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BOSTON MARATHON 2023

Eileen O'Brien

Bib: 24828•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:32
Rank: #23002
Start → 5K
30:32 | 9:50/mi
10K· 6.21 mi
1:01:03
Rank: #23220 (-218)
5K → 10K
30:31 | 9:49/mi
15K· 9.32 mi
1:31:49
Rank: #23256 (-36)
10K → 15K
30:46 | 9:54/mi
20K· 12.43 mi
2:02:38
Rank: #23118 (+138)
15K → 20K
30:49 | 9:55/mi
Half· 13.11 mi
2:09:27
Rank: #23112 (+6)
20K → Half
6:49 | 9:59/mi
25K· 15.53 mi
2:33:12
Rank: #22876 (+236)
Half → 25K
23:45 | 9:48/mi
30K· 18.64 mi
3:04:12
Rank: #22522 (+354)
25K → 30K
31:00 | 9:59/mi
20M
3:17:45
Rank: #22380 (+142)
30K → 20M
13:33 | 9:58/mi
21M
3:27:57
Rank: #22181 (+199)
20M → 21M
10:12 | 10:12/mi
35K· 21.75 mi
3:35:21
Rank: #22129 (+52)
21M → 35K
7:24 | 9:53/mi
23M
3:48:06
Rank: #22049 (+80)
35K → 23M
12:45 | 10:11/mi
24M
3:57:58
Rank: #21979 (+70)
23M → 24M
9:52 | 9:52/mi
40K· 24.85 mi
4:06:38
Rank: #21923 (+56)
24M → 40K
8:40 | 10:08/mi
25.2M
4:10:12
Rank: #21874 (+49)
40K → 25.2M
3:34 | 10:21/mi
Finish· 26.22 mi
4:19:22
Rank: #21780 (+94)
25.2M → Finish
9:10 | 9:00/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:09:27
Pace9:52 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:09:55
Pace9:55 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1930:329:5030:32
9:50
-
10K
6.21 mi12:16:501:01:039:5030:31
9:49
-0:01
15K
9.32 mi12:47:361:31:499:5130:46
9:54
+0:05
20K
12.43 mi13:18:252:02:389:5230:49
9:55
+0:01
Half
13.11 mi13:25:142:09:279:526:49
9:59
+0:04
25K
15.53 mi13:48:592:33:129:5223:45
9:48
-0:11
30K
18.64 mi14:19:593:04:129:5331:00
9:59
+0:11
20M
20.00 mi14:33:323:17:459:5313:33
9:58
-0:01
21M
21.00 mi14:43:443:27:579:5410:12
10:12
+0:14
35K
21.75 mi14:51:083:35:219:547:24
9:53
-0:19
23M
23.00 mi15:03:533:48:069:5512:45
10:11
+0:18
24M
24.00 mi15:13:453:57:589:559:52
9:52
-0:19
40K
24.85 mi15:22:254:06:389:558:40
10:08
+0:16
25.2M
25.20 mi15:25:594:10:129:563:34
10:21
+0:13
Finish
26.22 mi15:35:094:19:229:549:10
9:00
-1:21

