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BOSTON MARATHON 2023

Samuel Wu

Bib: 5515•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 24%
Division (M18-39)
#0 / 5285
Top 48%
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
6:41/mi
20:45
↑ 97↓ 3451.5%
10K· 6.21 mi
6:34/mi
41:09
↑ 79↓ 1380.4%
15K· 9.32 mi
6:37/mi
1:01:41
↑ 67↓ 78
20K· 12.43 mi
6:38/mi
1:22:19
↑ 106↓ 860.1%
Half· 13.11 mi
6:37/mi
1:26:50
↑ 19↓ 370.5%
25K· 15.53 mi
6:38/mi
1:42:54
↑ 66↓ 880.2%
30K· 18.64 mi
6:47/mi
2:03:58
↑ 181↓ 1480.2%
20M
6:49/mi
2:13:14
↑ 64↓ 500.2%
21M
7:22/mi
2:20:36
↑ 106↓ 241.6%
35K· 21.75 mi
6:36/mi
2:25:32
↑ 17↓ 861.7%
23M
7:26/mi
2:34:51
↑ 23↓ 630.6%
24M
7:37/mi
2:42:28
↓ 821.3%
40K· 24.85 mi
7:27/mi
2:48:50
↓ 200.3%
25.2M
7:56/mi
2:51:34
↑ 13↓ 160.2%
Finish· 26.22 mi
7:10/mi
2:58:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:50
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:32:02
Pace7:01 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2920:456:4120:45
6:41
-
10K
6.21 mi10:43:5341:096:3720:24
6:34
-0:07
15K
9.32 mi11:04:251:01:416:3720:32
6:37
+0:03
20K
12.43 mi11:25:031:22:196:3720:38
6:38
+0:01
Half
13.11 mi11:29:341:26:506:374:31
6:37
-0:01
25K
15.53 mi11:45:381:42:546:3716:04
6:38
+0:01
30K
18.64 mi12:06:422:03:586:3921:04
6:47
+0:09
20M
20.00 mi12:15:582:13:146:409:16
6:49
+0:02
21M
21.00 mi12:23:202:20:366:427:22
7:22
+0:33
35K
21.75 mi12:28:162:25:326:424:56
6:36
-0:46
23M
23.00 mi12:37:352:34:516:449:19
7:26
+0:50
24M
24.00 mi12:45:122:42:286:467:37
7:37
+0:11
40K
24.85 mi12:51:342:48:506:486:22
7:27
-0:10
25.2M
25.20 mi12:54:182:51:346:482:44
7:56
+0:29
Finish
26.22 mi13:01:362:58:526:507:18
7:10
-0:46

