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BOSTON MARATHON 2024

Pengyu Lai

Bib: 4891•M

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 28%
Gender (Male)
#0 / 14578
Top 40%
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:06
Rank: #7753
Start → 5K
22:06 | 7:07/mi
10K· 6.21 mi
44:20
Rank: #7669 (+84)
5K → 10K
22:14 | 7:09/mi
15K· 9.32 mi
1:06:40
Rank: #7545 (+124)
10K → 15K
22:20 | 7:11/mi
20K· 12.43 mi
1:29:33
Rank: #7476 (+69)
15K → 20K
22:53 | 7:22/mi
Half· 13.11 mi
1:34:42
Rank: #7543 (-67)
20K → Half
5:09 | 7:33/mi
25K· 15.53 mi
1:53:10
Rank: #7492 (+51)
Half → 25K
18:28 | 7:37/mi
30K· 18.64 mi
2:17:29
Rank: #7289 (+203)
25K → 30K
24:19 | 7:50/mi
20M
2:28:25
Rank: #7208 (+81)
30K → 20M
10:56 | 8:03/mi
21M
2:36:58
Rank: #7054 (+154)
20M → 21M
8:33 | 8:33/mi
35K· 21.75 mi
2:42:41
Rank: #6939 (+115)
21M → 35K
5:43 | 7:38/mi
23M
2:53:07
Rank: #6886 (+53)
35K → 23M
10:26 | 8:20/mi
24M
3:01:19
Rank: #6859 (+27)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:08:30
Rank: #6860 (-1)
24M → 40K
7:11 | 8:24/mi
25.2M
3:12:07
Rank: #6960 (-100)
40K → 25.2M
3:37 | 10:29/mi
Finish· 26.22 mi
3:21:19
Rank: #7205 (-245)
25.2M → Finish
9:12 | 9:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:42
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:46:37
Pace8:08 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:4122:067:0722:06
7:07
-
10K
6.21 mi10:47:5544:207:0822:14
7:09
+0:02
15K
9.32 mi11:10:151:06:407:0922:20
7:11
+0:02
20K
12.43 mi11:33:081:29:337:1222:53
7:22
+0:11
Half
13.11 mi11:38:171:34:427:135:09
7:33
+0:11
25K
15.53 mi11:56:451:53:107:1718:28
7:37
+0:04
30K
18.64 mi12:21:042:17:297:2324:19
7:50
+0:13
20M
20.00 mi12:32:002:28:257:2510:56
8:03
+0:13
21M
21.00 mi12:40:332:36:587:288:33
8:33
+0:30
35K
21.75 mi12:46:162:42:417:295:43
7:38
-0:55
23M
23.00 mi12:56:422:53:077:3210:26
8:20
+0:42
24M
24.00 mi13:04:543:01:197:338:12
8:12
-0:08
40K
24.85 mi13:12:053:08:307:357:11
8:24
+0:12
25.2M
25.20 mi13:15:423:12:077:373:37
10:29
+2:05
Finish
26.22 mi13:24:543:21:197:419:12
9:02
-1:27

