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BOSTON MARATHON 2024

Ian Chubb

Bib: 24681 X GB

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Other)
#0 / 48
Race Day Weather
55°/45°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:05/mi
28:12
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:13/mi
56:49
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:51/mi
1:27:25
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:06/mi
1:58:49
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:59/mi
2:04:57
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
10:58/mi
2:31:32
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
11:16/mi
3:06:33
↑ 181↓ 1480.2%
138 ft elev
20M
12:09/mi
3:23:03
↑ 64↓ 500.2%
148 ft elev
21M
12:44/mi
3:35:47
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:34/mi
3:43:41
↑ 17↓ 861.7%
156 ft elev
23M
13:00/mi
3:59:57
↑ 23↓ 630.6%
116 ft elev
24M
10:54/mi
4:10:51
↓ 821.3%
34 ft elev
40K· 24.85 mi
12:50/mi
4:21:49
↓ 200.3%
20 ft elev
25.2M
13:06/mi
4:26:20
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:18/mi
4:36:50
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:04:579:32 /mi⚡ faster
2nd Half
2:31:5311:35 /mi+21.6%
Positive split — 21.6% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
28:129:053.11 mi28:12
9:05
-
10K
56:499:093.10 mi28:37
9:13
+0:08
15K
1:27:259:233.11 mi30:36
9:51
+0:38
20K
1:58:499:343.11 mi31:24
10:06
+0:15
Half(13.11 mi)
2:04:579:320.68 mi6:08
8:59
-1:07
25K
2:31:329:452.42 mi26:35
10:58
+1:59
30K
3:06:3310:003.11 mi35:01
11:16
+0:18
20M
3:23:0310:091.36 mi16:30
12:09
+0:53
21M
3:35:4710:171.00 mi12:44
12:44
+0:35
35K
3:43:4110:170.75 mi7:54
10:34
-2:10
23M
3:59:5710:261.25 mi16:16
13:00
+2:26
24M
4:10:5110:271.00 mi10:54
10:54
-2:06
40K
4:21:4910:320.85 mi10:58
12:50
+1:56
25.2M
4:26:2010:340.35 mi4:31
13:06
+0:16
Finish(26.22 mi)
4:36:5010:341.02 mi10:30
10:18
-2:48
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:59 /mi

Average Pace

10:34 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:04:57

45% of race

Time at Steady Pace

1:30:54

33% of race

Time at Slower Pace

1:00:59

22% of race

Average Pace: 10:33 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallXAge DivSeg. OverallSeg. XSeg. Age Div
5K3.11 mi203864646215644545
10K3.10 mi20444-5844+244+2205254444
15K3.11 mi20874-4304444215644545
20K3.11 mi20836+384444208114444
Half(13.11 mi)0.68 mi20747+894444182813939
25K2.42 mi20847-1004444214324444
30K3.11 mi20790+574444205694343
20M1.36 mi20865-7545-145-1215984444
21M1.00 mi20838+274545203074343
35K0.75 mi20746+924545187734141
23M1.25 mi20881-1354545225364545
24M1.00 mi20782+9944+144+1189913838
40K0.85 mi20847-6545-145-1219944242
25.2M0.35 mi20818+2944+144+1199544040
Finish(26.22 mi)1.02 mi20755+6345-145-1194624343

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21story building
+97ft-345ft

Overall

21564

X

45

Age Div

45

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

20525

X

44

Age Div

44

10K→15K

6.2 - 9.3 mi

Top 84%
×3story building
+67ft-78ft

Overall

21564

X

45

Age Div

45

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

20811

X

44

Age Div

44

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

18281

X

39

Age Div

39

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

21432

X

44

Age Div

44

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

20569

X

43

Age Div

43

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

21598

X

44

Age Div

44

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

20307

X

43

Age Div

43

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

18773

X

41

Age Div

41

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

22536

X

45

Age Div

45

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

18991

X

38

Age Div

38

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

21994

X

42

Age Div

42

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

19954

X

40

Age Div

40

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

19462

X

43

Age Div

43

Passing Analysis

Category:
Passed
1519
Passed By
1888
Net Change
-369
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20386
5K → 10K251309-58#20386#20444
10K → 15K94524-430#20444#20874
15K → 20K204166+38#20874#20836
20K → Half890+89#20836#20747
Half → 25K118218-100#20747#20847
25K → 30K197140+57#20847#20790
30K → 20M55130-75#20790#20865
20M → 21M9770+27#20865#20838
21M → 35K11422+92#20838#20746
35K → 23M38173-135#20746#20881
23M → 24M11112+99#20881#20782
24M → 40K3095-65#20782#20847
40K → 25.2M389+29#20847#20818
25.2M → Finish8320+63#20818#20755
TOTALS15191888-369

Passing Charts

Category:
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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