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BOSTON MARATHON 2023

Chenghsien Peng

Bib: 10727•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
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
7:40/mi
23:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
49:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:14:04
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:39:11
↑ 106↓ 860.1%
Half· 13.11 mi
7:53/mi
1:44:34
↑ 19↓ 370.5%
25K· 15.53 mi
8:06/mi
2:04:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:17/mi
2:29:56
↑ 181↓ 1480.2%
20M
8:16/mi
2:41:10
↑ 64↓ 500.2%
21M
9:31/mi
2:50:41
↑ 106↓ 241.6%
35K· 21.75 mi
9:33/mi
2:57:50
↑ 17↓ 861.7%
23M
9:53/mi
3:10:12
↑ 23↓ 630.6%
24M
9:17/mi
3:19:29
↓ 821.3%
40K· 24.85 mi
8:33/mi
3:26:48
↓ 200.3%
25.2M
10:44/mi
3:30:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:26/mi
3:39:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:34
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:54:32
Pace8:44 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:5323:487:4023:48
7:40
-
10K
6.21 mi11:15:1849:137:5525:25
8:11
+0:31
15K
9.32 mi11:40:091:14:047:5724:51
8:00
-0:11
20K
12.43 mi12:05:161:39:117:5925:07
8:05
+0:05
Half
13.11 mi12:10:391:44:347:595:23
7:53
-0:12
25K
15.53 mi12:30:172:04:128:0019:38
8:06
+0:13
30K
18.64 mi12:56:012:29:568:0325:44
8:17
+0:11
20M
20.00 mi13:07:152:41:108:0311:14
8:16
-0:01
21M
21.00 mi13:16:462:50:418:089:31
9:31
+1:15
35K
21.75 mi13:23:552:57:508:117:09
9:33
+0:02
23M
23.00 mi13:36:173:10:128:1612:22
9:53
+0:20
24M
24.00 mi13:45:343:19:298:199:17
9:17
-0:36
40K
24.85 mi13:52:533:26:488:197:19
8:33
-0:44
25.2M
25.20 mi13:56:353:30:308:213:42
10:44
+2:11
Finish
26.22 mi14:05:113:39:068:228:36
8:26
-2:18

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

7:40 /mi

Average Pace

8:22 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:48

11% of race

Time at Steady Pace

2:33:17

70% of race

Time at Slower Pace

42:01

19% of race

Average Pace: 8:21 /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 mi10:49:5323:487:4023:48
7:40
#11107
10K
6.21 mi11:15:1849:137:5525:25
8:11
#13741
15K
9.32 mi11:40:091:14:047:5724:51
8:00
#13945
20K
12.43 mi12:05:161:39:117:5925:07
8:05
#13945
Half
13.11 mi12:10:391:44:347:595:23
7:53
#13919
25K
15.53 mi12:30:172:04:128:0019:38
8:06
#13833
30K
18.64 mi12:56:012:29:568:0325:44
8:17
#13620
20M
20.00 mi13:07:152:41:108:0311:14
8:16
#13486
21M
21.00 mi13:16:462:50:418:089:31
9:31
#13670
35K
21.75 mi13:23:552:57:508:117:09
9:33
#13993
23M
23.00 mi13:36:173:10:128:1612:22
9:53
#14468
24M
24.00 mi13:45:343:19:298:199:17
9:17
#14657
40K
24.85 mi13:52:533:26:488:197:19
8:33
#14601
25.2M
25.20 mi13:56:353:30:308:213:42
10:44
#14697
Finish
26.22 mi14:05:113:39:068:228:36
8:26
#14700
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi111078711871114362(Top 54%)10045(Top 66%)10045(Top 446%)
10K6.21 mi3.10 mi13741-26349829-11189829-111816103(Top 60%)10743(Top 71%)10743(Top 477%)
15K9.32 mi3.11 mi13945-2049898-699898-6914362(Top 54%)10045(Top 66%)10045(Top 446%)
20K12.43 mi3.11 mi139459876+229876+2214115(Top 53%)9929(Top 65%)9929(Top 441%)
Half13.11 mi0.68 mi13919+269864+129864+1213480(Top 51%)9685(Top 64%)9685(Top 430%)
25K15.53 mi2.42 mi13833+869805+599805+5913490(Top 51%)9559(Top 63%)9559(Top 424%)
30K18.64 mi3.11 mi13620+2139694+1119694+11112914(Top 49%)9199(Top 61%)9199(Top 408%)
20M20.00 mi1.36 mi13486+1349621+739621+7312136(Top 46%)8773(Top 58%)8773(Top 390%)
21M21.00 mi1.00 mi13670-1849682-619682-6116006(Top 60%)10349(Top 68%)10349(Top 460%)
35K21.75 mi0.75 mi13993-3239782-1009782-10020006(Top 75%)12040(Top 79%)12040(Top 535%)
23M23.00 mi1.25 mi14468-4759937-1559937-15519620(Top 74%)11845(Top 78%)11845(Top 526%)
24M24.00 mi1.00 mi14657-1899983-469983-4618374(Top 69%)11251(Top 74%)11251(Top 500%)
40K24.85 mi0.85 mi14601+569942+419942+4113684(Top 51%)9104(Top 60%)9104(Top 404%)
25.2M25.20 mi0.35 mi14697-969973-319973-3119728(Top 74%)11780(Top 78%)11780(Top 523%)
Finish26.22 mi1.02 mi14700-39959+149959+1414979(Top 56%)9721(Top 64%)9721(Top 432%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14362

Males

10045

M45-49

10045

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16103

Males

10743

M45-49

10743

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14362

Males

10045

M45-49

10045

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14115

Males

9929

M45-49

9929

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13480

Males

9685

M45-49

9685

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13490

Males

9559

M45-49

9559

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

12914

Males

9199

M45-49

9199

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

12136

Males

8773

M45-49

8773

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

16006

Males

10349

M45-49

10349

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

20006

Males

12040

M45-49

12040

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19620

Males

11845

M45-49

11845

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

18374

Males

11251

M45-49

11251

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13684

Males

9104

M45-49

9104

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19728

Males

11780

M45-49

11780

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14979

Males

9721

M45-49

9721

Passing Analysis

Category:
Athletes Passed
1214
Passed By
4807
Net Change
-3593
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11107
5K → 10K82642-2634#11107#13741
10K → 15K98302-204#13741#13945
15K → 20K1861860#13945#13945
20K → Half4620+26#13945#13919
Half → 25K16983+86#13919#13833
25K → 30K28976+213#13833#13620
30K → 20M17036+134#13620#13486
20M → 21M45229-184#13486#13670
21M → 35K9332-323#13670#13993
35K → 23M15490-475#13993#14468
23M → 24M34223-189#14468#14657
24M → 40K8125+56#14657#14601
40K → 25.2M9105-96#14601#14697
25.2M → Finish5558-3#14697#14700
TOTALS12144807-3593
📊

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