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BOSTON MARATHON 2023

Sophie O'Brien

Bib: 14215•F

OR

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 4%
Division (F18-39)
#0 / 4884
Top 8%
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
7:22/mi
22:53
↑ 97↓ 3451.5%
10K· 6.21 mi
7:00/mi
44:39
↑ 79↓ 1380.4%
15K· 9.32 mi
6:56/mi
1:06:11
↑ 67↓ 78
20K· 12.43 mi
6:52/mi
1:27:31
↑ 106↓ 860.1%
Half· 13.11 mi
6:39/mi
1:32:03
↑ 19↓ 370.5%
25K· 15.53 mi
6:51/mi
1:48:40
↑ 66↓ 880.2%
30K· 18.64 mi
7:06/mi
2:10:43
↑ 181↓ 1480.2%
20M
7:19/mi
2:20:40
↑ 64↓ 500.2%
21M
7:38/mi
2:28:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:01/mi
2:33:33
↑ 17↓ 861.7%
23M
7:16/mi
2:42:39
↑ 23↓ 630.6%
24M
7:05/mi
2:49:44
↓ 821.3%
40K· 24.85 mi
7:22/mi
2:56:02
↓ 200.3%
25.2M
7:47/mi
2:58:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:14/mi
3:06:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:03
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:34:02
Pace7:10 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:5222:537:2222:53
7:22
-
10K
6.21 mi11:13:3844:397:1121:46
7:00
-0:22
15K
9.32 mi11:35:101:06:117:0621:32
6:56
-0:04
20K
12.43 mi11:56:301:27:317:0321:20
6:52
-0:04
Half
13.11 mi12:01:021:32:037:014:32
6:39
-0:13
25K
15.53 mi12:17:391:48:407:0016:37
6:51
+0:12
30K
18.64 mi12:39:422:10:437:0122:03
7:06
+0:15
20M
20.00 mi12:49:392:20:407:029:57
7:19
+0:13
21M
21.00 mi12:57:172:28:187:047:38
7:38
+0:19
35K
21.75 mi13:02:322:33:337:045:15
7:01
-0:37
23M
23.00 mi13:11:382:42:397:049:06
7:16
+0:15
24M
24.00 mi13:18:432:49:447:047:05
7:05
-0:11
40K
24.85 mi13:25:012:56:027:056:18
7:22
+0:17
25.2M
25.20 mi13:27:422:58:437:062:41
7:47
+0:25
Finish
26.22 mi13:35:043:06:057:067:22
7:14
-0:33

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

6:39 /mi

Average Pace

7:06 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:38

73% of race

Time at Steady Pace

49:27

27% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:06 /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 mi10:51:5222:537:2222:53
7:22
#8553
10K
6.21 mi11:13:3844:397:1121:46
7:00
#7667
15K
9.32 mi11:35:101:06:117:0621:32
6:56
#7112
20K
12.43 mi11:56:301:27:317:0321:20
6:52
#6592
Half
13.11 mi12:01:021:32:037:014:32
6:39
#6472
25K
15.53 mi12:17:391:48:407:0016:37
6:51
#6193
30K
18.64 mi12:39:422:10:437:0122:03
7:06
#5891
20M
20.00 mi12:49:392:20:407:029:57
7:19
#5849
21M
21.00 mi12:57:172:28:187:047:38
7:38
#5785
35K
21.75 mi13:02:322:33:337:045:15
7:01
#5747
23M
23.00 mi13:11:382:42:397:049:06
7:16
#5652
24M
24.00 mi13:18:432:49:447:047:05
7:05
#5579
40K
24.85 mi13:25:012:56:027:056:18
7:22
#5546
25.2M
25.20 mi13:27:422:58:437:062:41
7:47
#5517
Finish
26.22 mi13:35:043:06:057:067:22
7:14
#5499
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8553120912096163(Top 23%)569(Top 5%)569(Top 12%)
10K6.21 mi3.10 mi7667+886907+302907+3026871(Top 26%)720(Top 6%)720(Top 15%)
15K9.32 mi3.11 mi7112+555765+142765+1426163(Top 23%)569(Top 5%)569(Top 12%)
20K12.43 mi3.11 mi6592+520654+111654+1115090(Top 19%)377(Top 3%)377(Top 8%)
Half13.11 mi0.68 mi6472+120624+30624+303932(Top 15%)244(Top 2%)244(Top 5%)
25K15.53 mi2.42 mi6193+279563+61563+614634(Top 17%)322(Top 3%)322(Top 7%)
30K18.64 mi3.11 mi5891+302505+58505+584929(Top 19%)393(Top 3%)393(Top 8%)
20M20.00 mi1.36 mi5849+425055055778(Top 22%)640(Top 6%)640(Top 13%)
21M21.00 mi1.00 mi5785+64502+3502+35299(Top 20%)608(Top 5%)608(Top 12%)
35K21.75 mi0.75 mi5747+38494+8494+85478(Top 21%)608(Top 5%)608(Top 12%)
23M23.00 mi1.25 mi5652+95490+4490+45165(Top 19%)574(Top 5%)574(Top 12%)
24M24.00 mi1.00 mi5579+73487+3487+35139(Top 19%)604(Top 5%)604(Top 12%)
40K24.85 mi0.85 mi5546+33488-1488-15906(Top 22%)937(Top 8%)937(Top 19%)
25.2M25.20 mi0.35 mi5517+29485+3485+35333(Top 20%)825(Top 7%)825(Top 17%)
Finish26.22 mi1.02 mi5499+18496-11496-116633(Top 25%)1284(Top 11%)1284(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6163

Females

569

F18-39

569

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

6871

Females

720

F18-39

720

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6163

Females

569

F18-39

569

15K→20K

9.3 - 12.4 mi

Top 19%
×5story building
+106ft-86ft

Overall

5090

Females

377

F18-39

377

20K→Half

12.4 - 13.1 mi

Top 15%
×2story building
+19ft-37ft

Overall

3932

Females

244

F18-39

244

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4634

Females

322

F18-39

322

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

4929

Females

393

F18-39

393

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5778

Females

640

F18-39

640

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5299

Females

608

F18-39

608

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

5478

Females

608

F18-39

608

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5165

Females

574

F18-39

574

23M→24M

23.0 - 24.0 mi

Top 19%
×6story building
+12ft-82ft

Overall

5139

Females

604

F18-39

604

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5906

Females

937

F18-39

937

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5333

Females

825

F18-39

825

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2story building
+22ft-21ft

Overall

6633

Females

1284

F18-39

1284

Passing Analysis

Category:
Athletes Passed
3291
Passed By
237
Net Change
+3054
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8553
5K → 10K91428+886#8553#7667
10K → 15K5638+555#7667#7112
15K → 20K5211+520#7112#6592
20K → Half1200+120#6592#6472
Half → 25K2801+279#6472#6193
25K → 30K31311+302#6193#5891
30K → 20M8240+42#5891#5849
20M → 21M8824+64#5849#5785
21M → 35K4810+38#5785#5747
35K → 23M11823+95#5747#5652
23M → 24M829+73#5652#5579
24M → 40K5825+33#5579#5546
40K → 25.2M378+29#5546#5517
25.2M → Finish6749+18#5517#5499
TOTALS3291237+3054
📊

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