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BOSTON MARATHON 2023

Shan-Ho Wu

Bib: 5120•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 27%
Masters (Masters Men)
#0 / 9891
Top 13%
Division (M40-44)
#0 / 2241
Top 32%
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
6:36/mi
20:29
↑ 97↓ 3451.5%
10K· 6.21 mi
6:35/mi
40:56
↑ 79↓ 1380.4%
15K· 9.32 mi
6:33/mi
1:01:18
↑ 67↓ 78
20K· 12.43 mi
6:46/mi
1:22:20
↑ 106↓ 860.1%
Half· 13.11 mi
6:31/mi
1:26:47
↑ 19↓ 370.5%
25K· 15.53 mi
6:43/mi
1:43:03
↑ 66↓ 880.2%
30K· 18.64 mi
6:55/mi
2:04:33
↑ 181↓ 1480.2%
20M
7:07/mi
2:14:13
↑ 64↓ 500.2%
21M
7:44/mi
2:21:57
↑ 106↓ 241.6%
35K· 21.75 mi
6:41/mi
2:26:57
↑ 17↓ 861.7%
23M
7:22/mi
2:36:10
↑ 23↓ 630.6%
24M
7:21/mi
2:43:31
↓ 821.3%
40K· 24.85 mi
7:36/mi
2:50:01
↓ 200.3%
25.2M
8:48/mi
2:53:03
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:00:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:47
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:33:59
Pace7:10 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2320:296:3620:29
6:36
-
10K
6.21 mi10:43:5040:566:3520:27
6:35
-0:01
15K
9.32 mi11:04:121:01:186:3520:22
6:33
-0:02
20K
12.43 mi11:25:141:22:206:3821:02
6:46
+0:13
Half
13.11 mi11:29:411:26:476:374:27
6:31
-0:15
25K
15.53 mi11:45:571:43:036:3816:16
6:43
+0:12
30K
18.64 mi12:07:272:04:336:4121:30
6:55
+0:12
20M
20.00 mi12:17:072:14:136:439:40
7:07
+0:12
21M
21.00 mi12:24:512:21:576:467:44
7:44
+0:37
35K
21.75 mi12:29:512:26:576:455:00
6:41
-1:03
23M
23.00 mi12:39:042:36:106:479:13
7:22
+0:41
24M
24.00 mi12:46:252:43:316:497:21
7:21
-0:01
40K
24.85 mi12:52:552:50:016:506:30
7:36
+0:15
25.2M
25.20 mi12:55:572:53:036:523:02
8:48
+1:12
Finish
26.22 mi13:03:403:00:466:547:43
7:34
-1:14

