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BOSTON MARATHON 2024

Brianna O'Brien

Bib: 29111•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:22
Rank: #20575
Start → 5K
28:22 | 9:08/mi
10K· 6.21 mi
57:14
Rank: #20665 (-90)
5K → 10K
28:52 | 9:17/mi
15K· 9.32 mi
1:25:18
Rank: #20153 (+512)
10K → 15K
28:04 | 9:02/mi
20K· 12.43 mi
1:53:41
Rank: #19545 (+608)
15K → 20K
28:23 | 9:08/mi
Half· 13.11 mi
1:59:49
Rank: #19496 (+49)
20K → Half
6:08 | 8:59/mi
25K· 15.53 mi
2:23:22
Rank: #19267 (+229)
Half → 25K
23:33 | 9:43/mi
30K· 18.64 mi
2:53:25
Rank: #18662 (+605)
25K → 30K
30:03 | 9:40/mi
20M
3:06:27
Rank: #18383 (+279)
30K → 20M
13:02 | 9:35/mi
21M
3:16:41
Rank: #18119 (+264)
20M → 21M
10:14 | 10:14/mi
35K· 21.75 mi
3:23:25
Rank: #17937 (+182)
21M → 35K
6:44 | 9:00/mi
23M
3:35:15
Rank: #17637 (+300)
35K → 23M
11:50 | 9:27/mi
24M
3:44:29
Rank: #17476 (+161)
23M → 24M
9:14 | 9:14/mi
40K· 24.85 mi
3:51:58
Rank: #17198 (+278)
24M → 40K
7:29 | 8:45/mi
25.2M
3:55:23
Rank: #17078 (+120)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
4:03:44
Rank: #16815 (+263)
25.2M → Finish
8:21 | 8:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:49
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:03:55
Pace9:27 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2328:229:0828:22
9:08
-
10K
6.21 mi12:20:1557:149:1328:52
9:17
+0:09
15K
9.32 mi12:48:191:25:189:0928:04
9:02
-0:15
20K
12.43 mi13:16:421:53:419:0928:23
9:08
+0:06
Half
13.11 mi13:22:501:59:499:086:08
8:59
-0:09
25K
15.53 mi13:46:232:23:229:1423:33
9:43
+0:44
30K
18.64 mi14:16:262:53:259:1830:03
9:40
-0:03
20M
20.00 mi14:29:283:06:279:1913:02
9:35
-0:05
21M
21.00 mi14:39:423:16:419:2210:14
10:14
+0:39
35K
21.75 mi14:46:263:23:259:216:44
9:00
-1:14
23M
23.00 mi14:58:163:35:159:2211:50
9:27
+0:27
24M
24.00 mi15:07:303:44:299:219:14
9:14
-0:13
40K
24.85 mi15:14:593:51:589:207:29
8:45
-0:29
25.2M
25.20 mi15:18:243:55:239:203:25
9:54
+1:09
Finish
26.22 mi15:26:454:03:449:188:21
8:12
-1:42

