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BOSTON MARATHON 2023

Courtney Cobb

LA

Bib: 11321 F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 23%
Gender (Female)
#0 / 11423
Top 6%
Division (F18-39)
#0 / 4884
Top 11%
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
7:16/mi
22:34
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:09/mi
44:46
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:08/mi
1:06:55
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:12/mi
1:29:18
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:07/mi
1:34:09
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:10/mi
1:51:32
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:15/mi
2:14:03
↑ 181↓ 1480.2%
138 ft elev
20M
7:13/mi
2:23:51
↑ 64↓ 500.2%
148 ft elev
21M
7:24/mi
2:31:15
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:12/mi
2:36:38
↑ 17↓ 861.7%
156 ft elev
23M
7:10/mi
2:45:37
↑ 23↓ 630.6%
116 ft elev
24M
7:13/mi
2:52:50
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:17/mi
2:59:04
↓ 200.3%
20 ft elev
25.2M
7:44/mi
3:01:44
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:03/mi
3:08:55
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:34:09
Pace7:11 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:34:46
Pace7:14 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1222:347:1622:34
7:16
-
10K
6.21 mi11:11:2444:467:1222:12
7:09
-0:07
15K
9.32 mi11:33:331:06:557:1122:09
7:08
-0:01
20K
12.43 mi11:55:561:29:187:1122:23
7:12
+0:04
Half
13.11 mi12:00:471:34:097:114:51
7:07
-0:05
25K
15.53 mi12:18:101:51:327:1117:23
7:10
+0:03
30K
18.64 mi12:40:412:14:037:1122:31
7:15
+0:05
20M
20.00 mi12:50:292:23:517:129:48
7:13
-0:02
21M
21.00 mi12:57:532:31:157:127:24
7:24
+0:11
35K
21.75 mi13:03:162:36:387:125:23
7:12
-0:12
23M
23.00 mi13:12:152:45:377:128:59
7:10
-0:02
24M
24.00 mi13:19:282:52:507:127:13
7:13
+0:03
40K
24.85 mi13:25:422:59:047:126:14
7:17
+0:04
25.2M
25.20 mi13:28:223:01:447:132:40
7:44
+0:27
Finish
26.22 mi13:35:333:08:557:137:11
7:03
-0:41

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

7:03 /mi

Average Pace

7:13 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:15

99% of race

Time at Steady Pace

2:40

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:12 /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 mi10:49:1222:347:1622:34
7:16
#7894
10K
6.21 mi11:11:2444:467:1222:12
7:09
#7802
15K
9.32 mi11:33:331:06:557:1122:09
7:08
#7610
20K
12.43 mi11:55:561:29:187:1122:23
7:12
#7446
Half
13.11 mi12:00:471:34:097:114:51
7:07
#7425
25K
15.53 mi12:18:101:51:327:1117:23
7:10
#7252
30K
18.64 mi12:40:412:14:037:1122:31
7:15
#6944
20M
20.00 mi12:50:292:23:517:129:48
7:13
#6786
21M
21.00 mi12:57:532:31:157:127:24
7:24
#6602
35K
21.75 mi13:03:162:36:387:125:23
7:12
#6568
23M
23.00 mi13:12:152:45:377:128:59
7:10
#6412
24M
24.00 mi13:19:282:52:507:127:13
7:13
#6329
40K
24.85 mi13:25:422:59:047:126:14
7:17
#6257
25.2M
25.20 mi13:28:223:01:447:132:40
7:44
#6218
Finish
26.22 mi13:35:333:08:557:137:11
7:03
#6167
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi78949759757358(Top 28%)846(Top 7%)846(Top 17%)
10K6.21 mi3.10 mi7802+92949+26949+267741(Top 29%)965(Top 8%)965(Top 20%)
15K9.32 mi3.11 mi7610+192902+47902+477358(Top 28%)846(Top 7%)846(Top 17%)
20K12.43 mi3.11 mi7446+164866+36866+367144(Top 27%)815(Top 7%)815(Top 17%)
Half13.11 mi0.68 mi7425+21860+6860+67257(Top 27%)823(Top 7%)823(Top 17%)
25K15.53 mi2.42 mi7252+173822+38822+386509(Top 24%)694(Top 6%)694(Top 14%)
30K18.64 mi3.11 mi6944+308767+55767+555765(Top 22%)565(Top 5%)565(Top 12%)
20M20.00 mi1.36 mi6786+158733+34733+345182(Top 19%)490(Top 4%)490(Top 10%)
21M21.00 mi1.00 mi6602+184708+25708+254137(Top 16%)329(Top 3%)329(Top 7%)
35K21.75 mi0.75 mi6568+34706+2706+26522(Top 24%)915(Top 8%)915(Top 19%)
23M23.00 mi1.25 mi6412+156673+33673+334691(Top 18%)455(Top 4%)455(Top 9%)
24M24.00 mi1.00 mi6329+83665+8665+85851(Top 22%)831(Top 7%)831(Top 17%)
40K24.85 mi0.85 mi6257+72657+8657+85413(Top 20%)768(Top 7%)768(Top 16%)
25.2M25.20 mi0.35 mi6218+39654+3654+35076(Top 19%)721(Top 6%)721(Top 15%)
Finish26.22 mi1.02 mi6167+51658-4658-45527(Top 21%)906(Top 8%)906(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21story building
+97ft-345ft

Overall

7358

Females

846

F18-39

846

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

7741

Females

965

F18-39

965

10K→15K

6.2 - 9.3 mi

Top 28%
×3story building
+67ft-78ft

Overall

7358

Females

846

F18-39

846

15K→20K

9.3 - 12.4 mi

Top 27%
×5story building
+106ft-86ft

Overall

7144

Females

815

F18-39

815

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

7257

Females

823

F18-39

823

Half→25K

13.1 - 15.5 mi

Top 24%
×4story building
+66ft-88ft

Overall

6509

Females

694

F18-39

694

25K→30K

15.5 - 18.6 mi

Top 22%
×9story building
+181ft-148ft

Overall

5765

Females

565

F18-39

565

30K→20M

18.6 - 20.0 mi

Top 19%
×5story building
+64ft-50ft

Overall

5182

Females

490

F18-39

490

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4137

Females

329

F18-39

329

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6522

Females

915

F18-39

915

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4691

Females

455

F18-39

455

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

5851

Females

831

F18-39

831

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5413

Females

768

F18-39

768

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5076

Females

721

F18-39

721

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5527

Females

906

F18-39

906

Passing Analysis

Category:
Athletes Passed
2158
Passed By
431
Net Change
+1727
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7894
5K → 10K279187+92#7894#7802
10K → 15K24856+192#7802#7610
15K → 20K20440+164#7610#7446
20K → Half3312+21#7446#7425
Half → 25K18815+173#7425#7252
25K → 30K32315+308#7252#6944
30K → 20M1624+158#6944#6786
20M → 21M1873+184#6786#6602
21M → 35K6026+34#6602#6568
35K → 23M1648+156#6568#6412
23M → 24M10219+83#6412#6329
24M → 40K8210+72#6329#6257
40K → 25.2M434+39#6257#6218
25.2M → Finish8332+51#6218#6167
TOTALS2158431+1727
📊

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