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BOSTON MARATHON 2023

Jeng-Ying Chang

Bib: 11560•M

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
7:19/mi
22:43
↑ 97↓ 3451.5%
10K· 6.21 mi
7:38/mi
46:25
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:10:35
↑ 67↓ 78
20K· 12.43 mi
8:10/mi
1:35:57
↑ 106↓ 860.1%
Half· 13.11 mi
9:51/mi
1:42:40
↑ 19↓ 370.5%
25K· 15.53 mi
8:33/mi
2:03:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:50/mi
2:30:50
↑ 181↓ 1480.2%
20M
9:10/mi
2:43:17
↑ 64↓ 500.2%
21M
10:34/mi
2:53:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:03/mi
3:00:37
↑ 17↓ 861.7%
23M
9:28/mi
3:12:28
↑ 23↓ 630.6%
24M
8:51/mi
3:21:19
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:28:37
↓ 200.3%
25.2M
9:02/mi
3:31:44
↑ 13↓ 160.2%
Finish· 26.22 mi
8:06/mi
3:39:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:40
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:57:19
Pace8:57 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2722:437:1922:43
7:19
-
10K
6.21 mi11:13:0946:257:2823:42
7:38
+0:19
15K
9.32 mi11:37:191:10:357:3424:10
7:47
+0:09
20K
12.43 mi12:02:411:35:577:4325:22
8:10
+0:23
Half
13.11 mi12:09:241:42:407:506:43
9:51
+1:41
25K
15.53 mi12:30:072:03:237:5720:43
8:33
-1:18
30K
18.64 mi12:57:342:30:508:0527:27
8:50
+0:17
20M
20.00 mi13:10:012:43:178:1012:27
9:10
+0:20
21M
21.00 mi13:20:352:53:518:1710:34
10:34
+1:24
35K
21.75 mi13:27:213:00:378:186:46
9:03
-1:31
23M
23.00 mi13:39:123:12:288:2211:51
9:28
+0:25
24M
24.00 mi13:48:033:21:198:238:51
8:51
-0:37
40K
24.85 mi13:55:213:28:378:247:18
8:32
-0:19
25.2M
25.20 mi13:58:283:31:448:243:07
9:02
+0:30
Finish
26.22 mi14:06:433:39:598:248:15
8:06
-0:56

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

7:19 /mi

Average Pace

8:24 /mi

Slowest Pace

10:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:12

47% of race

Time at Steady Pace

1:26:39

39% of race

Time at Slower Pace

29:08

13% of race

Average Pace: 8:23 /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 mi10:49:2722:437:1922:43
7:19
#8181
10K
6.21 mi11:13:0946:257:2823:42
7:38
#9748
15K
9.32 mi11:37:191:10:357:3424:10
7:47
#10692
20K
12.43 mi12:02:411:35:577:4325:22
8:10
#11699
Half
13.11 mi12:09:241:42:407:506:43
9:51
#12687
25K
15.53 mi12:30:072:03:237:5720:43
8:33
#13402
30K
18.64 mi12:57:342:30:508:0527:27
8:50
#14036
20M
20.00 mi13:10:012:43:178:1012:27
9:10
#14310
21M
21.00 mi13:20:352:53:518:1710:34
10:34
#14757
35K
21.75 mi13:27:213:00:378:186:46
9:03
#14881
23M
23.00 mi13:39:123:12:288:2211:51
9:28
#15084
24M
24.00 mi13:48:033:21:198:238:51
8:51
#15128
40K
24.85 mi13:55:213:28:378:247:18
8:32
#15066
25.2M
25.20 mi13:58:283:31:448:243:07
9:02
#15018
Finish
26.22 mi14:06:433:39:598:248:15
8:06
#14945
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi81817101710112528(Top 47%)9313(Top 61%)9313(Top 655%)
10K6.21 mi3.10 mi9748-15678013-9128013-91211577(Top 43%)8923(Top 59%)8923(Top 627%)
15K9.32 mi3.11 mi10692-9448513-5008513-50012528(Top 47%)9313(Top 61%)9313(Top 655%)
20K12.43 mi3.11 mi11699-10078941-4288941-42814695(Top 55%)10155(Top 67%)10155(Top 714%)
Half13.11 mi0.68 mi12687-9889362-4219362-42122953(Top 86%)13596(Top 90%)13596(Top 956%)
25K15.53 mi2.42 mi13402-7159639-2779639-27716445(Top 62%)10728(Top 71%)10728(Top 754%)
30K18.64 mi3.11 mi14036-6349847-2089847-20816268(Top 61%)10591(Top 70%)10591(Top 745%)
20M20.00 mi1.36 mi14310-2749926-799926-7917342(Top 65%)10957(Top 72%)10957(Top 771%)
21M21.00 mi1.00 mi14757-44710095-16910095-16919777(Top 74%)11945(Top 79%)11945(Top 840%)
35K21.75 mi0.75 mi14881-12410126-3110126-3118053(Top 68%)11155(Top 74%)11155(Top 784%)
23M23.00 mi1.25 mi15084-20310170-4410170-4418170(Top 68%)11188(Top 74%)11188(Top 787%)
24M24.00 mi1.00 mi15128-4410176-610176-616467(Top 62%)10382(Top 68%)10382(Top 730%)
40K24.85 mi0.85 mi15066+6210132+4410132+4413575(Top 51%)9051(Top 60%)9051(Top 636%)
25.2M25.20 mi0.35 mi15018+4810100+3210100+3212709(Top 48%)8622(Top 57%)8622(Top 606%)
Finish26.22 mi1.02 mi14945+7310049+5110049+5112733(Top 48%)8648(Top 57%)8648(Top 608%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12528

Males

9313

M55-59

9313

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11577

Males

8923

M55-59

8923

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12528

Males

9313

M55-59

9313

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14695

Males

10155

M55-59

10155

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

22953

Males

13596

M55-59

13596

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

16445

Males

10728

M55-59

10728

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

16268

Males

10591

M55-59

10591

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17342

Males

10957

M55-59

10957

20M→21M

20.0 - 21.0 mi

Top 74%
×8story building
+106ft-24ft

Overall

19777

Males

11945

M55-59

11945

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18053

Males

11155

M55-59

11155

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

18170

Males

11188

M55-59

11188

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16467

Males

10382

M55-59

10382

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13575

Males

9051

M55-59

9051

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12709

Males

8622

M55-59

8622

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12733

Males

8648

M55-59

8648

Passing Analysis

Category:
Athletes Passed
549
Passed By
7311
Net Change
-6764
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8181
5K → 10K171584-1567#8181#9748
10K → 15K25967-944#9748#10692
15K → 20K181025-1007#10692#11699
20K → Half0988-988#11699#12687
Half → 25K34749-715#12687#13402
25K → 30K54688-634#13402#14036
30K → 20M29303-274#14036#14310
20M → 21M12459-447#14310#14757
21M → 35K24148-124#14757#14881
35K → 23M35238-203#14881#15084
23M → 24M4791-44#15084#15128
24M → 40K9230+62#15128#15066
40K → 25.2M6012+48#15066#15018
25.2M → Finish10229+73#15018#14945
TOTALS5497311-6764
📊

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