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

8:12 /mi

Average Pace

9:18 /mi

Slowest Pace

10:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

21:58

9% of race

Time at Steady Pace

2:21:29

58% of race

Time at Slower Pace

1:20:17

33% of race

Average Pace: 9:18 /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 mi11:51:2328:229:0828:22
9:08
#20575
10K
6.21 mi12:20:1557:149:1328:52
9:17
#20665
15K
9.32 mi12:48:191:25:189:0928:04
9:02
#20153
20K
12.43 mi13:16:421:53:419:0928:23
9:08
#19545
Half
13.11 mi13:22:501:59:499:086:08
8:59
#19496
25K
15.53 mi13:46:232:23:229:1423:33
9:43
#19267
30K
18.64 mi14:16:262:53:259:1830:03
9:40
#18662
20M
20.00 mi14:29:283:06:279:1913:02
9:35
#18383
21M
21.00 mi14:39:423:16:419:2210:14
10:14
#18119
35K
21.75 mi14:46:263:23:259:216:44
9:00
#17937
23M
23.00 mi14:58:163:35:159:2211:50
9:27
#17637
24M
24.00 mi15:07:303:44:299:219:14
9:14
#17476
40K
24.85 mi15:14:593:51:589:207:29
8:45
#17198
25.2M
25.20 mi15:18:243:55:239:203:25
9:54
#17078
Finish
26.22 mi15:26:454:03:449:188:21
8:12
#16815
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi205758181818119056(Top 75%)7277(Top 67%)7277(Top 156%)
10K6.21 mi3.10 mi20665-908202-218202-2120759(Top 81%)8230(Top 75%)8230(Top 177%)
15K9.32 mi3.11 mi20153+5127917+2857917+28519056(Top 75%)7277(Top 67%)7277(Top 156%)
20K12.43 mi3.11 mi19545+6087588+3297588+32917937(Top 70%)6669(Top 61%)6669(Top 143%)
Half13.11 mi0.68 mi19496+497562+267562+2618234(Top 71%)6904(Top 63%)6904(Top 148%)
25K15.53 mi2.42 mi19267+2297447+1157447+11518269(Top 72%)6974(Top 64%)6974(Top 150%)
30K18.64 mi3.11 mi18662+6057195+2527195+25216148(Top 63%)6049(Top 55%)6049(Top 130%)
20M20.00 mi1.36 mi18383+2797076+1197076+11914921(Top 58%)5632(Top 52%)5632(Top 121%)
21M21.00 mi1.00 mi18119+2646950+1266950+12613890(Top 54%)5265(Top 48%)5265(Top 113%)
35K21.75 mi0.75 mi17937+1826877+736877+7313351(Top 52%)4996(Top 46%)4996(Top 107%)
23M23.00 mi1.25 mi17637+3006730+1476730+14713320(Top 52%)5069(Top 46%)5069(Top 109%)
24M24.00 mi1.00 mi17476+1616659+716659+7113287(Top 52%)5078(Top 46%)5078(Top 109%)
40K24.85 mi0.85 mi17198+2786538+1216538+1219683(Top 38%)3422(Top 31%)3422(Top 73%)
25.2M25.20 mi0.35 mi17078+1206488+506488+5010647(Top 42%)3956(Top 36%)3956(Top 85%)
Finish26.22 mi1.02 mi16815+2636375+1136375+1139783(Top 38%)3427(Top 31%)3427(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

19056

Females

7277

F18-39

7277

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

20759

Females

8230

F18-39

8230

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

19056

Females

7277

F18-39

7277

15K→20K

9.3 - 12.4 mi

Top 70%
×5stories
+106ft-86ft

Overall

17937

Females

6669

F18-39

6669

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

18234

Females

6904

F18-39

6904

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

18269

Females

6974

F18-39

6974

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

16148

Females

6049

F18-39

6049

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

14921

Females

5632

F18-39

5632

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

13890

Females

5265

F18-39

5265

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13351

Females

4996

F18-39

4996

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

13320

Females

5069

F18-39

5069

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

13287

Females

5078

F18-39

5078

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

9683

Females

3422

F18-39

3422

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

10647

Females

3956

F18-39

3956

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

9783

Females

3427

F18-39

3427

Passing Analysis

Category:
Athletes Passed
4256
Passed By
496
Net Change
+3760
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20575
5K → 10K228318-90#20575#20665
10K → 15K54230+512#20665#20153
15K → 20K62315+608#20153#19545
20K → Half6112+49#19545#19496
Half → 25K30374+229#19496#19267
25K → 30K62116+605#19267#18662
30K → 20M2845+279#18662#18383
20M → 21M27814+264#18383#18119
21M → 35K1842+182#18119#17937
35K → 23M3033+300#17937#17637
23M → 24M1643+161#17637#17476
24M → 40K2791+278#17476#17198
40K → 25.2M1211+120#17198#17078
25.2M → Finish2652+263#17078#16815
TOTALS4256496+3760
📊

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