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BOSTON MARATHON 2024

James Cosby

Bib: 29279•M

MD

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:08/mi
28:22
↑ 97↓ 3451.5%
10K· 6.21 mi
9:07/mi
56:43
↑ 79↓ 1380.4%
15K· 9.32 mi
9:53/mi
1:27:24
↑ 67↓ 78
20K· 12.43 mi
11:50/mi
2:04:11
↑ 106↓ 860.1%
Half· 13.11 mi
11:05/mi
2:11:45
↑ 19↓ 370.5%
25K· 15.53 mi
11:59/mi
2:40:49
↑ 66↓ 880.2%
30K· 18.64 mi
12:42/mi
3:20:15
↑ 181↓ 1480.2%
20M
12:12/mi
3:36:50
↑ 64↓ 500.2%
21M
15:06/mi
3:51:56
↑ 106↓ 241.6%
35K· 21.75 mi
14:38/mi
4:02:53
↑ 17↓ 861.7%
23M
13:07/mi
4:19:18
↑ 23↓ 630.6%
24M
12:45/mi
4:32:03
↓ 821.3%
40K· 24.85 mi
12:53/mi
4:43:04
↓ 200.3%
25.2M
15:11/mi
4:48:18
↑ 13↓ 160.2%
Finish· 26.22 mi
10:33/mi
4:59:03
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:45
Pace10:03 /mi
2nd Half
Distance13.11 mi
Time2:47:18
Pace12:46 /mi
📊Positive Split: 27.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1228:229:0828:22
9:08
-
10K
6.21 mi12:18:3356:439:0828:21
9:07
-0:01
15K
9.32 mi12:49:141:27:249:2330:41
9:53
+0:46
20K
12.43 mi13:26:012:04:1110:0036:47
11:50
+1:57
Half
13.11 mi13:33:352:11:4510:037:34
11:05
-0:45
25K
15.53 mi14:02:392:40:4910:2129:04
11:59
+0:54
30K
18.64 mi14:42:053:20:1510:4539:26
12:42
+0:43
20M
20.00 mi14:58:403:36:5010:5016:35
12:12
-0:30
21M
21.00 mi15:13:463:51:5611:0315:06
15:06
+2:54
35K
21.75 mi15:24:434:02:5311:1010:57
14:38
-0:28
23M
23.00 mi15:41:084:19:1811:1616:25
13:07
-1:31
24M
24.00 mi15:53:534:32:0311:2012:45
12:45
-0:22
40K
24.85 mi16:04:544:43:0411:2311:01
12:53
+0:08
25.2M
25.20 mi16:10:084:48:1811:265:14
15:11
+2:18
Finish
26.22 mi16:20:534:59:0311:2510:45
10:33
-4:38

