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BOSTON MARATHON 2023

Jianguo Liu

Bib: 9195•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 24%
Masters (Masters Men)
#0 / 9891
Top 11%
Division (M50-54)
#0 / 2052
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:31
Rank: #5747
Start → 5K
21:31 | 6:56/mi
10K· 6.21 mi
42:21
Rank: #5081 (+666)
5K → 10K
20:50 | 6:42/mi
15K· 9.32 mi
1:03:05
Rank: #4681 (+400)
10K → 15K
20:44 | 6:40/mi
20K· 12.43 mi
1:23:44
Rank: #4230 (+451)
15K → 20K
20:39 | 6:39/mi
Half· 13.11 mi
1:28:10
Rank: #4136 (+94)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:44:32
Rank: #4046 (+90)
Half → 25K
16:22 | 6:45/mi
30K· 18.64 mi
2:05:47
Rank: #3829 (+217)
25K → 30K
21:15 | 6:50/mi
20M
2:15:11
Rank: #3766 (+63)
30K → 20M
9:24 | 6:55/mi
21M
2:22:32
Rank: #3753 (+13)
20M → 21M
7:21 | 7:21/mi
35K· 21.75 mi
2:27:34
Rank: #3737 (+16)
21M → 35K
5:02 | 6:44/mi
23M
2:36:26
Rank: #3767 (-30)
35K → 23M
8:52 | 7:05/mi
24M
2:43:16
Rank: #3752 (+15)
23M → 24M
6:50 | 6:50/mi
40K· 24.85 mi
2:49:14
Rank: #3737 (+15)
24M → 40K
5:58 | 6:59/mi
25.2M
2:51:51
Rank: #3757 (-20)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
2:58:54
Rank: #3819 (-62)
25.2M → Finish
7:03 | 6:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:10
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:30:44
Pace6:55 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2221:316:5621:31
6:56
-
10K
6.21 mi11:08:1242:216:4920:50
6:42
-0:14
15K
9.32 mi11:28:561:03:056:4620:44
6:40
-0:02
20K
12.43 mi11:49:351:23:446:4420:39
6:39
-0:01
Half
13.11 mi11:54:011:28:106:444:26
6:30
-0:09
25K
15.53 mi12:10:231:44:326:4416:22
6:45
+0:15
30K
18.64 mi12:31:382:05:476:4521:15
6:50
+0:05
20M
20.00 mi12:41:022:15:116:469:24
6:55
+0:05
21M
21.00 mi12:48:232:22:326:477:21
7:21
+0:26
35K
21.75 mi12:53:252:27:346:475:02
6:44
-0:37
23M
23.00 mi13:02:172:36:266:488:52
7:05
+0:21
24M
24.00 mi13:09:072:43:166:486:50
6:50
-0:15
40K
24.85 mi13:15:052:49:146:495:58
6:59
+0:09
25.2M
25.20 mi13:17:422:51:516:492:37
7:35
+0:36
Finish
26.22 mi13:24:452:58:546:507:03
6:55
-0:40

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

6:30 /mi

Average Pace

6:50 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:56

94% of race

Time at Steady Pace

9:58

6% of race

Time at Slower Pace

0:00

0% 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 mi10:47:2221:316:5621:31
6:56
#5747
10K
6.21 mi11:08:1242:216:4920:50
6:42
#5081
15K
9.32 mi11:28:561:03:056:4620:44
6:40
#4681
20K
12.43 mi11:49:351:23:446:4420:39
6:39
#4230
Half
13.11 mi11:54:011:28:106:444:26
6:30
#4136
25K
15.53 mi12:10:231:44:326:4416:22
6:45
#4046
30K
18.64 mi12:31:382:05:476:4521:15
6:50
#3829
20M
20.00 mi12:41:022:15:116:469:24
6:55
#3766
21M
21.00 mi12:48:232:22:326:477:21
7:21
#3753
35K
21.75 mi12:53:252:27:346:475:02
6:44
#3737
23M
23.00 mi13:02:172:36:266:488:52
7:05
#3767
24M
24.00 mi13:09:072:43:166:486:50
6:50
#3752
40K
24.85 mi13:15:052:49:146:495:58
6:59
#3737
25.2M
25.20 mi13:17:422:51:516:492:37
7:35
#3757
Finish
26.22 mi13:24:452:58:546:507:03
6:55
#3819
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5747527652763868(Top 15%)3636(Top 24%)3636(Top 177%)
10K6.21 mi3.10 mi5081+6664708+5684708+5684373(Top 16%)4092(Top 27%)4092(Top 199%)
15K9.32 mi3.11 mi4681+4004362+3464362+3463868(Top 15%)3636(Top 24%)3636(Top 177%)
20K12.43 mi3.11 mi4230+4513965+3973965+3973160(Top 12%)3006(Top 20%)3006(Top 146%)
Half13.11 mi0.68 mi4136+943881+843881+842824(Top 11%)2708(Top 18%)2708(Top 132%)
25K15.53 mi2.42 mi4046+903803+783803+783750(Top 14%)3530(Top 23%)3530(Top 172%)
30K18.64 mi3.11 mi3829+2173611+1923611+1923261(Top 12%)3073(Top 20%)3073(Top 150%)
20M20.00 mi1.36 mi3766+633554+573554+573532(Top 13%)3297(Top 22%)3297(Top 161%)
21M21.00 mi1.00 mi3753+133538+163538+163870(Top 15%)3578(Top 24%)3578(Top 174%)
35K21.75 mi0.75 mi3737+163522+163522+163721(Top 14%)3438(Top 23%)3438(Top 168%)
23M23.00 mi1.25 mi3767-303548-263548-264195(Top 16%)3838(Top 25%)3838(Top 187%)
24M24.00 mi1.00 mi3752+153530+183530+183821(Top 14%)3493(Top 23%)3493(Top 170%)
40K24.85 mi0.85 mi3737+153513+173513+173716(Top 14%)3357(Top 22%)3357(Top 164%)
25.2M25.20 mi0.35 mi3757-203531-183531-184272(Top 16%)3742(Top 25%)3742(Top 182%)
Finish26.22 mi1.02 mi3819-623585-543585-544719(Top 18%)4074(Top 27%)4074(Top 199%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

3868

Males

3636

M50-54

3636

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4373

Males

4092

M50-54

4092

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

3868

Males

3636

M50-54

3636

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3160

Males

3006

M50-54

3006

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

2824

Males

2708

M50-54

2708

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3750

Males

3530

M50-54

3530

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3261

Males

3073

M50-54

3073

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3532

Males

3297

M50-54

3297

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

3870

Males

3578

M50-54

3578

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3721

Males

3438

M50-54

3438

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4195

Males

3838

M50-54

3838

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3821

Males

3493

M50-54

3493

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3716

Males

3357

M50-54

3357

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4272

Males

3742

M50-54

3742

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4719

Males

4074

M50-54

4074

Passing Analysis

Category:
Athletes Passed
2413
Passed By
485
Net Change
+1928
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5747
5K → 10K69226+666#5747#5081
10K → 15K41111+400#5081#4681
15K → 20K4543+451#4681#4230
20K → Half951+94#4230#4136
Half → 25K12232+90#4136#4046
25K → 30K24326+217#4046#3829
30K → 20M9027+63#3829#3766
20M → 21M6552+13#3766#3753
21M → 35K3317+16#3753#3737
35K → 23M5686-30#3737#3767
23M → 24M5035+15#3767#3752
24M → 40K5843+15#3752#3737
40K → 25.2M1434-20#3737#3757
25.2M → Finish3092-62#3757#3819
TOTALS2413485+1928
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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