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

6:31 /mi

Average Pace

6:54 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:45

36% of race

Time at Steady Pace

1:13:28

41% of race

Time at Slower Pace

41:33

23% of race

Average Pace: 6:54 /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 mi10:23:2320:296:3620:29
6:36
#2825
10K
6.21 mi10:43:5040:566:3520:27
6:35
#3072
15K
9.32 mi11:04:121:01:186:3520:22
6:33
#3024
20K
12.43 mi11:25:141:22:206:3821:02
6:46
#3256
Half
13.11 mi11:29:411:26:476:374:27
6:31
#3233
25K
15.53 mi11:45:571:43:036:3816:16
6:43
#3240
30K
18.64 mi12:07:272:04:336:4121:30
6:55
#3299
20M
20.00 mi12:17:072:14:136:439:40
7:07
#3378
21M
21.00 mi12:24:512:21:576:467:44
7:44
#3536
35K
21.75 mi12:29:512:26:576:455:00
6:41
#3512
23M
23.00 mi12:39:042:36:106:479:13
7:22
#3655
24M
24.00 mi12:46:252:43:316:497:21
7:21
#3846
40K
24.85 mi12:52:552:50:016:506:30
7:36
#4030
25.2M
25.20 mi12:55:572:53:036:523:02
8:48
#4183
Finish
26.22 mi13:03:403:00:466:547:43
7:34
#4366
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2825268826882972(Top 11%)2838(Top 19%)2838(Top 127%)
10K6.21 mi3.10 mi3072-2472925-2372925-2373368(Top 13%)3205(Top 21%)3205(Top 143%)
15K9.32 mi3.11 mi3024+482883+422883+422972(Top 11%)2838(Top 19%)2838(Top 127%)
20K12.43 mi3.11 mi3256-2323098-2153098-2154171(Top 16%)3910(Top 26%)3910(Top 174%)
Half13.11 mi0.68 mi3233+233076+223076+222974(Top 11%)2849(Top 19%)2849(Top 127%)
25K15.53 mi2.42 mi3240-73088-123088-123437(Top 13%)3258(Top 21%)3258(Top 145%)
30K18.64 mi3.11 mi3299-593133-453133-453794(Top 14%)3558(Top 23%)3558(Top 159%)
20M20.00 mi1.36 mi3378-793200-673200-674669(Top 18%)4274(Top 28%)4274(Top 191%)
21M21.00 mi1.00 mi3536-1583349-1493349-1495768(Top 22%)5020(Top 33%)5020(Top 224%)
35K21.75 mi0.75 mi3512+243327+223327+223490(Top 13%)3242(Top 21%)3242(Top 145%)
23M23.00 mi1.25 mi3655-1433450-1233450-1235604(Top 21%)4906(Top 32%)4906(Top 219%)
24M24.00 mi1.00 mi3846-1913613-1633613-1636683(Top 25%)5522(Top 36%)5522(Top 246%)
40K24.85 mi0.85 mi4030-1843773-1603773-1607288(Top 27%)5787(Top 38%)5787(Top 258%)
25.2M25.20 mi0.35 mi4183-1533914-1413914-14111174(Top 42%)7837(Top 52%)7837(Top 350%)
Finish26.22 mi1.02 mi4366-1834073-1594073-1599032(Top 34%)6749(Top 44%)6749(Top 301%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21story building
+97ft-345ft

Overall

2972

Males

2838

M40-44

2838

5K→10K

3.1 - 6.2 mi

Top 13%
×5story building
+79ft-138ft

Overall

3368

Males

3205

M40-44

3205

10K→15K

6.2 - 9.3 mi

Top 11%
×3story building
+67ft-78ft

Overall

2972

Males

2838

M40-44

2838

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4171

Males

3910

M40-44

3910

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

2974

Males

2849

M40-44

2849

Half→25K

13.1 - 15.5 mi

Top 13%
×4story building
+66ft-88ft

Overall

3437

Males

3258

M40-44

3258

25K→30K

15.5 - 18.6 mi

Top 14%
×9story building
+181ft-148ft

Overall

3794

Males

3558

M40-44

3558

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

4669

Males

4274

M40-44

4274

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

5768

Males

5020

M40-44

5020

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3490

Males

3242

M40-44

3242

35K→23M

21.8 - 23.0 mi

Top 21%
×5story building
+23ft-63ft

Overall

5604

Males

4906

M40-44

4906

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6683

Males

5522

M40-44

5522

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7288

Males

5787

M40-44

5787

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11174

Males

7837

M40-44

7837

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9032

Males

6749

M40-44

6749

Passing Analysis

Category:
Athletes Passed
563
Passed By
2104
Net Change
-1541
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2825
5K → 10K76323-247#2825#3072
10K → 15K12173+48#3072#3024
15K → 20K28260-232#3024#3256
20K → Half307+23#3256#3233
Half → 25K5865-7#3233#3240
25K → 30K68127-59#3240#3299
30K → 20M39118-79#3299#3378
20M → 21M19177-158#3378#3536
21M → 35K4723+24#3536#3512
35K → 23M32175-143#3512#3655
23M → 24M14205-191#3655#3846
24M → 40K17201-184#3846#4030
40K → 25.2M5158-153#4030#4183
25.2M → Finish9192-183#4183#4366
TOTALS5632104-1541
📊

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