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BOSTON MARATHON 2023

Claire O' Brien

Bib: 13364•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 47%
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:44/mi
24:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
47:53
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:12:36
↑ 67↓ 78
20K· 12.43 mi
8:40/mi
1:39:32
↑ 106↓ 860.1%
Half· 13.11 mi
7:52/mi
1:44:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:06:30
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:34:11
↑ 181↓ 1480.2%
20M
8:43/mi
2:46:02
↑ 64↓ 500.2%
21M
10:27/mi
2:56:29
↑ 106↓ 241.6%
35K· 21.75 mi
8:49/mi
3:03:05
↑ 17↓ 861.7%
23M
9:33/mi
3:15:03
↑ 23↓ 630.6%
24M
8:36/mi
3:23:39
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:31:13
↓ 200.3%
25.2M
9:37/mi
3:34:32
↑ 13↓ 160.2%
Finish· 26.22 mi
8:32/mi
3:43:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:54
Pace8:00 /mi
2nd Half
Distance13.11 mi
Time1:58:20
Pace9:02 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4424:017:4424:01
7:44
-
10K
6.21 mi11:16:3647:537:4223:52
7:41
-0:03
15K
9.32 mi11:41:191:12:367:4724:43
7:57
+0:16
20K
12.43 mi12:08:151:39:328:0126:56
8:40
+0:43
Half
13.11 mi12:13:371:44:548:005:22
7:52
-0:48
25K
15.53 mi12:35:132:06:308:0921:36
8:55
+1:03
30K
18.64 mi13:02:542:34:118:1627:41
8:55
0:00
20M
20.00 mi13:14:452:46:028:1811:51
8:43
-0:12
21M
21.00 mi13:25:122:56:298:2410:27
10:27
+1:44
35K
21.75 mi13:31:483:03:058:256:36
8:49
-1:38
23M
23.00 mi13:43:463:15:038:2911:58
9:33
+0:44
24M
24.00 mi13:52:223:23:398:298:36
8:36
-0:57
40K
24.85 mi13:59:563:31:138:307:34
8:51
+0:15
25.2M
25.20 mi14:03:153:34:328:313:19
9:37
+0:46
Finish
26.22 mi14:11:573:43:148:318:42
8:32
-1:05

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

7:41 /mi

Average Pace

8:31 /mi

Slowest Pace

10:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:58

35% of race

Time at Steady Pace

1:59:32

54% of race

Time at Slower Pace

25:44

12% of race

Average Pace: 8:31 /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 mi10:52:4424:017:4424:01
7:44
#11750
10K
6.21 mi11:16:3647:537:4223:52
7:41
#11880
15K
9.32 mi11:41:191:12:367:4724:43
7:57
#12584
20K
12.43 mi12:08:151:39:328:0126:56
8:40
#14179
Half
13.11 mi12:13:371:44:548:005:22
7:52
#14133
25K
15.53 mi12:35:132:06:308:0921:36
8:55
#14939
30K
18.64 mi13:02:542:34:118:1627:41
8:55
#15269
20M
20.00 mi13:14:452:46:028:1811:51
8:43
#15247
21M
21.00 mi13:25:122:56:298:2410:27
10:27
#15559
35K
21.75 mi13:31:483:03:058:256:36
8:49
#15615
23M
23.00 mi13:43:463:15:038:2911:58
9:33
#15807
24M
24.00 mi13:52:223:23:398:298:36
8:36
#15785
40K
24.85 mi13:59:563:31:138:307:34
8:51
#15764
25.2M
25.20 mi14:03:153:34:328:313:19
9:37
#15763
Finish
26.22 mi14:11:573:43:148:318:42
8:32
#15730
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi117502724272414049(Top 53%)4118(Top 36%)4118(Top 84%)
10K6.21 mi3.10 mi11880-1302808-842808-8412096(Top 45%)2930(Top 26%)2930(Top 60%)
15K9.32 mi3.11 mi12584-7043223-4153223-41514049(Top 53%)4118(Top 36%)4118(Top 84%)
20K12.43 mi3.11 mi14179-15954191-9684191-96817926(Top 67%)6467(Top 57%)6467(Top 132%)
Half13.11 mi0.68 mi14133+464161+304161+3013415(Top 50%)3764(Top 33%)3764(Top 77%)
25K15.53 mi2.42 mi14939-8064673-5124673-51218498(Top 69%)6841(Top 60%)6841(Top 140%)
30K18.64 mi3.11 mi15269-3304923-2504923-25016702(Top 63%)5887(Top 52%)5887(Top 121%)
20M20.00 mi1.36 mi15247+224942-194942-1915012(Top 56%)5001(Top 44%)5001(Top 102%)
21M21.00 mi1.00 mi15559-3125149-2075149-20719436(Top 73%)7599(Top 67%)7599(Top 156%)
35K21.75 mi0.75 mi15615-565207-585207-5817063(Top 64%)6301(Top 55%)6301(Top 129%)
23M23.00 mi1.25 mi15807-1925345-1385345-13818551(Top 70%)7150(Top 63%)7150(Top 146%)
24M24.00 mi1.00 mi15785+225351-65351-615081(Top 57%)5276(Top 46%)5276(Top 108%)
40K24.85 mi0.85 mi15764+215342+95342+915377(Top 58%)5509(Top 48%)5509(Top 113%)
25.2M25.20 mi0.35 mi15763+15343-15343-115780(Top 59%)5736(Top 50%)5736(Top 117%)
Finish26.22 mi1.02 mi15730+335331+125331+1215651(Top 59%)5619(Top 49%)5619(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14049

Females

4118

F18-39

4118

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12096

Females

2930

F18-39

2930

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14049

Females

4118

F18-39

4118

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

17926

Females

6467

F18-39

6467

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

13415

Females

3764

F18-39

3764

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18498

Females

6841

F18-39

6841

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

16702

Females

5887

F18-39

5887

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

15012

Females

5001

F18-39

5001

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19436

Females

7599

F18-39

7599

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

17063

Females

6301

F18-39

6301

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18551

Females

7150

F18-39

7150

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15081

Females

5276

F18-39

5276

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15377

Females

5509

F18-39

5509

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15780

Females

5736

F18-39

5736

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15651

Females

5619

F18-39

5619

Passing Analysis

Category:
Athletes Passed
914
Passed By
4894
Net Change
-3980
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11750
5K → 10K243373-130#11750#11880
10K → 15K38742-704#11880#12584
15K → 20K141609-1595#12584#14179
20K → Half559+46#14179#14133
Half → 25K28834-806#14133#14939
25K → 30K86416-330#14939#15269
30K → 20M9977+22#15269#15247
20M → 21M28340-312#15247#15559
21M → 35K2985-56#15559#15615
35K → 23M37229-192#15615#15807
23M → 24M8765+22#15807#15785
24M → 40K6948+21#15785#15764
40K → 25.2M3029+1#15764#15763
25.2M → Finish7138+33#15763#15730
TOTALS9144894-3980
📊

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