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

9:00 /mi

Average Pace

9:54 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:14

43% of race

Time at Steady Pace

2:28:08

57% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:54 /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 mi11:46:1930:329:5030:32
9:50
#23002
10K
6.21 mi12:16:501:01:039:5030:31
9:49
#23220
15K
9.32 mi12:47:361:31:499:5130:46
9:54
#23256
20K
12.43 mi13:18:252:02:389:5230:49
9:55
#23118
Half
13.11 mi13:25:142:09:279:526:49
9:59
#23112
25K
15.53 mi13:48:592:33:129:5223:45
9:48
#22876
30K
18.64 mi14:19:593:04:129:5331:00
9:59
#22522
20M
20.00 mi14:33:323:17:459:5313:33
9:58
#22380
21M
21.00 mi14:43:443:27:579:5410:12
10:12
#22181
35K
21.75 mi14:51:083:35:219:547:24
9:53
#22129
23M
23.00 mi15:03:533:48:069:5512:45
10:11
#22049
24M
24.00 mi15:13:453:57:589:559:52
9:52
#21979
40K
24.85 mi15:22:254:06:389:558:40
10:08
#21923
25.2M
25.20 mi15:25:594:10:129:563:34
10:21
#21874
Finish
26.22 mi15:35:094:19:229:549:10
9:00
#21780
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi230029390939023309(Top 88%)9497(Top 83%)9497(Top 194%)
10K6.21 mi3.10 mi23220-2189485-959485-9523325(Top 88%)9526(Top 83%)9526(Top 195%)
15K9.32 mi3.11 mi23256-369489-49489-423309(Top 88%)9497(Top 83%)9497(Top 194%)
20K12.43 mi3.11 mi23118+1389413+769413+7622707(Top 85%)9192(Top 80%)9192(Top 188%)
Half13.11 mi0.68 mi23112+69409+49409+423263(Top 87%)9493(Top 83%)9493(Top 194%)
25K15.53 mi2.42 mi22876+2369296+1139296+11321733(Top 82%)8695(Top 76%)8695(Top 178%)
30K18.64 mi3.11 mi22522+3549140+1569140+15620986(Top 79%)8336(Top 73%)8336(Top 171%)
20M20.00 mi1.36 mi22380+1429059+819059+8120422(Top 77%)8093(Top 71%)8093(Top 166%)
21M21.00 mi1.00 mi22181+1998954+1058954+10518739(Top 70%)7194(Top 63%)7194(Top 147%)
35K21.75 mi0.75 mi22129+528937+178937+1720998(Top 79%)8493(Top 74%)8493(Top 174%)
23M23.00 mi1.25 mi22049+808897+408897+4020534(Top 77%)8256(Top 72%)8256(Top 169%)
24M24.00 mi1.00 mi21979+708866+318866+3120437(Top 77%)8230(Top 72%)8230(Top 169%)
40K24.85 mi0.85 mi21923+568850+168850+1620351(Top 76%)8256(Top 72%)8256(Top 169%)
25.2M25.20 mi0.35 mi21874+498829+218829+2118677(Top 70%)7339(Top 64%)7339(Top 150%)
Finish26.22 mi1.02 mi21780+948783+468783+4617991(Top 68%)6917(Top 61%)6917(Top 142%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

23309

Females

9497

F18-39

9497

5K→10K

3.1 - 6.2 mi

Top 88%
×5stories
+79ft-138ft

Overall

23325

Females

9526

F18-39

9526

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

23309

Females

9497

F18-39

9497

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

22707

Females

9192

F18-39

9192

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23263

Females

9493

F18-39

9493

Half→25K

13.1 - 15.5 mi

Top 82%
×4stories
+66ft-88ft

Overall

21733

Females

8695

F18-39

8695

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

20986

Females

8336

F18-39

8336

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20422

Females

8093

F18-39

8093

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

18739

Females

7194

F18-39

7194

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

20998

Females

8493

F18-39

8493

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20534

Females

8256

F18-39

8256

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

20437

Females

8230

F18-39

8230

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20351

Females

8256

F18-39

8256

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18677

Females

7339

F18-39

7339

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

17991

Females

6917

F18-39

6917

Passing Analysis

Category:
Athletes Passed
1873
Passed By
651
Net Change
+1222
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23002
5K → 10K129347-218#23002#23220
10K → 15K124160-36#23220#23256
15K → 20K19557+138#23256#23118
20K → Half2418+6#23118#23112
Half → 25K2448+236#23112#22876
25K → 30K36612+354#22876#22522
30K → 20M1453+142#22522#22380
20M → 21M2012+199#22380#22181
21M → 35K586+52#22181#22129
35K → 23M9313+80#22129#22049
23M → 24M799+70#22049#21979
24M → 40K6610+56#21979#21923
40K → 25.2M501+49#21923#21874
25.2M → Finish995+94#21874#21780
TOTALS1873651+1222
📊

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