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BOSTON MARATHON 2023

Zhong Li

Bib: 29164•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
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
10:25/mi
32:23
↑ 97↓ 3451.5%
10K· 6.21 mi
10:58/mi
1:06:26
↑ 79↓ 1380.4%
15K· 9.32 mi
11:24/mi
1:41:51
↑ 67↓ 78
20K· 12.43 mi
12:47/mi
2:21:35
↑ 106↓ 860.1%
Half· 13.11 mi
11:55/mi
2:29:43
↑ 19↓ 370.5%
25K· 15.53 mi
12:41/mi
3:00:27
↑ 66↓ 880.2%
30K· 18.64 mi
13:44/mi
3:43:07
↑ 181↓ 1480.2%
20M
15:03/mi
4:03:34
↑ 64↓ 500.2%
21M
15:03/mi
4:18:36
↑ 106↓ 241.6%
35K· 21.75 mi
12:42/mi
4:28:06
↑ 17↓ 861.7%
23M
13:50/mi
4:45:25
↑ 23↓ 630.6%
24M
14:26/mi
4:59:51
↓ 821.3%
40K· 24.85 mi
13:18/mi
5:11:13
↓ 200.3%
25.2M
14:21/mi
5:16:10
↑ 13↓ 160.2%
Finish· 26.22 mi
12:21/mi
5:28:45
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:29:43
Pace11:25 /mi
2nd Half
Distance13.11 mi
Time2:59:02
Pace13:39 /mi
📊Positive Split: 19.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0932:2310:2532:23
10:25
-
10K
6.21 mi12:24:121:06:2610:4134:03
10:58
+0:33
15K
9.32 mi12:59:371:41:5110:5635:25
11:24
+0:26
20K
12.43 mi13:39:212:21:3511:2439:44
12:47
+1:23
Half
13.11 mi13:47:292:29:4311:258:08
11:55
-0:52
25K
15.53 mi14:18:133:00:2711:3730:44
12:41
+0:46
30K
18.64 mi15:00:533:43:0711:5842:40
13:44
+1:03
20M
20.00 mi15:21:204:03:3412:1120:27
15:03
+1:19
21M
21.00 mi15:36:224:18:3612:1915:02
15:03
0:00
35K
21.75 mi15:45:524:28:0612:209:30
12:42
-2:21
23M
23.00 mi16:03:114:45:2512:2517:19
13:50
+1:08
24M
24.00 mi16:17:374:59:5112:3014:26
14:26
+0:36
40K
24.85 mi16:28:595:11:1312:3111:22
13:18
-1:08
25.2M
25.20 mi16:33:565:16:1012:334:57
14:21
+1:03
Finish
26.22 mi16:46:315:28:4512:3312:35
12:21
-2:00

