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BOSTON MARATHON 2024

Derek Lai

Bib: 7110•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 12%
Gender (Male)
#0 / 14578
Top 19%
Masters (Masters Men)
#0 / 9729
Top 9%
Division (M45-49)
#0 / 2218
Top 11%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:16
Rank: #5996
Start → 5K
21:16 | 6:51/mi
10K· 6.21 mi
42:19
Rank: #5497 (+499)
5K → 10K
21:03 | 6:47/mi
15K· 9.32 mi
1:03:36
Rank: #5358 (+139)
10K → 15K
21:17 | 6:51/mi
20K· 12.43 mi
1:24:59
Rank: #5091 (+267)
15K → 20K
21:23 | 6:53/mi
Half· 13.11 mi
1:29:36
Rank: #5030 (+61)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:46:16
Rank: #4653 (+377)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:08:13
Rank: #4271 (+382)
25K → 30K
21:57 | 7:04/mi
20M
2:17:51
Rank: #4045 (+226)
30K → 20M
9:38 | 7:05/mi
21M
2:25:23
Rank: #3853 (+192)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:30:32
Rank: #3755 (+98)
21M → 35K
5:09 | 6:53/mi
23M
2:39:10
Rank: #3516 (+239)
35K → 23M
8:38 | 6:54/mi
24M
2:45:43
Rank: #3311 (+205)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:51:26
Rank: #3164 (+147)
24M → 40K
5:43 | 6:41/mi
25.2M
2:53:57
Rank: #3082 (+82)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
3:00:33
Rank: #2962 (+120)
25.2M → Finish
6:36 | 6:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:36
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:30:57
Pace6:56 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:5021:166:5121:16
6:51
-
10K
6.21 mi10:48:5342:196:4921:03
6:47
-0:04
15K
9.32 mi11:10:101:03:366:4921:17
6:51
+0:04
20K
12.43 mi11:31:331:24:596:5021:23
6:53
+0:02
Half
13.11 mi11:36:101:29:366:504:37
6:46
-0:07
25K
15.53 mi11:52:501:46:166:5016:40
6:52
+0:06
30K
18.64 mi12:14:472:08:136:5321:57
7:04
+0:12
20M
20.00 mi12:24:252:17:516:549:38
7:05
+0:01
21M
21.00 mi12:31:572:25:236:557:32
7:32
+0:27
35K
21.75 mi12:37:062:30:326:555:09
6:53
-0:39
23M
23.00 mi12:45:442:39:106:558:38
6:54
+0:01
24M
24.00 mi12:52:172:45:436:546:33
6:33
-0:21
40K
24.85 mi12:58:002:51:266:545:43
6:41
+0:08
25.2M
25.20 mi13:00:312:53:576:542:31
7:18
+0:37
Finish
26.22 mi13:07:073:00:336:536:36
6:29
-0:49

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

6:29 /mi

Average Pace

6:53 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:30

94% of race

Time at Steady Pace

10:03

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:53 /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 mi10:27:5021:166:5121:16
6:51
#5996
10K
6.21 mi10:48:5342:196:4921:03
6:47
#5497
15K
9.32 mi11:10:101:03:366:4921:17
6:51
#5358
20K
12.43 mi11:31:331:24:596:5021:23
6:53
#5091
Half
13.11 mi11:36:101:29:366:504:37
6:46
#5030
25K
15.53 mi11:52:501:46:166:5016:40
6:52
#4653
30K
18.64 mi12:14:472:08:136:5321:57
7:04
#4271
20M
20.00 mi12:24:252:17:516:549:38
7:05
#4045
21M
21.00 mi12:31:572:25:236:557:32
7:32
#3853
35K
21.75 mi12:37:062:30:326:555:09
6:53
#3755
23M
23.00 mi12:45:442:39:106:558:38
6:54
#3516
24M
24.00 mi12:52:172:45:436:546:33
6:33
#3311
40K
24.85 mi12:58:002:51:266:545:43
6:41
#3164
25.2M
25.20 mi13:00:312:53:576:542:31
7:18
#3082
Finish
26.22 mi13:07:073:00:336:536:36
6:29
#2962
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5996544254425177(Top 20%)4743(Top 33%)4743(Top 214%)
10K6.21 mi3.10 mi5497+4995036+4065036+4064944(Top 19%)4580(Top 31%)4580(Top 206%)
15K9.32 mi3.11 mi5358+1394931+1054931+1055177(Top 20%)4743(Top 33%)4743(Top 214%)
20K12.43 mi3.11 mi5091+2674705+2264705+2264487(Top 18%)4146(Top 28%)4146(Top 187%)
Half13.11 mi0.68 mi5030+614650+554650+554206(Top 16%)3910(Top 27%)3910(Top 176%)
25K15.53 mi2.42 mi4653+3774312+3384312+3383625(Top 14%)3375(Top 23%)3375(Top 152%)
30K18.64 mi3.11 mi4271+3823966+3463966+3463162(Top 12%)2924(Top 20%)2924(Top 132%)
20M20.00 mi1.36 mi4045+2263753+2133753+2132722(Top 11%)2512(Top 17%)2512(Top 113%)
21M21.00 mi1.00 mi3853+1923582+1713582+1712601(Top 10%)2366(Top 16%)2366(Top 107%)
35K21.75 mi0.75 mi3755+983490+923490+922602(Top 10%)2367(Top 16%)2367(Top 107%)
23M23.00 mi1.25 mi3516+2393265+2253265+2251603(Top 6%)1493(Top 10%)1493(Top 67%)
24M24.00 mi1.00 mi3311+2053083+1823083+1821064(Top 4%)995(Top 7%)995(Top 45%)
40K24.85 mi0.85 mi3164+1472945+1382945+1381069(Top 4%)993(Top 7%)993(Top 45%)
25.2M25.20 mi0.35 mi3082+822871+742871+741054(Top 4%)975(Top 7%)975(Top 44%)
Finish26.22 mi1.02 mi2962+1202758+1132758+1131339(Top 5%)1219(Top 8%)1219(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5177

Males

4743

M45-49

4743

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4944

Males

4580

M45-49

4580

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5177

Males

4743

M45-49

4743

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4487

Males

4146

M45-49

4146

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4206

Males

3910

M45-49

3910

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3625

Males

3375

M45-49

3375

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3162

Males

2924

M45-49

2924

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2722

Males

2512

M45-49

2512

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2601

Males

2366

M45-49

2366

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2602

Males

2367

M45-49

2367

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1603

Males

1493

M45-49

1493

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1064

Males

995

M45-49

995

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1069

Males

993

M45-49

993

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1054

Males

975

M45-49

975

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1339

Males

1219

M45-49

1219

Passing Analysis

Category:
Athletes Passed
3257
Passed By
223
Net Change
+3034
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5996
5K → 10K52930+499#5996#5497
10K → 15K20768+139#5497#5358
15K → 20K30538+267#5358#5091
20K → Half654+61#5091#5030
Half → 25K39518+377#5030#4653
25K → 30K41028+382#4653#4271
30K → 20M23610+226#4271#4045
20M → 21M20311+192#4045#3853
21M → 35K1057+98#3853#3755
35K → 23M2445+239#3755#3516
23M → 24M2050+205#3516#3311
24M → 40K1481+147#3311#3164
40K → 25.2M831+82#3164#3082
25.2M → Finish1222+120#3082#2962
TOTALS3257223+3034
📊

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