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BOSTON MARATHON 2024

Yi Lok Lai

Bib: 9582•F

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 39%
Gender (Female)
#0 / 10924
Top 24%
Division (F18-39)
#0 / 4660
Top 40%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:26
Rank: #11140
Start → 5K
23:26 | 7:33/mi
10K· 6.21 mi
47:45
Rank: #11958 (-818)
5K → 10K
24:19 | 7:50/mi
15K· 9.32 mi
1:12:50
Rank: #12635 (-677)
10K → 15K
25:05 | 8:04/mi
20K· 12.43 mi
1:38:00
Rank: #12544 (+91)
15K → 20K
25:10 | 8:06/mi
Half· 13.11 mi
1:43:22
Rank: #12478 (+66)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
2:03:00
Rank: #12112 (+366)
Half → 25K
19:38 | 8:06/mi
30K· 18.64 mi
2:28:54
Rank: #11576 (+536)
25K → 30K
25:54 | 8:20/mi
20M
2:40:24
Rank: #11334 (+242)
30K → 20M
11:30 | 8:28/mi
21M
2:49:09
Rank: #10976 (+358)
20M → 21M
8:45 | 8:45/mi
35K· 21.75 mi
2:54:55
Rank: #10763 (+213)
21M → 35K
5:46 | 7:42/mi
23M
3:05:07
Rank: #10421 (+342)
35K → 23M
10:12 | 8:09/mi
24M
3:13:14
Rank: #10247 (+174)
23M → 24M
8:07 | 8:07/mi
40K· 24.85 mi
3:20:20
Rank: #10112 (+135)
24M → 40K
7:06 | 8:18/mi
25.2M
3:23:23
Rank: #10013 (+99)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:31:22
Rank: #9886 (+127)
25.2M → Finish
7:59 | 7:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:22
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:48:00
Pace8:14 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3023:267:3323:26
7:33
-
10K
6.21 mi11:19:4947:457:4124:19
7:50
+0:17
15K
9.32 mi11:44:541:12:507:4925:05
8:04
+0:14
20K
12.43 mi12:10:041:38:007:5325:10
8:06
+0:02
Half
13.11 mi12:15:261:43:227:535:22
7:52
-0:14
25K
15.53 mi12:35:042:03:007:5519:38
8:06
+0:14
30K
18.64 mi13:00:582:28:547:5925:54
8:20
+0:14
20M
20.00 mi13:12:282:40:248:0111:30
8:28
+0:08
21M
21.00 mi13:21:132:49:098:038:45
8:45
+0:17
35K
21.75 mi13:26:592:54:558:035:46
7:42
-1:03
23M
23.00 mi13:37:113:05:078:0310:12
8:09
+0:27
24M
24.00 mi13:45:183:13:148:038:07
8:07
-0:02
40K
24.85 mi13:52:243:20:208:047:06
8:18
+0:11
25.2M
25.20 mi13:55:273:23:238:043:03
8:51
+0:33
Finish
26.22 mi14:03:263:31:228:047:59
7:50
-1:01

