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BOSTON MARATHON 2023

Shengyu Fu

Bib: 13077•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 49%
Masters (Masters Men)
#0 / 9891
Top 38%
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
7:25/mi
23:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:23/mi
45:59
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:08:54
↑ 67↓ 78
20K· 12.43 mi
7:31/mi
1:32:15
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:37:15
↑ 19↓ 370.5%
25K· 15.53 mi
7:34/mi
1:55:36
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:19:48
↑ 181↓ 1480.2%
20M
8:00/mi
2:30:40
↑ 64↓ 500.2%
21M
8:51/mi
2:39:31
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:45:12
↑ 17↓ 861.7%
23M
7:57/mi
2:55:09
↑ 23↓ 630.6%
24M
7:35/mi
3:02:44
↓ 821.3%
40K· 24.85 mi
7:44/mi
3:09:21
↓ 200.3%
25.2M
8:22/mi
3:12:14
↑ 13↓ 160.2%
Finish· 26.22 mi
7:50/mi
3:20:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:15
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:42:58
Pace7:51 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0623:047:2523:04
7:25
-
10K
6.21 mi11:14:0145:597:2422:55
7:23
-0:02
15K
9.32 mi11:36:561:08:547:2422:55
7:23
0:00
20K
12.43 mi12:00:171:32:157:2523:21
7:31
+0:08
Half
13.11 mi12:05:171:37:157:255:00
7:20
-0:11
25K
15.53 mi12:23:381:55:367:2618:21
7:34
+0:14
30K
18.64 mi12:47:502:19:487:3024:12
7:47
+0:13
20M
20.00 mi12:58:422:30:407:3210:52
8:00
+0:13
21M
21.00 mi13:07:332:39:317:368:51
8:51
+0:51
35K
21.75 mi13:13:142:45:127:365:41
7:36
-1:15
23M
23.00 mi13:23:112:55:097:379:57
7:57
+0:21
24M
24.00 mi13:30:463:02:447:377:35
7:35
-0:22
40K
24.85 mi13:37:233:09:217:376:37
7:44
+0:09
25.2M
25.20 mi13:40:163:12:147:382:53
8:22
+0:38
Finish
26.22 mi13:48:153:20:137:397:59
7:50
-0:32

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

7:20 /mi

Average Pace

7:39 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:50

25% of race

Time at Steady Pace

1:48:51

54% of race

Time at Slower Pace

40:32

20% of race

Average Pace: 7:38 /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 mi10:51:0623:047:2523:04
7:25
#9019
10K
6.21 mi11:14:0145:597:2422:55
7:23
#9176
15K
9.32 mi11:36:561:08:547:2422:55
7:23
#9128
20K
12.43 mi12:00:171:32:157:2523:21
7:31
#9174
Half
13.11 mi12:05:171:37:157:255:00
7:20
#9154
25K
15.53 mi12:23:381:55:367:2618:21
7:34
#9151
30K
18.64 mi12:47:502:19:487:3024:12
7:47
#9156
20M
20.00 mi12:58:422:30:407:3210:52
8:00
#9219
21M
21.00 mi13:07:332:39:317:368:51
8:51
#9401
35K
21.75 mi13:13:142:45:127:365:41
7:36
#9366
23M
23.00 mi13:23:112:55:097:379:57
7:57
#9319
24M
24.00 mi13:30:463:02:447:377:35
7:35
#9251
40K
24.85 mi13:37:233:09:217:376:37
7:44
#9190
25.2M
25.20 mi13:40:163:12:147:382:53
8:22
#9179
Finish
26.22 mi13:48:153:20:137:397:59
7:50
#9250
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi9019760676069139(Top 34%)7629(Top 50%)7629(Top 339%)
10K6.21 mi3.10 mi9176-1577681-757681-759423(Top 35%)7813(Top 51%)7813(Top 347%)
15K9.32 mi3.11 mi9128+487643+387643+389139(Top 34%)7629(Top 50%)7629(Top 339%)
20K12.43 mi3.11 mi9174-467660-177660-179428(Top 35%)7754(Top 51%)7754(Top 344%)
Half13.11 mi0.68 mi9154+207646+147646+148801(Top 33%)7392(Top 49%)7392(Top 328%)
25K15.53 mi2.42 mi9151+37639+77639+79285(Top 35%)7600(Top 50%)7600(Top 337%)
30K18.64 mi3.11 mi9156-57597+427597+429268(Top 35%)7435(Top 49%)7435(Top 330%)
20M20.00 mi1.36 mi9219-637608-117608-1110205(Top 38%)7858(Top 52%)7858(Top 349%)
21M21.00 mi1.00 mi9401-1827695-877695-8712513(Top 47%)8797(Top 58%)8797(Top 391%)
35K21.75 mi0.75 mi9366+357657+387657+389222(Top 35%)7199(Top 47%)7199(Top 320%)
23M23.00 mi1.25 mi9319+477604+537604+539372(Top 35%)7158(Top 47%)7158(Top 318%)
24M24.00 mi1.00 mi9251+687541+637541+638276(Top 31%)6481(Top 43%)6481(Top 288%)
40K24.85 mi0.85 mi9190+617478+637478+638222(Top 31%)6386(Top 42%)6386(Top 284%)
25.2M25.20 mi0.35 mi9179+117463+157463+158633(Top 32%)6534(Top 43%)6534(Top 290%)
Finish26.22 mi1.02 mi9250-717482-197482-1910906(Top 41%)7743(Top 51%)7743(Top 344%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

9139

Males

7629

M45-49

7629

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9423

Males

7813

M45-49

7813

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

9139

Males

7629

M45-49

7629

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9428

Males

7754

M45-49

7754

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8801

Males

7392

M45-49

7392

Half→25K

13.1 - 15.5 mi

Top 35%
×4story building
+66ft-88ft

Overall

9285

Males

7600

M45-49

7600

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9268

Males

7435

M45-49

7435

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10205

Males

7858

M45-49

7858

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

12513

Males

8797

M45-49

8797

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9222

Males

7199

M45-49

7199

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9372

Males

7158

M45-49

7158

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8276

Males

6481

M45-49

6481

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8222

Males

6386

M45-49

6386

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8633

Males

6534

M45-49

6534

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10906

Males

7743

M45-49

7743

Passing Analysis

Category:
Athletes Passed
1333
Passed By
1564
Net Change
-231
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9019
5K → 10K206363-157#9019#9176
10K → 15K173125+48#9176#9128
15K → 20K121167-46#9128#9174
20K → Half3111+20#9174#9154
Half → 25K121118+3#9154#9151
25K → 30K165170-5#9151#9156
30K → 20M60123-63#9156#9219
20M → 21M40222-182#9219#9401
21M → 35K6429+35#9401#9366
35K → 23M10154+47#9366#9319
23M → 24M9628+68#9319#9251
24M → 40K9332+61#9251#9190
40K → 25.2M2615+11#9190#9179
25.2M → Finish36107-71#9179#9250
TOTALS13331564-231
📊

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