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

6:34 /mi

Average Pace

6:50 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:18:10

77% of race

Time at Slower Pace

40:42

23% of race

Average Pace: 6:49 /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 mi10:23:2920:456:4120:45
6:41
#3475
10K
6.21 mi10:43:5341:096:3720:24
6:34
#3328
15K
9.32 mi11:04:251:01:416:3720:32
6:37
#3336
20K
12.43 mi11:25:031:22:196:3720:38
6:38
#3249
Half
13.11 mi11:29:341:26:506:374:31
6:37
#3261
25K
15.53 mi11:45:381:42:546:3716:04
6:38
#3164
30K
18.64 mi12:06:422:03:586:3921:04
6:47
#3045
20M
20.00 mi12:15:582:13:146:409:16
6:49
#3012
21M
21.00 mi12:23:202:20:366:427:22
7:22
#3063
35K
21.75 mi12:28:162:25:326:424:56
6:36
#3041
23M
23.00 mi12:37:352:34:516:449:19
7:26
#3220
24M
24.00 mi12:45:122:42:286:467:37
7:37
#3477
40K
24.85 mi12:51:342:48:506:486:22
7:27
#3585
25.2M
25.20 mi12:54:182:51:346:482:44
7:56
#3639
Finish
26.22 mi13:01:362:58:526:507:18
7:10
#3803
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3475327632763366(Top 13%)3195(Top 21%)3195(Top 60%)
10K6.21 mi3.10 mi3328+1473152+1243152+1243245(Top 12%)3091(Top 20%)3091(Top 58%)
15K9.32 mi3.11 mi3336-83165-133165-133366(Top 13%)3195(Top 21%)3195(Top 60%)
20K12.43 mi3.11 mi3249+873091+743091+743116(Top 12%)2963(Top 20%)2963(Top 56%)
Half13.11 mi0.68 mi3261-123102-113102-113604(Top 14%)3412(Top 22%)3412(Top 65%)
25K15.53 mi2.42 mi3164+973013+893013+892886(Top 11%)2757(Top 18%)2757(Top 52%)
30K18.64 mi3.11 mi3045+1192902+1112902+1112861(Top 11%)2711(Top 18%)2711(Top 51%)
20M20.00 mi1.36 mi3012+332871+312871+312952(Top 11%)2777(Top 18%)2777(Top 53%)
21M21.00 mi1.00 mi3063-512909-382909-383960(Top 15%)3652(Top 24%)3652(Top 69%)
35K21.75 mi0.75 mi3041+222890+192890+192995(Top 11%)2806(Top 18%)2806(Top 53%)
23M23.00 mi1.25 mi3220-1793051-1613051-1616070(Top 23%)5222(Top 34%)5222(Top 99%)
24M24.00 mi1.00 mi3477-2573286-2353286-2358466(Top 32%)6578(Top 43%)6578(Top 124%)
40K24.85 mi0.85 mi3585-1083380-943380-946309(Top 24%)5208(Top 34%)5208(Top 99%)
25.2M25.20 mi0.35 mi3639-543424-443424-445966(Top 22%)4897(Top 32%)4897(Top 93%)
Finish26.22 mi1.02 mi3803-1643570-1463570-1466155(Top 23%)5028(Top 33%)5028(Top 95%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21story building
+97ft-345ft

Overall

3366

Males

3195

M18-39

3195

5K→10K

3.1 - 6.2 mi

Top 12%
×5story building
+79ft-138ft

Overall

3245

Males

3091

M18-39

3091

10K→15K

6.2 - 9.3 mi

Top 13%
×3story building
+67ft-78ft

Overall

3366

Males

3195

M18-39

3195

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3116

Males

2963

M18-39

2963

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3604

Males

3412

M18-39

3412

Half→25K

13.1 - 15.5 mi

Top 11%
×4story building
+66ft-88ft

Overall

2886

Males

2757

M18-39

2757

25K→30K

15.5 - 18.6 mi

Top 11%
×9story building
+181ft-148ft

Overall

2861

Males

2711

M18-39

2711

30K→20M

18.6 - 20.0 mi

Top 11%
×5story building
+64ft-50ft

Overall

2952

Males

2777

M18-39

2777

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

3960

Males

3652

M18-39

3652

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

2995

Males

2806

M18-39

2806

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6070

Males

5222

M18-39

5222

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8466

Males

6578

M18-39

6578

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6309

Males

5208

M18-39

5208

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5966

Males

4897

M18-39

4897

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6155

Males

5028

M18-39

5028

Passing Analysis

Category:
Athletes Passed
967
Passed By
1295
Net Change
-328
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3475
5K → 10K260113+147#3475#3328
10K → 15K8997-8#3328#3336
15K → 20K13144+87#3336#3249
20K → Half1628-12#3249#3261
Half → 25K11417+97#3261#3164
25K → 30K15334+119#3164#3045
30K → 20M5825+33#3045#3012
20M → 21M3384-51#3012#3063
21M → 35K3816+22#3063#3041
35K → 23M26205-179#3041#3220
23M → 24M3260-257#3220#3477
24M → 40K23131-108#3477#3585
40K → 25.2M862-54#3585#3639
25.2M → Finish15179-164#3639#3803
TOTALS9671295-328
📊

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