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

7:33 /mi

Average Pace

8:04 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:10

77% of race

Time at Steady Pace

49:12

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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 mi10:55:3023:267:3323:26
7:33
#11140
10K
6.21 mi11:19:4947:457:4124:19
7:50
#11958
15K
9.32 mi11:44:541:12:507:4925:05
8:04
#12635
20K
12.43 mi12:10:041:38:007:5325:10
8:06
#12544
Half
13.11 mi12:15:261:43:227:535:22
7:52
#12478
25K
15.53 mi12:35:042:03:007:5519:38
8:06
#12112
30K
18.64 mi13:00:582:28:547:5925:54
8:20
#11576
20M
20.00 mi13:12:282:40:248:0111:30
8:28
#11334
21M
21.00 mi13:21:132:49:098:038:45
8:45
#10976
35K
21.75 mi13:26:592:54:558:035:46
7:42
#10763
23M
23.00 mi13:37:113:05:078:0310:12
8:09
#10421
24M
24.00 mi13:45:183:13:148:038:07
8:07
#10247
40K
24.85 mi13:52:243:20:208:047:06
8:18
#10112
25.2M
25.20 mi13:55:273:23:238:043:03
8:51
#10013
Finish
26.22 mi14:03:263:31:228:047:59
7:50
#9886
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi111402641264113933(Top 55%)4318(Top 40%)4318(Top 93%)
10K6.21 mi3.10 mi11958-8183147-5063147-50612886(Top 50%)3695(Top 34%)3695(Top 79%)
15K9.32 mi3.11 mi12635-6773538-3913538-39113933(Top 55%)4318(Top 40%)4318(Top 93%)
20K12.43 mi3.11 mi12544+913511+273511+2712526(Top 49%)3592(Top 33%)3592(Top 77%)
Half13.11 mi0.68 mi12478+663482+293482+2911811(Top 46%)3221(Top 29%)3221(Top 69%)
25K15.53 mi2.42 mi12112+3663324+1583324+15810799(Top 42%)2866(Top 26%)2866(Top 62%)
30K18.64 mi3.11 mi11576+5363130+1943130+1949754(Top 38%)2583(Top 24%)2583(Top 55%)
20M20.00 mi1.36 mi11334+2423055+753055+759254(Top 36%)2584(Top 24%)2584(Top 55%)
21M21.00 mi1.00 mi10976+3582922+1332922+1337419(Top 29%)1908(Top 17%)1908(Top 41%)
35K21.75 mi0.75 mi10763+2132849+732849+736169(Top 24%)1384(Top 13%)1384(Top 30%)
23M23.00 mi1.25 mi10421+3422740+1092740+1096546(Top 26%)1705(Top 16%)1705(Top 37%)
24M24.00 mi1.00 mi10247+1742698+422698+427320(Top 29%)2159(Top 20%)2159(Top 46%)
40K24.85 mi0.85 mi10112+1352671+272671+277391(Top 29%)2332(Top 21%)2332(Top 50%)
25.2M25.20 mi0.35 mi10013+992638+332638+335918(Top 23%)1693(Top 15%)1693(Top 36%)
Finish26.22 mi1.02 mi9886+1272613+252613+257567(Top 30%)2368(Top 22%)2368(Top 51%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

13933

Females

4318

F18-39

4318

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

12886

Females

3695

F18-39

3695

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

13933

Females

4318

F18-39

4318

15K→20K

9.3 - 12.4 mi

Top 49%
×5stories
+106ft-86ft

Overall

12526

Females

3592

F18-39

3592

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

11811

Females

3221

F18-39

3221

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

10799

Females

2866

F18-39

2866

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

9754

Females

2583

F18-39

2583

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

9254

Females

2584

F18-39

2584

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7419

Females

1908

F18-39

1908

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6169

Females

1384

F18-39

1384

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6546

Females

1705

F18-39

1705

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7320

Females

2159

F18-39

2159

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7391

Females

2332

F18-39

2332

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

5918

Females

1693

F18-39

1693

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

7567

Females

2368

F18-39

2368

Passing Analysis

Category:
Athletes Passed
3355*
Passed By
2101
Net Change
+1254
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11140
5K → 10K77895-818#11140#11958
10K → 15K72749-677#11958#12635
15K → 20K296205+91#12635#12544
20K → Half7711+66#12544#12478
Half → 25K42761+366#12478#12112
25K → 30K60266+536#12112#11576
30K → 20M27836+242#11576#11334
20M → 21M37113+358#11334#10976
21M → 35K2152+213#10976#10763
35K → 23M3497+342#10763#10421
23M → 24M19016+174#10421#10247
24M → 40K148*13+135#10247#10112
40K → 25.2M1045+99#10112#10013
25.2M → Finish149*22+127#10013#9886
TOTALS3355*2101+1254

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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