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

7:07 /mi

Average Pace

7:41 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:33

44% of race

Time at Steady Pace

1:12:47

36% of race

Time at Slower Pace

38:59

19% of race

Average Pace: 7:41 /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 mi10:25:4122:067:0722:06
7:07
#7753
10K
6.21 mi10:47:5544:207:0822:14
7:09
#7669
15K
9.32 mi11:10:151:06:407:0922:20
7:11
#7545
20K
12.43 mi11:33:081:29:337:1222:53
7:22
#7476
Half
13.11 mi11:38:171:34:427:135:09
7:33
#7543
25K
15.53 mi11:56:451:53:107:1718:28
7:37
#7492
30K
18.64 mi12:21:042:17:297:2324:19
7:50
#7289
20M
20.00 mi12:32:002:28:257:2510:56
8:03
#7208
21M
21.00 mi12:40:332:36:587:288:33
8:33
#7054
35K
21.75 mi12:46:162:42:417:295:43
7:38
#6939
23M
23.00 mi12:56:422:53:077:3210:26
8:20
#6886
24M
24.00 mi13:04:543:01:197:338:12
8:12
#6859
40K
24.85 mi13:12:053:08:307:357:11
8:24
#6860
25.2M
25.20 mi13:15:423:12:077:373:37
10:29
#6960
Finish
26.22 mi13:24:543:21:197:419:12
9:02
#7205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7753665966597392(Top 29%)6335(Top 43%)6335(Top 131%)
10K6.21 mi3.10 mi7669+846580+796580+797632(Top 30%)6539(Top 45%)6539(Top 135%)
15K9.32 mi3.11 mi7545+1246481+996481+997392(Top 29%)6335(Top 43%)6335(Top 131%)
20K12.43 mi3.11 mi7476+696402+796402+797381(Top 29%)6227(Top 43%)6227(Top 128%)
Half13.11 mi0.68 mi7543-676445-436445-439401(Top 37%)7354(Top 50%)7354(Top 152%)
25K15.53 mi2.42 mi7492+516378+676378+677725(Top 30%)6255(Top 43%)6255(Top 129%)
30K18.64 mi3.11 mi7289+2036186+1926186+1926872(Top 27%)5552(Top 38%)5552(Top 114%)
20M20.00 mi1.36 mi7208+816091+956091+957022(Top 27%)5452(Top 37%)5452(Top 112%)
21M21.00 mi1.00 mi7054+1545939+1525939+1526443(Top 25%)4942(Top 34%)4942(Top 102%)
35K21.75 mi0.75 mi6939+1155835+1045835+1045786(Top 23%)4565(Top 31%)4565(Top 94%)
23M23.00 mi1.25 mi6886+535753+825753+827528(Top 29%)5355(Top 37%)5355(Top 110%)
24M24.00 mi1.00 mi6859+275694+595694+597734(Top 30%)5358(Top 37%)5358(Top 110%)
40K24.85 mi0.85 mi6860-15654+405654+407833(Top 31%)5291(Top 36%)5291(Top 109%)
25.2M25.20 mi0.35 mi6960-1005693-395693-3912704(Top 50%)7707(Top 53%)7707(Top 159%)
Finish26.22 mi1.02 mi7205-2455797-1045797-10414317(Top 56%)8645(Top 59%)8645(Top 178%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

7392

Males

6335

M18-39

6335

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

7632

Males

6539

M18-39

6539

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

7392

Males

6335

M18-39

6335

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

7381

Males

6227

M18-39

6227

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9401

Males

7354

M18-39

7354

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

7725

Males

6255

M18-39

6255

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

6872

Males

5552

M18-39

5552

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7022

Males

5452

M18-39

5452

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6443

Males

4942

M18-39

4942

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

5786

Males

4565

M18-39

4565

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7528

Males

5355

M18-39

5355

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

7734

Males

5358

M18-39

5358

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

7833

Males

5291

M18-39

5291

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

12704

Males

7707

M18-39

7707

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

14317

Males

8645

M18-39

8645

Passing Analysis

Category:
Athletes Passed
2062
Passed By
1514
Net Change
+548
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7753
5K → 10K248164+84#7753#7669
10K → 15K21187+124#7669#7545
15K → 20K218149+69#7545#7476
20K → Half1481-67#7476#7543
Half → 25K196145+51#7543#7492
25K → 30K309106+203#7492#7289
30K → 20M14665+81#7289#7208
20M → 21M20046+154#7208#7054
21M → 35K13318+115#7054#6939
35K → 23M14289+53#6939#6886
23M → 24M11386+27#6886#6859
24M → 40K8990-1#6859#6860
40K → 25.2M13113-100#6860#6960
25.2M → Finish30275-245#6960#7205
TOTALS20621514+548
📊

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