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BOSTON MARATHON 2023

Sarah O'Connor

Bib: 27789 F GB

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:39/mi
26:52
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:33/mi
53:27
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:05/mi
1:21:40
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:19/mi
1:50:37
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:26/mi
1:57:03
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:54/mi
2:21:02
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:22/mi
2:53:15
↑ 181↓ 1480.2%
138 ft elev
20M
10:40/mi
3:07:45
↑ 64↓ 500.2%
148 ft elev
21M
11:41/mi
3:19:26
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:47/mi
3:27:30
↑ 17↓ 861.7%
156 ft elev
23M
11:33/mi
3:41:58
↑ 23↓ 630.6%
116 ft elev
24M
11:15/mi
3:53:13
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:25/mi
4:02:59
↓ 200.3%
20 ft elev
25.2M
11:45/mi
4:07:02
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:24/mi
4:17:38
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:57:038:56 /mi⚡ faster
2nd Half
2:20:3510:43 /mi+20.1%
Positive split — 20.1% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:5726:528:3926:52
8:39
-
10K
6.21 mi12:10:3253:278:3626:35
8:33
-0:06
15K
9.32 mi12:38:451:21:408:4628:13
9:05
+0:32
20K
12.43 mi13:07:421:50:378:5428:57
9:19
+0:14
Half
13.11 mi13:14:081:57:038:566:26
9:26
+0:07
25K
15.53 mi13:38:072:21:029:0523:59
9:54
+0:28
30K
18.64 mi14:10:202:53:159:1832:13
10:22
+0:28
20M
20.00 mi14:24:503:07:459:2314:30
10:40
+0:18
21M
21.00 mi14:36:313:19:269:3011:41
11:41
+1:01
35K
21.75 mi14:44:353:27:309:328:04
10:47
-0:54
23M
23.00 mi14:59:033:41:589:3914:28
11:33
+0:46
24M
24.00 mi15:10:183:53:139:4311:15
11:15
-0:18
40K
24.85 mi15:20:044:02:599:479:46
11:25
+0:10
25.2M
25.20 mi15:24:074:07:029:484:03
11:45
+0:20
Finish
26.22 mi15:34:434:17:389:5010:36
10:24
-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

8:33 /mi

Average Pace

9:50 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:03

45% of race

Time at Steady Pace

1:29:22

35% of race

Time at Slower Pace

51:13

20% of race

Average Pace: 9:50 /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 mi11:43:5726:528:3926:52
8:39
#18565
10K
6.21 mi12:10:3253:278:3626:35
8:33
#18537
15K
9.32 mi12:38:451:21:408:4628:13
9:05
#19412
20K
12.43 mi13:07:421:50:378:5428:57
9:19
#19865
Half
13.11 mi13:14:081:57:038:566:26
9:26
#20026
25K
15.53 mi13:38:072:21:029:0523:59
9:54
#20470
30K
18.64 mi14:10:202:53:159:1832:13
10:22
#20804
20M
20.00 mi14:24:503:07:459:2314:30
10:40
#20911
21M
21.00 mi14:36:313:19:269:3011:41
11:41
#21017
35K
21.75 mi14:44:353:27:309:328:04
10:47
#21112
23M
23.00 mi14:59:033:41:589:3914:28
11:33
#21296
24M
24.00 mi15:10:183:53:139:4311:15
11:15
#21428
40K
24.85 mi15:20:044:02:599:479:46
11:25
#21526
25.2M
25.20 mi15:24:074:07:029:484:03
11:45
#21537
Finish
26.22 mi15:34:434:17:389:5010:36
10:24
#21599
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi18565691669162088581798179
10K6.21 mi3.10 mi18537+286851+656851+651861968486848
15K9.32 mi3.11 mi19412-8757401-5507401-5502088581798179
20K12.43 mi3.11 mi19865-4537638-2377638-2372102982498249
Half13.11 mi0.68 mi20026-1617740-1027740-1022193287478747
25K15.53 mi2.42 mi20470-4447965-2257965-2252197188218821
30K18.64 mi3.11 mi20804-3348162-1978162-1972193288698869
20M20.00 mi1.36 mi20911-1078246-848246-842208990349034
21M21.00 mi1.00 mi21017-1068321-758321-752221491189118
35K21.75 mi0.75 mi21112-958384-638384-632289595379537
23M23.00 mi1.25 mi21296-1848497-1138497-1132335197759775
24M24.00 mi1.00 mi21428-1328573-768573-762350798969896
40K24.85 mi0.85 mi21526-988641-688641-682309597139713
25.2M25.20 mi0.35 mi21537-118652-118652-112206191569156
Finish26.22 mi1.02 mi21599-628693-418693-412281095539553

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20885

Females

8179

F18-39

8179

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18619

Females

6848

F18-39

6848

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20885

Females

8179

F18-39

8179

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

21029

Females

8249

F18-39

8249

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21932

Females

8747

F18-39

8747

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

21971

Females

8821

F18-39

8821

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21932

Females

8869

F18-39

8869

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

22089

Females

9034

F18-39

9034

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

22214

Females

9118

F18-39

9118

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

22895

Females

9537

F18-39

9537

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

23351

Females

9775

F18-39

9775

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

23507

Females

9896

F18-39

9896

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23095

Females

9713

F18-39

9713

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

22061

Females

9156

F18-39

9156

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

22810

Females

9553

F18-39

9553

Passing Analysis

Category:
Athletes Passed
732
Passed By
3766
Net Change
-3034
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18565
5K → 10K356328+28#18565#18537
10K → 15K22897-875#18537#19412
15K → 20K65518-453#19412#19865
20K → Half8169-161#19865#20026
Half → 25K27471-444#20026#20470
25K → 30K61395-334#20470#20804
30K → 20M47154-107#20804#20911
20M → 21M32138-106#20911#21017
21M → 35K20115-95#21017#21112
35K → 23M22206-184#21112#21296
23M → 24M12144-132#21296#21428
24M → 40K21119-98#21428#21526
40K → 25.2M1728-11#21526#21537
25.2M → Finish2284-62#21537#21599
TOTALS7323766-3034

Passing Charts

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