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BOSTON MARATHON 2023

Brooke Demarest

Bib: 12555•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 29%
Gender (Female)
#0 / 11423
Top 10%
Division (F18-39)
#0 / 4884
Top 19%
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
7:23/mi
22:55
↑ 97↓ 3451.5%
10K· 6.21 mi
7:22/mi
45:47
↑ 79↓ 1380.4%
15K· 9.32 mi
7:17/mi
1:08:26
↑ 67↓ 78
20K· 12.43 mi
7:19/mi
1:31:10
↑ 106↓ 860.1%
Half· 13.11 mi
7:09/mi
1:36:03
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:53:50
↑ 66↓ 880.2%
30K· 18.64 mi
7:30/mi
2:17:09
↑ 181↓ 1480.2%
20M
7:28/mi
2:27:18
↑ 64↓ 500.2%
21M
7:47/mi
2:35:05
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:40:46
↑ 17↓ 861.7%
23M
8:32/mi
2:51:27
↑ 23↓ 630.6%
24M
7:28/mi
2:58:55
↓ 821.3%
40K· 24.85 mi
7:20/mi
3:05:11
↓ 200.3%
25.2M
8:07/mi
3:07:59
↑ 13↓ 160.2%
Finish· 26.22 mi
7:09/mi
3:15:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:03
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:39:13
Pace7:34 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1322:557:2322:55
7:23
-
10K
6.21 mi11:14:0545:477:2222:52
7:22
-0:01
15K
9.32 mi11:36:441:08:267:2122:39
7:17
-0:05
20K
12.43 mi11:59:281:31:107:2022:44
7:19
+0:02
Half
13.11 mi12:04:211:36:037:204:53
7:09
-0:10
25K
15.53 mi12:22:081:53:507:2017:47
7:20
+0:11
30K
18.64 mi12:45:272:17:097:2123:19
7:30
+0:10
20M
20.00 mi12:55:362:27:187:2210:09
7:28
-0:02
21M
21.00 mi13:03:232:35:057:237:47
7:47
+0:19
35K
21.75 mi13:09:042:40:467:245:41
7:36
-0:11
23M
23.00 mi13:19:452:51:277:2710:41
8:32
+0:56
24M
24.00 mi13:27:132:58:557:277:28
7:28
-1:04
40K
24.85 mi13:33:293:05:117:276:16
7:20
-0:08
25.2M
25.20 mi13:36:173:07:597:282:48
8:07
+0:47
Finish
26.22 mi13:43:343:15:167:277:17
7:09
-0:58

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

7:09 /mi

Average Pace

7:27 /mi

Slowest Pace

8:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:47

93% of race

Time at Steady Pace

2:48

1% of race

Time at Slower Pace

10:41

5% of race

Average Pace: 7:27 /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 mi10:51:1322:557:2322:55
7:23
#8659
10K
6.21 mi11:14:0545:477:2222:52
7:22
#8961
15K
9.32 mi11:36:441:08:267:2122:39
7:17
#8786
20K
12.43 mi11:59:281:31:107:2022:44
7:19
#8519
Half
13.11 mi12:04:211:36:037:204:53
7:09
#8465
25K
15.53 mi12:22:081:53:507:2017:47
7:20
#8285
30K
18.64 mi12:45:272:17:097:2123:19
7:30
#8070
20M
20.00 mi12:55:362:27:187:2210:09
7:28
#7906
21M
21.00 mi13:03:232:35:057:237:47
7:47
#7750
35K
21.75 mi13:09:042:40:467:245:41
7:36
#7793
23M
23.00 mi13:19:452:51:277:2710:41
8:32
#8115
24M
24.00 mi13:27:132:58:557:277:28
7:28
#8048
40K
24.85 mi13:33:293:05:117:276:16
7:20
#7927
25.2M
25.20 mi13:36:173:07:597:282:48
8:07
#7906
Finish
26.22 mi13:43:343:15:167:277:17
7:09
#7808
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8659125812588486(Top 32%)1242(Top 11%)1242(Top 25%)
10K6.21 mi3.10 mi8961-3021394-1361394-1369314(Top 35%)1547(Top 14%)1547(Top 32%)
15K9.32 mi3.11 mi8786+1751344+501344+508486(Top 32%)1242(Top 11%)1242(Top 25%)
20K12.43 mi3.11 mi8519+2671245+991245+997924(Top 30%)1079(Top 9%)1079(Top 22%)
Half13.11 mi0.68 mi8465+541225+201225+207632(Top 29%)975(Top 9%)975(Top 20%)
25K15.53 mi2.42 mi8285+1801184+411184+417524(Top 28%)1022(Top 9%)1022(Top 21%)
30K18.64 mi3.11 mi8070+2151144+401144+407263(Top 27%)1021(Top 9%)1021(Top 21%)
20M20.00 mi1.36 mi7906+1641100+441100+446621(Top 25%)900(Top 8%)900(Top 18%)
21M21.00 mi1.00 mi7750+1561056+441056+446113(Top 23%)840(Top 7%)840(Top 17%)
35K21.75 mi0.75 mi7793-431075-191075-199265(Top 35%)2018(Top 18%)2018(Top 41%)
23M23.00 mi1.25 mi8115-3221227-1521227-15213434(Top 50%)4297(Top 38%)4297(Top 88%)
24M24.00 mi1.00 mi8048+671222+51222+57499(Top 28%)1482(Top 13%)1482(Top 30%)
40K24.85 mi0.85 mi7927+1211194+281194+285677(Top 21%)867(Top 8%)867(Top 18%)
25.2M25.20 mi0.35 mi7906+211192+21192+27262(Top 27%)1506(Top 13%)1506(Top 31%)
Finish26.22 mi1.02 mi7808+981179+131179+136125(Top 23%)1107(Top 10%)1107(Top 23%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

8486

Females

1242

F18-39

1242

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9314

Females

1547

F18-39

1547

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

8486

Females

1242

F18-39

1242

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

7924

Females

1079

F18-39

1079

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

7632

Females

975

F18-39

975

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7524

Females

1022

F18-39

1022

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7263

Females

1021

F18-39

1021

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

6621

Females

900

F18-39

900

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6113

Females

840

F18-39

840

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9265

Females

2018

F18-39

2018

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13434

Females

4297

F18-39

4297

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7499

Females

1482

F18-39

1482

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5677

Females

867

F18-39

867

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7262

Females

1506

F18-39

1506

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2story building
+22ft-21ft

Overall

6125

Females

1107

F18-39

1107

Passing Analysis

Category:
Athletes Passed
1962
Passed By
1111
Net Change
+851
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8659
5K → 10K147449-302#8659#8961
10K → 15K23964+175#8961#8786
15K → 20K29629+267#8786#8519
20K → Half628+54#8519#8465
Half → 25K20222+180#8465#8285
25K → 30K24732+215#8285#8070
30K → 20M17612+164#8070#7906
20M → 21M16711+156#7906#7750
21M → 35K2871-43#7750#7793
35K → 23M24346-322#7793#8115
23M → 24M9730+67#8115#8048
24M → 40K1309+121#8048#7927
40K → 25.2M3312+21#7927#7906
25.2M → Finish11416+98#7906#7808
TOTALS19621111+851
📊

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