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BOSTON MARATHON 2023

Summer Cook

Bib: 12941•F

NH

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 16%
Masters (Masters Women)
#0 / 6539
Top 6%
Division (F45-49)
#0 / 1817
Top 6%
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
7:54/mi
24:34
↑ 97↓ 3451.5%
10K· 6.21 mi
7:43/mi
48:31
↑ 79↓ 1380.4%
15K· 9.32 mi
7:43/mi
1:12:29
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:36:46
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:41:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:42/mi
2:00:37
↑ 66↓ 880.2%
30K· 18.64 mi
7:48/mi
2:24:50
↑ 181↓ 1480.2%
20M
7:38/mi
2:35:13
↑ 64↓ 500.2%
21M
7:56/mi
2:43:09
↑ 106↓ 241.6%
35K· 21.75 mi
7:13/mi
2:48:33
↑ 17↓ 861.7%
23M
7:22/mi
2:57:46
↑ 23↓ 630.6%
24M
7:02/mi
3:04:48
↓ 821.3%
40K· 24.85 mi
7:10/mi
3:10:56
↓ 200.3%
25.2M
7:47/mi
3:13:37
↑ 13↓ 160.2%
Finish· 26.22 mi
6:56/mi
3:20:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:58
Pace7:47 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:38:43
Pace7:32 /mi
📊Negative Split: 3.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4224:347:5424:34
7:54
-
10K
6.21 mi11:16:3948:317:4823:57
7:43
-0:11
15K
9.32 mi11:40:371:12:297:4723:58
7:43
0:00
20K
12.43 mi12:04:541:36:467:4724:17
7:49
+0:06
Half
13.11 mi12:10:061:41:587:475:12
7:37
-0:12
25K
15.53 mi12:28:452:00:377:4618:39
7:42
+0:05
30K
18.64 mi12:52:582:24:507:4624:13
7:48
+0:06
20M
20.00 mi13:03:212:35:137:4610:23
7:38
-0:10
21M
21.00 mi13:11:172:43:097:467:56
7:56
+0:18
35K
21.75 mi13:16:412:48:337:455:24
7:13
-0:43
23M
23.00 mi13:25:542:57:467:449:13
7:22
+0:09
24M
24.00 mi13:32:563:04:487:427:02
7:02
-0:20
40K
24.85 mi13:39:043:10:567:416:08
7:10
+0:08
25.2M
25.20 mi13:41:453:13:377:412:41
7:47
+0:37
Finish
26.22 mi13:48:493:20:417:407:04
6:56
-0:51

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

6:56 /mi

Average Pace

7:40 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

40:03

20% of race

Time at Steady Pace

2:40:38

80% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:39 /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 mi10:52:4224:347:5424:34
7:54
#13299
10K
6.21 mi11:16:3948:317:4823:57
7:43
#12779
15K
9.32 mi11:40:371:12:297:4723:58
7:43
#12474
20K
12.43 mi12:04:541:36:467:4724:17
7:49
#12281
Half
13.11 mi12:10:061:41:587:475:12
7:37
#12218
25K
15.53 mi12:28:452:00:377:4618:39
7:42
#11843
30K
18.64 mi12:52:582:24:507:4624:13
7:48
#11340
20M
20.00 mi13:03:212:35:137:4610:23
7:38
#11023
21M
21.00 mi13:11:172:43:097:467:56
7:56
#10770
35K
21.75 mi13:16:412:48:337:455:24
7:13
#10571
23M
23.00 mi13:25:542:57:467:449:13
7:22
#10244
24M
24.00 mi13:32:563:04:487:427:02
7:02
#9938
40K
24.85 mi13:39:043:10:567:416:08
7:10
#9684
25.2M
25.20 mi13:41:453:13:377:412:41
7:47
#9584
Finish
26.22 mi13:48:493:20:417:407:04
6:56
#9376
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi132993602360211962(Top 45%)2873(Top 25%)2873(Top 158%)
10K6.21 mi3.10 mi12779+5203299+3033299+30312338(Top 46%)3052(Top 27%)3052(Top 168%)
15K9.32 mi3.11 mi12474+3053158+1413158+14111962(Top 45%)2873(Top 25%)2873(Top 158%)
20K12.43 mi3.11 mi12281+1933080+783080+7811869(Top 45%)2883(Top 25%)2883(Top 159%)
Half13.11 mi0.68 mi12218+633047+333047+3311233(Top 42%)2464(Top 22%)2464(Top 136%)
25K15.53 mi2.42 mi11843+3752836+2112836+21110239(Top 38%)2102(Top 18%)2102(Top 116%)
30K18.64 mi3.11 mi11340+5032604+2322604+2329330(Top 35%)1850(Top 16%)1850(Top 102%)
20M20.00 mi1.36 mi11023+3172447+1572447+1577791(Top 29%)1327(Top 12%)1327(Top 73%)
21M21.00 mi1.00 mi10770+2532336+1112336+1116971(Top 26%)1131(Top 10%)1131(Top 62%)
35K21.75 mi0.75 mi10571+1992260+762260+766699(Top 25%)1001(Top 9%)1001(Top 55%)
23M23.00 mi1.25 mi10244+3272119+1412119+1415680(Top 21%)718(Top 6%)718(Top 40%)
24M24.00 mi1.00 mi9938+3062002+1172002+1174868(Top 18%)543(Top 5%)543(Top 30%)
40K24.85 mi0.85 mi9684+2541903+991903+994786(Top 18%)590(Top 5%)590(Top 32%)
25.2M25.20 mi0.35 mi9584+1001876+271876+275393(Top 20%)885(Top 8%)885(Top 49%)
Finish26.22 mi1.02 mi9376+2081807+691807+694872(Top 18%)698(Top 6%)698(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

11962

Females

2873

F45-49

2873

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

12338

Females

3052

F45-49

3052

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

11962

Females

2873

F45-49

2873

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11869

Females

2883

F45-49

2883

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11233

Females

2464

F45-49

2464

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10239

Females

2102

F45-49

2102

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9330

Females

1850

F45-49

1850

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7791

Females

1327

F45-49

1327

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

6971

Females

1131

F45-49

1131

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

6699

Females

1001

F45-49

1001

35K→23M

21.8 - 23.0 mi

Top 21%
×5story building
+23ft-63ft

Overall

5680

Females

718

F45-49

718

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4868

Females

543

F45-49

543

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4786

Females

590

F45-49

590

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5393

Females

885

F45-49

885

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

4872

Females

698

F45-49

698

Passing Analysis

Category:
Athletes Passed
4278*
Passed By
355
Net Change
+3923
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13299
5K → 10K650130+520#13299#12779
10K → 15K39994+305#12779#12474
15K → 20K27885+193#12474#12281
20K → Half729+63#12281#12218
Half → 25K3849+375#12218#11843
25K → 30K51411+503#11843#11340
30K → 20M321*4+317#11340#11023
20M → 21M2552+253#11023#10770
21M → 35K2001+199#10770#10571
35K → 23M3281+327#10571#10244
23M → 24M306*0+306#10244#9938
24M → 40K254*0+254#9938#9684
40K → 25.2M1033+100#9684#9584
25.2M → Finish2146+208#9584#9376
TOTALS4278*355+3923

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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