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BOSTON MARATHON 2023

Peter Kim

Bib: 19591•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 (M55-59)
#0 / 1422
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
8:38/mi
26:49
↑ 97↓ 3451.5%
10K· 6.21 mi
8:26/mi
53:00
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:19:29
↑ 67↓ 78
20K· 12.43 mi
8:58/mi
1:47:21
↑ 106↓ 860.1%
Half· 13.11 mi
9:30/mi
1:53:50
↑ 19↓ 370.5%
25K· 15.53 mi
8:57/mi
2:15:32
↑ 66↓ 880.2%
30K· 18.64 mi
9:40/mi
2:45:33
↑ 181↓ 1480.2%
20M
9:28/mi
2:58:25
↑ 64↓ 500.2%
21M
10:04/mi
3:08:29
↑ 106↓ 241.6%
35K· 21.75 mi
10:10/mi
3:16:05
↑ 17↓ 861.7%
23M
9:21/mi
3:27:48
↑ 23↓ 630.6%
24M
9:20/mi
3:37:08
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:44:48
↓ 200.3%
25.2M
9:52/mi
3:48:12
↑ 13↓ 160.2%
Finish· 26.22 mi
8:46/mi
3:57:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:50
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:03:18
Pace9:24 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2926:498:3826:49
8:38
-
10K
6.21 mi11:44:4053:008:3226:11
8:26
-0:12
15K
9.32 mi12:11:091:19:298:3226:29
8:31
+0:05
20K
12.43 mi12:39:011:47:218:3827:52
8:58
+0:27
Half
13.11 mi12:45:301:53:508:416:29
9:30
+0:32
25K
15.53 mi13:07:122:15:328:4321:42
8:57
-0:33
30K
18.64 mi13:37:132:45:338:5330:01
9:40
+0:43
20M
20.00 mi13:50:052:58:258:5512:52
9:28
-0:12
21M
21.00 mi14:00:093:08:298:5910:04
10:04
+0:36
35K
21.75 mi14:07:453:16:059:017:36
10:10
+0:06
23M
23.00 mi14:19:283:27:489:0211:43
9:21
-0:49
24M
24.00 mi14:28:483:37:089:039:20
9:20
-0:01
40K
24.85 mi14:36:283:44:489:037:40
8:58
-0:22
25.2M
25.20 mi14:39:523:48:129:033:24
9:52
+0:54
Finish
26.22 mi14:48:483:57:089:038:56
8:46
-1:06

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

8:26 /mi

Average Pace

9:03 /mi

Slowest Pace

10:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:25:39

61% of race

Time at Steady Pace

40:24

17% of race

Time at Slower Pace

51:05

22% of race

Average Pace: 9:03 /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 mi11:18:2926:498:3826:49
8:38
#18421
10K
6.21 mi11:44:4053:008:3226:11
8:26
#18084
15K
9.32 mi12:11:091:19:298:3226:29
8:31
#18032
20K
12.43 mi12:39:011:47:218:3827:52
8:58
#18438
Half
13.11 mi12:45:301:53:508:416:29
9:30
#18711
25K
15.53 mi13:07:122:15:328:4321:42
8:57
#18706
30K
18.64 mi13:37:132:45:338:5330:01
9:40
#19006
20M
20.00 mi13:50:052:58:258:5512:52
9:28
#18976
21M
21.00 mi14:00:093:08:298:5910:04
10:04
#18943
35K
21.75 mi14:07:453:16:059:017:36
10:10
#19088
23M
23.00 mi14:19:283:27:489:0211:43
9:21
#19001
24M
24.00 mi14:28:483:37:089:039:20
9:20
#18992
40K
24.85 mi14:36:283:44:489:037:40
8:58
#18874
25.2M
25.20 mi14:39:523:48:129:033:24
9:52
#18838
Finish
26.22 mi14:48:483:57:089:038:56
8:46
#18795
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi18421115741157417967(Top 67%)11477(Top 76%)11477(Top 807%)
10K6.21 mi3.10 mi18084+33711482+9211482+9217765(Top 67%)11397(Top 75%)11397(Top 801%)
15K9.32 mi3.11 mi18032+5211466+1611466+1617967(Top 67%)11477(Top 76%)11477(Top 807%)
20K12.43 mi3.11 mi18438-40611646-18011646-18019549(Top 73%)12118(Top 80%)12118(Top 852%)
Half13.11 mi0.68 mi18711-27311748-10211748-10222092(Top 83%)13232(Top 87%)13232(Top 931%)
25K15.53 mi2.42 mi18706+511730+1811730+1818707(Top 70%)11721(Top 77%)11721(Top 824%)
30K18.64 mi3.11 mi19006-30011843-11311843-11320003(Top 75%)12210(Top 80%)12210(Top 859%)
20M20.00 mi1.36 mi18976+3011808+3511808+3518735(Top 70%)11564(Top 76%)11564(Top 813%)
21M21.00 mi1.00 mi18943+3311787+2111787+2118253(Top 69%)11333(Top 75%)11333(Top 797%)
35K21.75 mi0.75 mi19088-14511844-5711844-5721666(Top 81%)12779(Top 84%)12779(Top 899%)
23M23.00 mi1.25 mi19001+8711796+4811796+4817748(Top 67%)11012(Top 73%)11012(Top 774%)
24M24.00 mi1.00 mi18992+911777+1911777+1918588(Top 70%)11349(Top 75%)11349(Top 798%)
40K24.85 mi0.85 mi18874+11811721+5611721+5615957(Top 60%)10118(Top 67%)10118(Top 712%)
25.2M25.20 mi0.35 mi18838+3611696+2511696+2516781(Top 63%)10467(Top 69%)10467(Top 736%)
Finish26.22 mi1.02 mi18795+4311672+2411672+2416838(Top 63%)10539(Top 69%)10539(Top 741%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17967

Males

11477

M55-59

11477

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17765

Males

11397

M55-59

11397

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17967

Males

11477

M55-59

11477

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19549

Males

12118

M55-59

12118

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22092

Males

13232

M55-59

13232

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18707

Males

11721

M55-59

11721

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

20003

Males

12210

M55-59

12210

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18735

Males

11564

M55-59

11564

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18253

Males

11333

M55-59

11333

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

21666

Males

12779

M55-59

12779

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17748

Males

11012

M55-59

11012

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18588

Males

11349

M55-59

11349

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15957

Males

10118

M55-59

10118

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16781

Males

10467

M55-59

10467

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16838

Males

10539

M55-59

10539

Passing Analysis

Category:
Athletes Passed
1668
Passed By
2042
Net Change
-374
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18421
5K → 10K530193+337#18421#18084
10K → 15K213161+52#18084#18032
15K → 20K77483-406#18032#18438
20K → Half3276-273#18438#18711
Half → 25K126121+5#18711#18706
25K → 30K94394-300#18706#19006
30K → 20M9262+30#19006#18976
20M → 21M9562+33#18976#18943
21M → 35K15160-145#18943#19088
35K → 23M12134+87#19088#19001
23M → 24M6354+9#19001#18992
24M → 40K1268+118#18992#18874
40K → 25.2M4610+36#18874#18838
25.2M → Finish6724+43#18838#18795
TOTALS16682042-374
📊

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