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BOSTON MARATHON 2023

Chenyi Li

Bib: 32127•M

0:00
0:00
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:47
Rank: #23218
Start → 5K
30:47 | 9:54/mi
10K· 6.21 mi
1:00:54
Rank: #23165 (+53)
5K → 10K
30:07 | 9:42/mi
15K· 9.32 mi
1:31:16
Rank: #23131 (+34)
10K → 15K
30:22 | 9:46/mi
20K· 12.43 mi
2:03:54
Rank: #23359 (-228)
15K → 20K
32:38 | 10:30/mi
Half· 13.11 mi
2:11:23
Rank: #23458 (-99)
20K → Half
7:29 | 10:58/mi
25K· 15.53 mi
2:38:16
Rank: #23584 (-126)
Half → 25K
26:53 | 11:05/mi
30K· 18.64 mi
3:13:30
Rank: #23579 (+5)
25K → 30K
35:14 | 11:20/mi
20M
3:31:15
Rank: #23778 (-199)
30K → 20M
17:45 | 13:04/mi
21M
3:43:00
Rank: #23688 (+90)
20M → 21M
11:45 | 11:45/mi
35K· 21.75 mi
3:50:56
Rank: #23664 (+24)
21M → 35K
7:56 | 10:36/mi
23M
4:05:46
Rank: #23706 (-42)
35K → 23M
14:50 | 11:51/mi
24M
4:16:56
Rank: #23692 (+14)
23M → 24M
11:10 | 11:10/mi
40K· 24.85 mi
4:27:03
Rank: #23706 (-14)
24M → 40K
10:07 | 11:50/mi
25.2M
4:31:03
Rank: #23678 (+28)
40K → 25.2M
4:00 | 11:36/mi
Finish· 26.22 mi
4:41:34
Rank: #23656 (+22)
25.2M → Finish
10:31 | 10:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:23
Pace10:01 /mi
2nd Half
Distance13.11 mi
Time2:30:11
Pace11:27 /mi
📊Positive Split: 14.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:3830:479:5430:47
9:54
-
10K
6.21 mi12:21:451:00:549:4830:07
9:42
-0:12
15K
9.32 mi12:52:071:31:169:4830:22
9:46
+0:04
20K
12.43 mi13:24:452:03:549:5832:38
10:30
+0:44
Half
13.11 mi13:32:142:11:2310:017:29
10:58
+0:28
25K
15.53 mi13:59:072:38:1610:1126:53
11:05
+0:07
30K
18.64 mi14:34:213:13:3010:2335:14
11:20
+0:15
20M
20.00 mi14:52:063:31:1510:3417:45
13:04
+1:44
21M
21.00 mi15:03:513:43:0010:3711:45
11:45
-1:19
35K
21.75 mi15:11:473:50:5610:377:56
10:36
-1:09
23M
23.00 mi15:26:374:05:4610:4114:50
11:51
+1:15
24M
24.00 mi15:37:474:16:5610:4211:10
11:10
-0:41
40K
24.85 mi15:47:544:27:0310:4510:07
11:50
+0:40
25.2M
25.20 mi15:51:544:31:0310:454:00
11:36
-0:14
Finish
26.22 mi16:02:254:41:3410:4510:31
10:19
-1:17