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

9:07 /mi

Average Pace

11:25 /mi

Slowest Pace

15:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:43

35% of race

Time at Steady Pace

2:42:03

54% of race

Time at Slower Pace

31:17

10% of race

Average Pace: 11:24 /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 mi11:50:1228:229:0828:22
9:08
#20589
10K
6.21 mi12:18:3356:439:0828:21
9:07
#20372
15K
9.32 mi12:49:141:27:249:2330:41
9:53
#20867
20K
12.43 mi13:26:012:04:1110:0036:47
11:50
#21946
Half
13.11 mi13:33:352:11:4510:037:34
11:05
#22052
25K
15.53 mi14:02:392:40:4910:2129:04
11:59
#22309
30K
18.64 mi14:42:053:20:1510:4539:26
12:42
#22465
20M
20.00 mi14:58:403:36:5010:5016:35
12:12
#22411
21M
21.00 mi15:13:463:51:5611:0315:06
15:06
#22536
35K
21.75 mi15:24:434:02:5311:1010:57
14:38
#22708
23M
23.00 mi15:41:084:19:1811:1616:25
13:07
#22725
24M
24.00 mi15:53:534:32:0311:2012:45
12:45
#22727
40K
24.85 mi16:04:544:43:0411:2311:01
12:53
#22732
25.2M
25.20 mi16:10:084:48:1811:265:14
15:11
#22760
Finish
26.22 mi16:20:534:59:0311:2510:45
10:33
#22703
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20589123491234921631(Top 85%)12916(Top 89%)12916(Top 266%)
10K6.21 mi3.10 mi20372+21712271+7812271+7820261(Top 79%)12251(Top 84%)12251(Top 253%)
15K9.32 mi3.11 mi20867-49512532-26112532-26121631(Top 85%)12916(Top 89%)12916(Top 266%)
20K12.43 mi3.11 mi21946-107913029-49713029-49723802(Top 93%)13857(Top 95%)13857(Top 286%)
Half13.11 mi0.68 mi22052-10613076-4713076-4723657(Top 93%)13747(Top 94%)13747(Top 284%)
25K15.53 mi2.42 mi22309-25713184-10813184-10823138(Top 91%)13483(Top 92%)13483(Top 278%)
30K18.64 mi3.11 mi22465-15613215-3113215-3122899(Top 90%)13249(Top 91%)13249(Top 273%)
20M20.00 mi1.36 mi22411+5413172+4313172+4321712(Top 85%)12557(Top 86%)12557(Top 259%)
21M21.00 mi1.00 mi22536-12513216-4413216-4423685(Top 93%)13516(Top 93%)13516(Top 279%)
35K21.75 mi0.75 mi22708-17213273-5713273-5724712(Top 97%)14040(Top 96%)14040(Top 290%)
23M23.00 mi1.25 mi22725-1713268+513268+522735(Top 89%)12969(Top 89%)12969(Top 267%)
24M24.00 mi1.00 mi22727-213257+1113257+1122708(Top 89%)12902(Top 89%)12902(Top 266%)
40K24.85 mi0.85 mi22732-513246+1113246+1122104(Top 87%)12550(Top 86%)12550(Top 259%)
25.2M25.20 mi0.35 mi22760-2813257-1113257-1123224(Top 91%)13154(Top 90%)13154(Top 271%)
Finish26.22 mi1.02 mi22703+5713221+3613221+3620180(Top 79%)11563(Top 79%)11563(Top 238%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

21631

Males

12916

M18-39

12916

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

20261

Males

12251

M18-39

12251

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

21631

Males

12916

M18-39

12916

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

23802

Males

13857

M18-39

13857

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

23657

Males

13747

M18-39

13747

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

23138

Males

13483

M18-39

13483

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

22899

Males

13249

M18-39

13249

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

21712

Males

12557

M18-39

12557

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

23685

Males

13516

M18-39

13516

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

24712

Males

14040

M18-39

14040

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

22735

Males

12969

M18-39

12969

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

22708

Males

12902

M18-39

12902

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

22104

Males

12550

M18-39

12550

40K→25.2M

24.9 - 25.2 mi

Top 91%
×1story
+13ft-16ft

Overall

23224

Males

13154

M18-39

13154

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

20180

Males

11563

M18-39

11563

Passing Analysis

Category:
Athletes Passed
1030
Passed By
3144
Net Change
-2114
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20589
5K → 10K395178+217#20589#20372
10K → 15K84579-495#20372#20867
15K → 20K171096-1079#20867#21946
20K → Half9115-106#21946#22052
Half → 25K60317-257#22052#22309
25K → 30K102258-156#22309#22465
30K → 20M9945+54#22465#22411
20M → 21M27152-125#22411#22536
21M → 35K8180-172#22536#22708
35K → 23M5269-17#22708#22725
23M → 24M5052-2#22725#22727
24M → 40K4247-5#22727#22732
40K → 25.2M1745-28#22732#22760
25.2M → Finish6811+57#22760#22703
TOTALS10303144-2114
📊

Passing Visuals

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