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BOSTON MARATHON 2024

Cara O'brien

Bib: 19819•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F45-49)
#0 / 1753
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
8:26/mi
26:13
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
52:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:41/mi
1:19:41
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:47:08
↑ 106↓ 860.1%
Half· 13.11 mi
8:33/mi
1:52:58
↑ 19↓ 370.5%
25K· 15.53 mi
8:57/mi
2:14:41
↑ 66↓ 880.2%
30K· 18.64 mi
10:04/mi
2:45:57
↑ 181↓ 1480.2%
20M
10:32/mi
3:00:16
↑ 64↓ 500.2%
21M
11:03/mi
3:11:19
↑ 106↓ 241.6%
35K· 21.75 mi
10:12/mi
3:18:57
↑ 17↓ 861.7%
23M
11:19/mi
3:33:07
↑ 23↓ 630.6%
24M
10:15/mi
3:43:22
↓ 821.3%
40K· 24.85 mi
11:01/mi
3:52:47
↓ 200.3%
25.2M
13:12/mi
3:57:20
↑ 13↓ 160.2%
Finish· 26.22 mi
10:11/mi
4:07:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:58
Pace8:37 /mi
2nd Half
Distance13.11 mi
Time2:14:45
Pace10:17 /mi
📊Positive Split: 19.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3726:138:2626:13
8:26
-
10K
6.21 mi11:46:0752:438:2926:30
8:32
+0:06
15K
9.32 mi12:13:051:19:418:3326:58
8:41
+0:09
20K
12.43 mi12:40:321:47:088:3727:27
8:50
+0:09
Half
13.11 mi12:46:221:52:588:375:50
8:33
-0:17
25K
15.53 mi13:08:052:14:418:4021:43
8:57
+0:24
30K
18.64 mi13:39:212:45:578:5431:16
10:04
+1:07
20M
20.00 mi13:53:403:00:169:0114:19
10:32
+0:28
21M
21.00 mi14:04:433:11:199:0711:03
11:03
+0:31
35K
21.75 mi14:12:213:18:579:097:38
10:12
-0:51
23M
23.00 mi14:26:313:33:079:1614:10
11:19
+1:07
24M
24.00 mi14:36:463:43:229:1810:15
10:15
-1:04
40K
24.85 mi14:46:113:52:479:229:25
11:01
+0:46
25.2M
25.20 mi14:50:443:57:209:254:33
13:12
+2:11
Finish
26.22 mi15:01:074:07:439:2710:23
10:11
-3:01

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

8:26 /mi

Average Pace

9:27 /mi

Slowest Pace

13:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:41

54% of race

Time at Steady Pace

1:13:51

30% of race

Time at Slower Pace

39:11

16% of race

Average Pace: 9:27 /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 mi11:19:3726:138:2626:13
8:26
#17439
10K
6.21 mi11:46:0752:438:2926:30
8:32
#17438
15K
9.32 mi12:13:051:19:418:3326:58
8:41
#17406
20K
12.43 mi12:40:321:47:088:3727:27
8:50
#17096
Half
13.11 mi12:46:221:52:588:375:50
8:33
#17021
25K
15.53 mi13:08:052:14:418:4021:43
8:57
#16689
30K
18.64 mi13:39:212:45:578:5431:16
10:04
#16899
20M
20.00 mi13:53:403:00:169:0114:19
10:32
#17061
21M
21.00 mi14:04:433:11:199:0711:03
11:03
#17040
35K
21.75 mi14:12:213:18:579:097:38
10:12
#17073
23M
23.00 mi14:26:313:33:079:1614:10
11:19
#17296
24M
24.00 mi14:36:463:43:229:1810:15
10:15
#17299
40K
24.85 mi14:46:113:52:479:229:25
11:01
#17318
25.2M
25.20 mi14:50:443:57:209:254:33
13:12
#17361
Finish
26.22 mi15:01:074:07:439:2710:23
10:11
#17389
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi174396431643117387(Top 68%)6367(Top 58%)6367(Top 363%)
10K6.21 mi3.10 mi17438+16413+186413+1817477(Top 68%)6414(Top 59%)6414(Top 366%)
15K9.32 mi3.11 mi17406+326380+336380+3317387(Top 68%)6367(Top 58%)6367(Top 363%)
20K12.43 mi3.11 mi17096+3106220+1606220+16016596(Top 65%)5955(Top 55%)5955(Top 340%)
Half13.11 mi0.68 mi17021+756189+316189+3116065(Top 63%)5674(Top 52%)5674(Top 324%)
25K15.53 mi2.42 mi16689+3326014+1756014+17515340(Top 60%)5364(Top 49%)5364(Top 306%)
30K18.64 mi3.11 mi16899-2106206-1926206-19217550(Top 69%)6819(Top 62%)6819(Top 389%)
20M20.00 mi1.36 mi17061-1626328-1226328-12218089(Top 71%)7249(Top 66%)7249(Top 414%)
21M21.00 mi1.00 mi17040+216349-216349-2116481(Top 65%)6590(Top 60%)6590(Top 376%)
35K21.75 mi0.75 mi17073-336385-366385-3617770(Top 70%)7211(Top 66%)7211(Top 411%)
23M23.00 mi1.25 mi17296-2236532-1476532-14719218(Top 75%)7994(Top 73%)7994(Top 456%)
24M24.00 mi1.00 mi17299-36559-276559-2717142(Top 67%)7029(Top 64%)7029(Top 401%)
40K24.85 mi0.85 mi17318-196604-456604-4518121(Top 71%)7553(Top 69%)7553(Top 431%)
25.2M25.20 mi0.35 mi17361-436645-416645-4120106(Top 79%)8565(Top 78%)8565(Top 489%)
Finish26.22 mi1.02 mi17389-286692-476692-4719056(Top 75%)7993(Top 73%)7993(Top 456%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

17387

Females

6367

F45-49

6367

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

17477

Females

6414

F45-49

6414

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

17387

Females

6367

F45-49

6367

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

16596

Females

5955

F45-49

5955

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16065

Females

5674

F45-49

5674

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15340

Females

5364

F45-49

5364

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

17550

Females

6819

F45-49

6819

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18089

Females

7249

F45-49

7249

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

16481

Females

6590

F45-49

6590

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

17770

Females

7211

F45-49

7211

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19218

Females

7994

F45-49

7994

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17142

Females

7029

F45-49

7029

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18121

Females

7553

F45-49

7553

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

20106

Females

8565

F45-49

8565

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19056

Females

7993

F45-49

7993

Passing Analysis

Category:
Athletes Passed
2133
Passed By
2083
Net Change
+50
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17439
5K → 10K283282+1#17439#17438
10K → 15K265233+32#17438#17406
15K → 20K422112+310#17406#17096
20K → Half849+75#17096#17021
Half → 25K38654+332#17021#16689
25K → 30K172382-210#16689#16899
30K → 20M76238-162#16899#17061
20M → 21M11190+21#17061#17040
21M → 35K5790-33#17040#17073
35K → 23M55278-223#17073#17296
23M → 24M7578-3#17296#17299
24M → 40K6382-19#17299#17318
40K → 25.2M2770-43#17318#17361
25.2M → Finish5785-28#17361#17389
TOTALS21332083+50
📊

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