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

9:42 /mi

Average Pace

10:45 /mi

Slowest Pace

13:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:21

51% of race

Time at Steady Pace

1:20:46

29% of race

Time at Slower Pace

58:27

21% of race

Average Pace: 10:44 /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 mi11:51:3830:479:5430:47
9:54
#23218
10K
6.21 mi12:21:451:00:549:4830:07
9:42
#23165
15K
9.32 mi12:52:071:31:169:4830:22
9:46
#23131
20K
12.43 mi13:24:452:03:549:5832:38
10:30
#23359
Half
13.11 mi13:32:142:11:2310:017:29
10:58
#23458
25K
15.53 mi13:59:072:38:1610:1126:53
11:05
#23584
30K
18.64 mi14:34:213:13:3010:2335:14
11:20
#23579
20M
20.00 mi14:52:063:31:1510:3417:45
13:04
#23778
21M
21.00 mi15:03:513:43:0010:3711:45
11:45
#23688
35K
21.75 mi15:11:473:50:5610:377:56
10:36
#23664
23M
23.00 mi15:26:374:05:4610:4114:50
11:51
#23706
24M
24.00 mi15:37:474:16:5610:4211:10
11:10
#23692
40K
24.85 mi15:47:544:27:0310:4510:07
11:50
#23706
25.2M
25.20 mi15:51:544:31:0310:454:00
11:36
#23678
Finish
26.22 mi16:02:254:41:3410:4510:31
10:19
#23656
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23218136891368922982(Top 86%)13628(Top 90%)13628(Top 258%)
10K6.21 mi3.10 mi23165+5313693-413693-423034(Top 87%)13663(Top 90%)13663(Top 259%)
15K9.32 mi3.11 mi23131+3413690+313690+322982(Top 86%)13628(Top 90%)13628(Top 258%)
20K12.43 mi3.11 mi23359-22813803-11313803-11323832(Top 90%)13999(Top 92%)13999(Top 265%)
Half13.11 mi0.68 mi23458-9913854-5113854-5124889(Top 93%)14427(Top 95%)14427(Top 273%)
25K15.53 mi2.42 mi23584-12613898-4413898-4424101(Top 91%)14071(Top 93%)14071(Top 266%)
30K18.64 mi3.11 mi23579+513871+2713871+2723632(Top 89%)13815(Top 91%)13815(Top 261%)
20M20.00 mi1.36 mi23778-19913954-8313954-8325231(Top 95%)14491(Top 95%)14491(Top 274%)
21M21.00 mi1.00 mi23688+9013901+5313901+5322320(Top 84%)13125(Top 86%)13125(Top 248%)
35K21.75 mi0.75 mi23664+2413886+1513886+1522581(Top 85%)13201(Top 87%)13201(Top 250%)
23M23.00 mi1.25 mi23706-4213896-1013896-1023780(Top 89%)13765(Top 91%)13765(Top 260%)
24M24.00 mi1.00 mi23692+1413877+1913877+1923336(Top 88%)13498(Top 89%)13498(Top 255%)
40K24.85 mi0.85 mi23706-1413876+113876+123671(Top 89%)13619(Top 90%)13619(Top 258%)
25.2M25.20 mi0.35 mi23678+2813859+1713859+1721757(Top 82%)12751(Top 84%)12751(Top 241%)
Finish26.22 mi1.02 mi23656+2213843+1613843+1622595(Top 85%)13134(Top 87%)13134(Top 249%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

22982

Males

13628

M18-39

13628

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23034

Males

13663

M18-39

13663

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

22982

Males

13628

M18-39

13628

15K→20K

9.3 - 12.4 mi

Top 90%
×5stories
+106ft-86ft

Overall

23832

Males

13999

M18-39

13999

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

24889

Males

14427

M18-39

14427

Half→25K

13.1 - 15.5 mi

Top 91%
×4stories
+66ft-88ft

Overall

24101

Males

14071

M18-39

14071

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

23632

Males

13815

M18-39

13815

30K→20M

18.6 - 20.0 mi

Top 95%
×5stories
+64ft-50ft

Overall

25231

Males

14491

M18-39

14491

20M→21M

20.0 - 21.0 mi

Top 84%
×8stories
+106ft-24ft

Overall

22320

Males

13125

M18-39

13125

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

22581

Males

13201

M18-39

13201

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

23780

Males

13765

M18-39

13765

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23336

Males

13498

M18-39

13498

24M→40K

24.0 - 24.9 mi

Top 89%
×1story
+6ft-20ft

Overall

23671

Males

13619

M18-39

13619

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21757

Males

12751

M18-39

12751

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

22595

Males

13134

M18-39

13134

Passing Analysis

Category:
Athletes Passed
937
Passed By
1375
Net Change
-438
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23218
5K → 10K247194+53#23218#23165
10K → 15K158124+34#23165#23131
15K → 20K56284-228#23131#23359
20K → Half5104-99#23359#23458
Half → 25K52178-126#23458#23584
25K → 30K10297+5#23584#23579
30K → 20M15214-199#23579#23778
20M → 21M988+90#23778#23688
21M → 35K3511+24#23688#23664
35K → 23M3274-42#23664#23706
23M → 24M4329+14#23706#23692
24M → 40K2438-14#23692#23706
40K → 25.2M302+28#23706#23678
25.2M → Finish4018+22#23678#23656
TOTALS9371375-438
📊

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