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

10:25 /mi

Average Pace

12:33 /mi

Slowest Pace

15:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:59

33% of race

Time at Steady Pace

1:43:55

32% of race

Time at Slower Pace

1:54:51

35% of race

Average Pace: 12:32 /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 mi11:50:0932:2310:2532:23
10:25
#24524
10K
6.21 mi12:24:121:06:2610:4134:03
10:58
#25075
15K
9.32 mi12:59:371:41:5110:5635:25
11:24
#25347
20K
12.43 mi13:39:212:21:3511:2439:44
12:47
#25697
Half
13.11 mi13:47:292:29:4311:258:08
11:55
#25708
25K
15.53 mi14:18:133:00:2711:3730:44
12:41
#25718
30K
18.64 mi15:00:533:43:0711:5842:40
13:44
#25765
20M
20.00 mi15:21:204:03:3412:1120:27
15:03
#25840
21M
21.00 mi15:36:224:18:3612:1915:02
15:03
#25847
35K
21.75 mi15:45:524:28:0612:209:30
12:42
#25836
23M
23.00 mi16:03:114:45:2512:2517:19
13:50
#25841
24M
24.00 mi16:17:374:59:5112:3014:26
14:26
#25870
40K
24.85 mi16:28:595:11:1312:3111:22
13:18
#25863
25.2M
25.20 mi16:33:565:16:1012:334:57
14:21
#25852
Finish
26.22 mi16:46:315:28:4512:3312:35
12:21
#25851
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi24524143331433325609(Top 96%)14775(Top 97%)14775(Top 659%)
10K6.21 mi3.10 mi25075-55114576-24314576-24325417(Top 95%)14717(Top 97%)14717(Top 657%)
15K9.32 mi3.11 mi25347-27214683-10714683-10725609(Top 96%)14775(Top 97%)14775(Top 659%)
20K12.43 mi3.11 mi25697-35014807-12414807-12426132(Top 98%)14977(Top 99%)14977(Top 668%)
Half13.11 mi0.68 mi25708-1114808-114808-125826(Top 97%)14834(Top 98%)14834(Top 662%)
25K15.53 mi2.42 mi25718-1014812-414812-425670(Top 96%)14763(Top 97%)14763(Top 659%)
30K18.64 mi3.11 mi25765-4714825-1314825-1325879(Top 97%)14817(Top 98%)14817(Top 661%)
20M20.00 mi1.36 mi25840-7514847-2214847-2226307(Top 99%)14997(Top 99%)14997(Top 669%)
21M21.00 mi1.00 mi25847-714853-614853-625747(Top 97%)14744(Top 97%)14744(Top 658%)
35K21.75 mi0.75 mi25836+1114848+514848+525344(Top 95%)14485(Top 95%)14485(Top 646%)
23M23.00 mi1.25 mi25841-514847+114847+125715(Top 97%)14684(Top 97%)14684(Top 655%)
24M24.00 mi1.00 mi25870-2914855-814855-826234(Top 99%)14944(Top 98%)14944(Top 667%)
40K24.85 mi0.85 mi25863+714849+614849+625190(Top 95%)14397(Top 95%)14397(Top 642%)
25.2M25.20 mi0.35 mi25852+1114841+814841+825278(Top 95%)14442(Top 95%)14442(Top 644%)
Finish26.22 mi1.02 mi25851+114837+414837+425554(Top 96%)14585(Top 96%)14585(Top 651%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21story building
+97ft-345ft

Overall

25609

Males

14775

M40-44

14775

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

25417

Males

14717

M40-44

14717

10K→15K

6.2 - 9.3 mi

Top 96%
×3story building
+67ft-78ft

Overall

25609

Males

14775

M40-44

14775

15K→20K

9.3 - 12.4 mi

Top 98%
×5story building
+106ft-86ft

Overall

26132

Males

14977

M40-44

14977

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

25826

Males

14834

M40-44

14834

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

25670

Males

14763

M40-44

14763

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25879

Males

14817

M40-44

14817

30K→20M

18.6 - 20.0 mi

Top 99%
×5story building
+64ft-50ft

Overall

26307

Males

14997

M40-44

14997

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

25747

Males

14744

M40-44

14744

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25344

Males

14485

M40-44

14485

35K→23M

21.8 - 23.0 mi

Top 97%
×5story building
+23ft-63ft

Overall

25715

Males

14684

M40-44

14684

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

26234

Males

14944

M40-44

14944

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

25190

Males

14397

M40-44

14397

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25278

Males

14442

M40-44

14442

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

25554

Males

14585

M40-44

14585

Passing Analysis

Category:
Athletes Passed
313
Passed By
1640
Net Change
-1327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24524
5K → 10K41592-551#24524#25075
10K → 15K32304-272#25075#25347
15K → 20K18368-350#25347#25697
20K → Half920-11#25697#25708
Half → 25K5565-10#25708#25718
25K → 30K4693-47#25718#25765
30K → 20M1085-75#25765#25840
20M → 21M1522-7#25840#25847
21M → 35K187+11#25847#25836
35K → 23M1621-5#25836#25841
23M → 24M938-29#25841#25870
24M → 40K169+7#25870#25863
40K → 25.2M154+11#25863#25852
25.2M → Finish1312+1#25852#25851
TOTALS3131640-1327
📊

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