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BOSTON MARATHON 2024

Lai Chun Tong

Bib: 7412•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 39%
Gender (Male)
#0 / 14578
Top 50%
Masters (Masters Men)
#0 / 9729
Top 40%
Division (M45-49)
#0 / 2218
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:20
Rank: #3606
Start → 5K
20:20 | 6:33/mi
10K· 6.21 mi
41:16
Rank: #4088 (-482)
5K → 10K
20:56 | 6:44/mi
15K· 9.32 mi
1:02:49
Rank: #4633 (-545)
10K → 15K
21:33 | 6:56/mi
20K· 12.43 mi
1:25:49
Rank: #5558 (-925)
15K → 20K
23:00 | 7:24/mi
Half· 13.11 mi
1:31:00
Rank: #5777 (-219)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:51:12
Rank: #6692 (-915)
Half → 25K
20:12 | 8:20/mi
30K· 18.64 mi
2:18:45
Rank: #7731 (-1039)
25K → 30K
27:33 | 8:52/mi
20M
2:31:05
Rank: #8127 (-396)
30K → 20M
12:20 | 9:05/mi
21M
2:41:25
Rank: #8499 (-372)
20M → 21M
10:20 | 10:20/mi
35K· 21.75 mi
2:50:01
Rank: #9209 (-710)
21M → 35K
8:36 | 11:30/mi
23M
3:03:50
Rank: #10078 (-869)
35K → 23M
13:49 | 11:02/mi
24M
3:12:35
Rank: #10076 (+2)
23M → 24M
8:45 | 8:45/mi
40K· 24.85 mi
3:20:07
Rank: #10053 (+23)
24M → 40K
7:32 | 8:49/mi
25.2M
3:23:31
Rank: #10051 (+2)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:31:27
Rank: #9905 (+146)
25.2M → Finish
7:56 | 7:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:00
Pace6:56 /mi
2nd Half
Distance13.11 mi
Time2:00:27
Pace9:11 /mi
📊Positive Split: 32.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0220:206:3320:20
6:33
-
10K
6.21 mi10:47:5841:166:3820:56
6:44
+0:11
15K
9.32 mi11:09:311:02:496:4421:33
6:56
+0:12
20K
12.43 mi11:32:311:25:496:5423:00
7:24
+0:28
Half
13.11 mi11:37:421:31:006:565:11
7:36
+0:12
25K
15.53 mi11:57:541:51:127:1020:12
8:20
+0:44
30K
18.64 mi12:25:272:18:457:2727:33
8:52
+0:32
20M
20.00 mi12:37:472:31:057:3312:20
9:05
+0:13
21M
21.00 mi12:48:072:41:257:4110:20
10:20
+1:15
35K
21.75 mi12:56:432:50:017:498:36
11:30
+1:10
23M
23.00 mi13:10:323:03:508:0013:49
11:02
-0:28
24M
24.00 mi13:19:173:12:358:018:45
8:45
-2:17
40K
24.85 mi13:26:493:20:078:037:32
8:49
+0:04
25.2M
25.20 mi13:30:133:23:318:053:24
9:52
+1:03
Finish
26.22 mi13:38:093:31:278:047:56
7:47
-2:05

