4556-374255-334255-33468543704370
20K3.11 mi4560-44258-34258-3458042654265
Half(13.11 mi)0.68 mi4591-314282-244282-24529748804880
25K2.42 mi4465+1264177+1054177+105405538013801
30K3.11 mi4203+2623946+2313946+231331531233123
20M1.36 mi4039+1643797+1493797+149272325772577
21M1.00 mi3868+1713641+1563641+156240522742274
35K0.75 mi3836+323609+323609+32334131113111
23M1.25 mi3745+913528+813528+81296827692769
24M1.00 mi3666+793456+723456+72301628002800
40K0.85 mi3555+1113356+1003356+100211819821982
25.2M0.35 mi3503+523307+493307+49196018431843
Finish(26.22 mi)1.02 mi3404+993208+993208+99215019951995

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21story building
+97ft-345ft

Overall

4685

Males

4370

M45-49

4370

5K→10K

3.1 - 6.2 mi

Top 18%
×5story building
+79ft-138ft

Overall

4790

Males

4447

M45-49

4447

10K→15K

6.2 - 9.3 mi

Top 18%
×3story building
+67ft-78ft

Overall

4685

Males

4370

M45-49

4370

15K→20K

9.3 - 12.4 mi

Top 17%
×5story building
+106ft-86ft

Overall

4580

Males

4265

M45-49

4265

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5297

Males

4880

M45-49

4880

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4055

Males

3801

M45-49

3801

25K→30K

15.5 - 18.6 mi

Top 12%
×9story building
+181ft-148ft

Overall

3315

Males

3123

M45-49

3123

30K→20M

18.6 - 20.0 mi

Top 10%
×5story building
+64ft-50ft

Overall

2723

Males

2577

M45-49

2577

20M→21M

20.0 - 21.0 mi

Top 9%
×8story building
+106ft-24ft

Overall

2405

Males

2274

M45-49

2274

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3341

Males

3111

M45-49

3111

35K→23M

21.8 - 23.0 mi

Top 11%
×5story building
+23ft-63ft

Overall

2968

Males

2769

M45-49

2769

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3016

Males

2800

M45-49

2800

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2118

Males

1982

M45-49

1982

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1960

Males

1843

M45-49

1843

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2story building
+22ft-21ft

Overall

2150

Males

1995

M45-49

1995

Passing Analysis

Category:
Passed
1620
Passed By
791
Net Change
+829
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4233
5K → 10K110396-286#4233#4519
10K → 15K105142-37#4519#4556
15K → 20K96100-4#4556#4560
20K → Half1041-31#4560#4591
Half → 25K15125+126#4591#4465
25K → 30K27412+262#4465#4203
30K → 20M1662+164#4203#4039
20M → 21M18110+171#4039#3868
21M → 35K4513+32#3868#3836
35K → 23M10817+91#3836#3745
23M → 24M9516+79#3745#3666
24M → 40K1154+111#3666#3555
40K → 25.2M531+52#3555#3503
25.2M → Finish11112+99#3503#3404
TOTALS1620791+829

Passing Charts

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