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BOSTON MARATHON 2023

Chuangang Tu

Bib: 9486•M

IN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:28
Rank: #15445
Start → 5K
25:28 | 8:12/mi
10K· 6.21 mi
50:07
Rank: #14859 (+586)
5K → 10K
24:39 | 7:56/mi
15K· 9.32 mi
1:15:56
Rank: #15465 (-606)
10K → 15K
25:49 | 8:19/mi
20K· 12.43 mi
1:41:23
Rank: #15307 (+158)
15K → 20K
25:27 | 8:11/mi
Half· 13.11 mi
1:47:00
Rank: #15315 (-8)
20K → Half
5:37 | 8:14/mi
25K· 15.53 mi
2:07:27
Rank: #15379 (-64)
Half → 25K
20:27 | 8:26/mi
30K· 18.64 mi
2:34:54
Rank: #15547 (-168)
25K → 30K
27:27 | 8:50/mi
20M
2:46:50
Rank: #15504 (+43)
30K → 20M
11:56 | 8:47/mi
21M
2:56:15
Rank: #15474 (+30)
20M → 21M
9:25 | 9:25/mi
35K· 21.75 mi
3:02:50
Rank: #15535 (-61)
21M → 35K
6:35 | 8:48/mi
23M
3:13:02
Rank: #15238 (+297)
35K → 23M
10:12 | 8:09/mi
24M
3:21:15
Rank: #15116 (+122)
23M → 24M
8:13 | 8:13/mi
40K· 24.85 mi
3:28:03
Rank: #14916 (+200)
24M → 40K
6:48 | 7:57/mi
25.2M
3:30:56
Rank: #14804 (+112)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:38:12
Rank: #14470 (+334)
25.2M → Finish
7:16 | 7:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:00
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time1:51:12
Pace8:29 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2625:288:1225:28
8:12
-
10K
6.21 mi11:16:0550:078:0424:39
7:56
-0:16
15K
9.32 mi11:41:541:15:568:0925:49
8:19
+0:23
20K
12.43 mi12:07:211:41:238:0925:27
8:11
-0:08
Half
13.11 mi12:12:581:47:008:105:37
8:14
+0:03
25K
15.53 mi12:33:252:07:278:1220:27
8:26
+0:12
30K
18.64 mi13:00:522:34:548:1927:27
8:50
+0:24
20M
20.00 mi13:12:482:46:508:2011:56
8:47
-0:03
21M
21.00 mi13:22:132:56:158:249:25
9:25
+0:38
35K
21.75 mi13:28:483:02:508:246:35
8:48
-0:37
23M
23.00 mi13:39:003:13:028:2410:12
8:09
-0:39
24M
24.00 mi13:47:133:21:158:238:13
8:13
+0:04
40K
24.85 mi13:54:013:28:038:226:48
7:57
-0:16
25.2M
25.20 mi13:56:543:30:568:222:53
8:22
+0:25
Finish
26.22 mi14:04:103:38:128:207:16
7:08
-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