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

6:33 /mi

Average Pace

8:04 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:56

47% of race

Time at Steady Pace

1:16:22

36% of race

Time at Slower Pace

36:09

17% 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 mi10:27:0220:206:3320:20
6:33
#3606
10K
6.21 mi10:47:5841:166:3820:56
6:44
#4088
15K
9.32 mi11:09:311:02:496:4421:33
6:56
#4633
20K
12.43 mi11:32:311:25:496:5423:00
7:24
#5558
Half
13.11 mi11:37:421:31:006:565:11
7:36
#5777
25K
15.53 mi11:57:541:51:127:1020:12
8:20
#6692
30K
18.64 mi12:25:272:18:457:2727:33
8:52
#7731
20M
20.00 mi12:37:472:31:057:3312:20
9:05
#8127
21M
21.00 mi12:48:072:41:257:4110:20
10:20
#8499
35K
21.75 mi12:56:432:50:017:498:36
11:30
#9209
23M
23.00 mi13:10:323:03:508:0013:49
11:02
#10078
24M
24.00 mi13:19:173:12:358:018:45
8:45
#10076
40K
24.85 mi13:26:493:20:078:037:32
8:49
#10053
25.2M
25.20 mi13:30:133:23:318:053:24
9:52
#10051
Finish
26.22 mi13:38:093:31:278:047:56
7:47
#9905
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3606342534255834(Top 23%)5267(Top 36%)5267(Top 237%)
10K6.21 mi3.10 mi4088-4823855-4303855-4304653(Top 18%)4331(Top 30%)4331(Top 195%)
15K9.32 mi3.11 mi4633-5454320-4654320-4655834(Top 23%)5267(Top 36%)5267(Top 237%)
20K12.43 mi3.11 mi5558-9255062-7425062-7427653(Top 30%)6393(Top 44%)6393(Top 288%)
Half13.11 mi0.68 mi5777-2195224-1625224-1629799(Top 38%)7582(Top 52%)7582(Top 342%)
25K15.53 mi2.42 mi6692-9155848-6245848-62412142(Top 48%)8517(Top 58%)8517(Top 384%)
30K18.64 mi3.11 mi7731-10396439-5916439-59112544(Top 49%)8488(Top 58%)8488(Top 383%)
20M20.00 mi1.36 mi8127-3966618-1796618-17912493(Top 49%)8179(Top 56%)8179(Top 369%)
21M21.00 mi1.00 mi8499-3726774-1566774-15614233(Top 56%)8767(Top 60%)8767(Top 395%)
35K21.75 mi0.75 mi9209-7107116-3427116-34220832(Top 82%)12041(Top 83%)12041(Top 543%)
23M23.00 mi1.25 mi10078-8697488-3727488-37218511(Top 72%)10810(Top 74%)10810(Top 487%)
24M24.00 mi1.00 mi10076+27448+407448+4010822(Top 42%)6956(Top 48%)6956(Top 314%)
40K24.85 mi0.85 mi10053+237387+617387+619931(Top 39%)6371(Top 44%)6371(Top 287%)
25.2M25.20 mi0.35 mi10051+27369+187369+1810317(Top 40%)6520(Top 45%)6520(Top 294%)
Finish26.22 mi1.02 mi9905+1467257+1127257+1127270(Top 28%)5021(Top 34%)5021(Top 226%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

5834

Males

5267

M45-49

5267

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4653

Males

4331

M45-49

4331

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

5834

Males

5267

M45-49

5267

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

7653

Males

6393

M45-49

6393

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

9799

Males

7582

M45-49

7582

Half→25K

13.1 - 15.5 mi

Top 48%
×4stories
+66ft-88ft

Overall

12142

Males

8517

M45-49

8517

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

12544

Males

8488

M45-49

8488

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

12493

Males

8179

M45-49

8179

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14233

Males

8767

M45-49

8767

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

20832

Males

12041

M45-49

12041

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

18511

Males

10810

M45-49

10810

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

10822

Males

6956

M45-49

6956

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

9931

Males

6371

M45-49

6371

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10317

Males

6520

M45-49

6520

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7270

Males

5021

M45-49

5021

Passing Analysis

Category:
Athletes Passed
696*
Passed By
6993
Net Change
-6299
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3606
5K → 10K39521-482#3606#4088
10K → 15K29574-545#4088#4633
15K → 20K35960-925#4633#5558
20K → Half1220-219#5558#5777
Half → 25K19934-915#5777#6692
25K → 30K461085-1039#6692#7731
30K → 20M39435-396#7731#8127
20M → 21M41413-372#8127#8499
21M → 35K11721-710#8499#9209
35K → 23M28895-869#9209#10078
23M → 24M9997+2#10078#10076
24M → 40K9875+23#10076#10053
40K → 25.2M4442+2#10053#10051
25.2M → Finish167*21+146#10051#9905
TOTALS696*6993-6299

* 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