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BOSTON MARATHON 2023

Kent Westerberg

Bib: 14377•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 44%
Division (M50-54)
#0 / 2052
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
7:29/mi
23:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
46:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:18/mi
1:08:55
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:31:55
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:36:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:36/mi
1:55:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:27/mi
2:21:39
↑ 181↓ 1480.2%
20M
8:07/mi
2:32:41
↑ 64↓ 500.2%
21M
8:35/mi
2:41:16
↑ 106↓ 241.6%
35K· 21.75 mi
8:48/mi
2:47:51
↑ 17↓ 861.7%
23M
8:20/mi
2:58:17
↑ 23↓ 630.6%
24M
8:17/mi
3:06:34
↓ 821.3%
40K· 24.85 mi
8:31/mi
3:13:51
↓ 200.3%
25.2M
8:45/mi
3:16:52
↑ 13↓ 160.2%
Finish· 26.22 mi
7:38/mi
3:24:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:58
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:47:41
Pace8:13 /mi
📊Positive Split: 11.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3023:157:2923:15
7:29
-
10K
6.21 mi11:15:2846:137:2622:58
7:24
-0:05
15K
9.32 mi11:38:101:08:557:2422:42
7:18
-0:06
20K
12.43 mi12:01:101:31:557:2423:00
7:24
+0:06
Half
13.11 mi12:06:131:36:587:245:03
7:24
0:00
25K
15.53 mi12:24:381:55:237:2618:25
7:36
+0:12
30K
18.64 mi12:50:542:21:397:3626:16
8:27
+0:51
20M
20.00 mi13:01:562:32:417:3811:02
8:07
-0:20
21M
21.00 mi13:10:312:41:167:418:35
8:35
+0:28
35K
21.75 mi13:17:062:47:517:436:35
8:48
+0:13
23M
23.00 mi13:27:322:58:177:4510:26
8:20
-0:28
24M
24.00 mi13:35:493:06:347:468:17
8:17
-0:03
40K
24.85 mi13:43:063:13:517:487:17
8:31
+0:14
25.2M
25.20 mi13:46:073:16:527:493:01
8:45
+0:14
Finish
26.22 mi13:53:543:24:397:497:47
7:38
-1:07

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

7:18 /mi

Average Pace

7:49 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:10

60% of race

Time at Steady Pace

29:45

15% of race

Time at Slower Pace

51:44

25% of race

Average Pace: 7:48 /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 mi10:52:3023:157:2923:15
7:29
#9484
10K
6.21 mi11:15:2846:137:2622:58
7:24
#9480
15K
9.32 mi11:38:101:08:557:2422:42
7:18
#9138
20K
12.43 mi12:01:101:31:557:2423:00
7:24
#8972
Half
13.11 mi12:06:131:36:587:245:03
7:24
#8998
25K
15.53 mi12:24:381:55:237:2618:25
7:36
#9043
30K
18.64 mi12:50:542:21:397:3626:16
8:27
#9962
20M
20.00 mi13:01:562:32:417:3811:02
8:07
#10016
21M
21.00 mi13:10:312:41:167:418:35
8:35
#10048
35K
21.75 mi13:17:062:47:517:436:35
8:48
#10339
23M
23.00 mi13:27:322:58:177:4510:26
8:20
#10407
24M
24.00 mi13:35:493:06:347:468:17
8:17
#10526
40K
24.85 mi13:43:063:13:517:487:17
8:31
#10620
25.2M
25.20 mi13:46:073:16:527:493:01
8:45
#10622
Finish
26.22 mi13:53:543:24:397:497:47
7:38
#10546
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9484786378638612(Top 32%)7321(Top 48%)7321(Top 357%)
10K6.21 mi3.10 mi9480+47867-47867-49550(Top 36%)7900(Top 52%)7900(Top 385%)
15K9.32 mi3.11 mi9138+3427650+2177650+2178612(Top 32%)7321(Top 48%)7321(Top 357%)
20K12.43 mi3.11 mi8972+1667532+1187532+1188539(Top 32%)7223(Top 48%)7223(Top 352%)
Half13.11 mi0.68 mi8998-267545-137545-139434(Top 35%)7784(Top 51%)7784(Top 379%)
25K15.53 mi2.42 mi9043-457572-277572-279507(Top 36%)7718(Top 51%)7718(Top 376%)
30K18.64 mi3.11 mi9962-9198074-5028074-50214000(Top 53%)9649(Top 64%)9649(Top 470%)
20M20.00 mi1.36 mi10016-548076-28076-211130(Top 42%)8314(Top 55%)8314(Top 405%)
21M21.00 mi1.00 mi10048-328060+168060+1610949(Top 41%)8094(Top 53%)8094(Top 394%)
35K21.75 mi0.75 mi10339-2918194-1348194-13416892(Top 63%)10641(Top 70%)10641(Top 519%)
23M23.00 mi1.25 mi10407-688191+38191+312099(Top 45%)8508(Top 56%)8508(Top 415%)
24M24.00 mi1.00 mi10526-1198214-238214-2313133(Top 49%)8909(Top 59%)8909(Top 434%)
40K24.85 mi0.85 mi10620-948233-198233-1913429(Top 50%)8968(Top 59%)8968(Top 437%)
25.2M25.20 mi0.35 mi10622-28225+88225+810957(Top 41%)7768(Top 51%)7768(Top 379%)
Finish26.22 mi1.02 mi10546+768159+668159+669531(Top 36%)7037(Top 46%)7037(Top 343%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8612

Males

7321

M50-54

7321

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9550

Males

7900

M50-54

7900

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8612

Males

7321

M50-54

7321

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8539

Males

7223

M50-54

7223

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9434

Males

7784

M50-54

7784

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9507

Males

7718

M50-54

7718

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

14000

Males

9649

M50-54

9649

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11130

Males

8314

M50-54

8314

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10949

Males

8094

M50-54

8094

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16892

Males

10641

M50-54

10641

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12099

Males

8508

M50-54

8508

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13133

Males

8909

M50-54

8909

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

13429

Males

8968

M50-54

8968

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10957

Males

7768

M50-54

7768

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9531

Males

7037

M50-54

7037

Passing Analysis

Category:
Athletes Passed
1457
Passed By
2518
Net Change
-1062
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9484
5K → 10K288284+4#9484#9480
10K → 15K37129+342#9480#9138
15K → 20K21347+166#9138#8972
20K → Half2046-26#8972#8998
Half → 25K92137-45#8998#9043
25K → 30K23942-919#9043#9962
30K → 20M74127-54#9962#10016
20M → 21M82114-32#10016#10048
21M → 35K12303-291#10048#10339
35K → 23M64132-68#10339#10407
23M → 24M38157-119#10407#10526
24M → 40K43137-94#10526#10620
40K → 25.2M2830-2#10620#10622
25.2M → Finish10933+76#10622#10546
TOTALS14572518-1062
📊

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