7:08 /mi

Average Pace

8:20 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

38:43

18% of race

Time at Steady Pace

2:04:06

57% of race

Time at Slower Pace

55:23

25% of race

Average Pace: 8:19 /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 mi10:51:2625:288:1225:28
8:12
#15445
10K
6.21 mi11:16:0550:078:0424:39
7:56
#14859
15K
9.32 mi11:41:541:15:568:0925:49
8:19
#15465
20K
12.43 mi12:07:211:41:238:0925:27
8:11
#15307
Half
13.11 mi12:12:581:47:008:105:37
8:14
#15315
25K
15.53 mi12:33:252:07:278:1220:27
8:26
#15379
30K
18.64 mi13:00:522:34:548:1927:27
8:50
#15547
20M
20.00 mi13:12:482:46:508:2011:56
8:47
#15504
21M
21.00 mi13:22:132:56:158:249:25
9:25
#15474
35K
21.75 mi13:28:483:02:508:246:35
8:48
#15535
23M
23.00 mi13:39:003:13:028:2410:12
8:09
#15238
24M
24.00 mi13:47:133:21:158:238:13
8:13
#15116
40K
24.85 mi13:54:013:28:038:226:48
7:57
#14916
25.2M
25.20 mi13:56:543:30:568:222:53
8:22
#14804
Finish
26.22 mi14:04:103:38:128:207:16
7:08
#14470
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi15445104931049316587(Top 62%)10908(Top 72%)10908(Top 532%)
10K6.21 mi3.10 mi14859+58610276+21710276+21714263(Top 54%)10030(Top 66%)10030(Top 489%)
15K9.32 mi3.11 mi15465-60610490-21410490-21416587(Top 62%)10908(Top 72%)10908(Top 532%)
20K12.43 mi3.11 mi15307+15810412+7810412+7814911(Top 56%)10237(Top 67%)10237(Top 499%)
Half13.11 mi0.68 mi15315-810410+210410+215962(Top 60%)10662(Top 70%)10662(Top 520%)
25K15.53 mi2.42 mi15379-64104101041015782(Top 59%)10456(Top 69%)10456(Top 510%)
30K18.64 mi3.11 mi15547-16810430-2010430-2016267(Top 61%)10590(Top 70%)10590(Top 516%)
20M20.00 mi1.36 mi15504+4310393+3710393+3715299(Top 57%)10114(Top 67%)10114(Top 493%)
21M21.00 mi1.00 mi15474+3010351+4210351+4215533(Top 58%)10142(Top 67%)10142(Top 494%)
35K21.75 mi0.75 mi15535-6110357-610357-616897(Top 63%)10646(Top 70%)10646(Top 519%)
23M23.00 mi1.25 mi15238+29710230+12710230+12710806(Top 41%)7883(Top 52%)7883(Top 384%)
24M24.00 mi1.00 mi15116+12210172+5810172+5812722(Top 48%)8737(Top 58%)8737(Top 426%)
40K24.85 mi0.85 mi14916+20010068+10410068+1049729(Top 37%)7207(Top 47%)7207(Top 351%)
25.2M25.20 mi0.35 mi14804+11210009+5910009+598679(Top 33%)6580(Top 43%)6580(Top 321%)
Finish26.22 mi1.02 mi14470+3349872+1379872+1376009(Top 23%)4948(Top 33%)4948(Top 241%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

16587

Males

10908

M50-54

10908

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

14263

Males

10030

M50-54

10030

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

16587

Males

10908

M50-54

10908

15K→20K

9.3 - 12.4 mi

Top 56%
×5stories
+106ft-86ft

Overall

14911

Males

10237

M50-54

10237

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

15962

Males

10662

M50-54

10662

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

15782

Males

10456

M50-54

10456

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

16267

Males

10590

M50-54

10590

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

15299

Males

10114

M50-54

10114

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15533

Males

10142

M50-54

10142

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

16897

Males

10646

M50-54

10646

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10806

Males

7883

M50-54

7883

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

12722

Males

8737

M50-54

8737

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9729

Males

7207

M50-54

7207

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8679

Males

6580

M50-54

6580

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6009

Males

4948

M50-54

4948

Passing Analysis

Category:
Athletes Passed
2570
Passed By
1595
Net Change
+975
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15445
5K → 10K68498+586#15445#14859
10K → 15K46652-606#14859#15465
15K → 20K25092+158#15465#15307
20K → Half3139-8#15307#15315
Half → 25K117181-64#15315#15379
25K → 30K129297-168#15379#15547
30K → 20M10360+43#15547#15504
20M → 21M10474+30#15504#15474
21M → 35K2687-61#15474#15535
35K → 23M2992+297#15535#15238
23M → 24M13311+122#15238#15116
24M → 40K2022+200#15116#14916
40K → 25.2M1120+112#14916#14804
25.2M → Finish3340+334#14804#14470
TOTALS25701595+975
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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