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BOSTON MARATHON 2023

Liang Zhao

Bib: 8577•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 21%
Masters (Masters Men)
#0 / 9891
Top 9%
Division (M50-54)
#0 / 2052
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:41
Rank: #3293
Start → 5K
20:41 | 6:39/mi
10K· 6.21 mi
40:55
Rank: #3047 (+246)
5K → 10K
20:14 | 6:31/mi
15K· 9.32 mi
1:01:29
Rank: #3183 (-136)
10K → 15K
20:34 | 6:37/mi
20K· 12.43 mi
1:22:09
Rank: #3145 (+38)
15K → 20K
20:40 | 6:39/mi
Half· 13.11 mi
1:26:41
Rank: #3169 (-24)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:42:47
Rank: #3112 (+57)
Half → 25K
16:06 | 6:38/mi
30K· 18.64 mi
2:04:39
Rank: #3343 (-231)
25K → 30K
21:52 | 7:02/mi
20M
2:14:14
Rank: #3383 (-40)
30K → 20M
9:35 | 7:03/mi
21M
2:21:45
Rank: #3451 (-68)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:26:52
Rank: #3479 (-28)
21M → 35K
5:07 | 6:50/mi
23M
2:35:35
Rank: #3451 (+28)
35K → 23M
8:43 | 6:58/mi
24M
2:42:11
Rank: #3379 (+72)
23M → 24M
6:36 | 6:36/mi
40K· 24.85 mi
2:47:54
Rank: #3309 (+70)
24M → 40K
5:43 | 6:41/mi
25.2M
2:50:20
Rank: #3264 (+45)
40K → 25.2M
2:26 | 7:04/mi
Finish· 26.22 mi
2:57:32
Rank: #3338 (-74)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:41
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:30:51
Pace6:56 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:0420:416:3920:41
6:39
-
10K
6.21 mi11:06:1840:556:3520:14
6:31
-0:08
15K
9.32 mi11:26:521:01:296:3620:34
6:37
+0:06
20K
12.43 mi11:47:321:22:096:3720:40
6:39
+0:02
Half
13.11 mi11:52:041:26:416:374:32
6:39
0:00
25K
15.53 mi12:08:101:42:476:3716:06
6:38
-0:01
30K
18.64 mi12:30:022:04:396:4121:52
7:02
+0:24
20M
20.00 mi12:39:372:14:146:439:35
7:03
+0:01
21M
21.00 mi12:47:082:21:456:457:31
7:31
+0:28
35K
21.75 mi12:52:152:26:526:455:07
6:50
-0:41
23M
23.00 mi13:00:582:35:356:468:43
6:58
+0:08
24M
24.00 mi13:07:342:42:116:456:36
6:36
-0:22
40K
24.85 mi13:13:172:47:546:455:43
6:41
+0:05
25.2M
25.20 mi13:15:432:50:206:462:26
7:04
+0:23
Finish
26.22 mi13:22:552:57:326:477:12
7:04
0:00

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

6:47 /mi

Slowest Pace

7:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:01

96% of race

Time at Steady Pace

7:31

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi10:46:0420:416:3920:41
6:39
#3293
10K
6.21 mi11:06:1840:556:3520:14
6:31
#3047
15K
9.32 mi11:26:521:01:296:3620:34
6:37
#3183
20K
12.43 mi11:47:321:22:096:3720:40
6:39
#3145
Half
13.11 mi11:52:041:26:416:374:32
6:39
#3169
25K
15.53 mi12:08:101:42:476:3716:06
6:38
#3112
30K
18.64 mi12:30:022:04:396:4121:52
7:02
#3343
20M
20.00 mi12:39:372:14:146:439:35
7:03
#3383
21M
21.00 mi12:47:082:21:456:457:31
7:31
#3451
35K
21.75 mi12:52:152:26:526:455:07
6:50
#3479
23M
23.00 mi13:00:582:35:356:468:43
6:58
#3451
24M
24.00 mi13:07:342:42:116:456:36
6:36
#3379
40K
24.85 mi13:13:172:47:546:455:43
6:41
#3309
25.2M
25.20 mi13:15:432:50:206:462:26
7:04
#3264
Finish
26.22 mi13:22:552:57:326:477:12
7:04
#3338
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi3293311131113450(Top 13%)3272(Top 22%)3272(Top 159%)
10K6.21 mi3.10 mi3047+2462902+2092902+2092884(Top 11%)2756(Top 18%)2756(Top 134%)
15K9.32 mi3.11 mi3183-1363030-1283030-1283450(Top 13%)3272(Top 22%)3272(Top 159%)
20K12.43 mi3.11 mi3145+382994+362994+363175(Top 12%)3017(Top 20%)3017(Top 147%)
Half13.11 mi0.68 mi3169-243019-253019-253939(Top 15%)3692(Top 24%)3692(Top 180%)
25K15.53 mi2.42 mi3112+572966+532966+532953(Top 11%)2820(Top 19%)2820(Top 137%)
30K18.64 mi3.11 mi3343-2313172-2063172-2064583(Top 17%)4242(Top 28%)4242(Top 207%)
20M20.00 mi1.36 mi3383-403205-333205-334311(Top 16%)3971(Top 26%)3971(Top 194%)
21M21.00 mi1.00 mi3451-683267-623267-624628(Top 17%)4194(Top 28%)4194(Top 204%)
35K21.75 mi0.75 mi3479-283296-293296-294389(Top 16%)4007(Top 26%)4007(Top 195%)
23M23.00 mi1.25 mi3451+283263+333263+333572(Top 13%)3311(Top 22%)3311(Top 161%)
24M24.00 mi1.00 mi3379+723197+663197+662572(Top 10%)2400(Top 16%)2400(Top 117%)
40K24.85 mi0.85 mi3309+703130+673130+672297(Top 9%)2135(Top 14%)2135(Top 104%)
25.2M25.20 mi0.35 mi3264+453087+433087+432033(Top 8%)1890(Top 12%)1890(Top 92%)
Finish26.22 mi1.02 mi3338-743153-663153-665568(Top 21%)4622(Top 30%)4622(Top 225%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3450

Males

3272

M50-54

3272

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2884

Males

2756

M50-54

2756

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3450

Males

3272

M50-54

3272

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3175

Males

3017

M50-54

3017

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3939

Males

3692

M50-54

3692

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

2953

Males

2820

M50-54

2820

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4583

Males

4242

M50-54

4242

30K→20M

18.6 - 20.0 mi

Top 16%
×5stories
+64ft-50ft

Overall

4311

Males

3971

M50-54

3971

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4628

Males

4194

M50-54

4194

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4389

Males

4007

M50-54

4007

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3572

Males

3311

M50-54

3311

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2572

Males

2400

M50-54

2400

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2297

Males

2135

M50-54

2135

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2033

Males

1890

M50-54

1890

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5568

Males

4622

M50-54

4622

Passing Analysis

Category:
Athletes Passed
1010
Passed By
1055
Net Change
-45
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3293
5K → 10K31064+246#3293#3047
10K → 15K39175-136#3047#3183
15K → 20K11375+38#3183#3145
20K → Half1135-24#3145#3169
Half → 25K8326+57#3169#3112
25K → 30K35266-231#3112#3343
30K → 20M4484-40#3343#3383
20M → 21M40108-68#3383#3451
21M → 35K2553-28#3451#3479
35K → 23M6941+28#3479#3451
23M → 24M808+72#3451#3379
24M → 40K8313+70#3379#3309
40K → 25.2M505+45#3309#3264
25.2M → Finish28102-74#3264#3338
TOTALS10101055-45
📊

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