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BOSTON MARATHON 2023

Alexandra Brown

Bib: P147•F

NC

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

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
9:19/mi
28:57
↑ 97↓ 3451.5%
10K· 6.21 mi
11:32/mi
1:04:46
↑ 79↓ 1380.4%
15K· 9.32 mi
11:21/mi
1:40:02
↑ 67↓ 78
20K· 12.43 mi
12:10/mi
2:17:50
↑ 106↓ 860.1%
Half· 13.11 mi
12:28/mi
2:26:20
↑ 19↓ 370.5%
25K· 15.53 mi
13:00/mi
2:57:51
↑ 66↓ 880.2%
30K· 18.64 mi
14:39/mi
3:43:22
↑ 181↓ 1480.2%
20M
14:23/mi
4:02:55
↑ 64↓ 500.2%
21M
17:26/mi
4:20:21
↑ 106↓ 241.6%
35K· 21.75 mi
13:09/mi
4:30:11
↑ 17↓ 861.7%
23M
17:32/mi
4:52:08
↑ 23↓ 630.6%
24M
14:22/mi
5:06:30
↓ 821.3%
40K· 24.85 mi
17:02/mi
5:21:04
↓ 200.3%
25.2M
14:42/mi
5:26:08
↑ 13↓ 160.2%
Finish· 26.22 mi
12:09/mi
5:38:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:26:20
Pace11:10 /mi
2nd Half
Distance13.11 mi
Time3:12:11
Pace14:40 /mi
📊Positive Split: 31.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5828:579:1928:57
9:19
-
10K
6.21 mi10:54:471:04:4610:2535:49
11:32
+2:13
15K
9.32 mi11:30:031:40:0210:4435:16
11:21
-0:11
20K
12.43 mi12:07:512:17:5011:0537:48
12:10
+0:49
Half
13.11 mi12:16:212:26:2011:108:30
12:28
+0:18
25K
15.53 mi12:47:522:57:5111:2731:31
13:00
+0:32
30K
18.64 mi13:33:233:43:2211:5945:31
14:39
+1:39
20M
20.00 mi13:52:564:02:5512:0919:33
14:23
-0:16
21M
21.00 mi14:10:224:20:2112:2417:26
17:26
+3:03
35K
21.75 mi14:20:124:30:1112:259:50
13:09
-4:17
23M
23.00 mi14:42:094:52:0812:4221:57
17:32
+4:23
24M
24.00 mi14:56:315:06:3012:4614:22
14:22
-3:10
40K
24.85 mi15:11:055:21:0412:5514:34
17:02
+2:40
25.2M
25.20 mi15:16:095:26:0812:575:04
14:42
-2:20
Finish
26.22 mi15:28:325:38:3112:5512:23
12:09
-2:33

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

9:19 /mi

Average Pace

12:55 /mi

Slowest Pace

17:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:02

30% of race

Time at Steady Pace

1:40:02

30% of race

Time at Slower Pace

2:18:27

41% of race

Average Pace: 12:55 /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 mi10:18:5828:579:1928:57
9:19
#21590
10K
6.21 mi10:54:471:04:4610:2535:49
11:32
#24541
15K
9.32 mi11:30:031:40:0210:4435:16
11:21
#25045
20K
12.43 mi12:07:512:17:5011:0537:48
12:10
#25346
Half
13.11 mi12:16:212:26:2011:108:30
12:28
#25419
25K
15.53 mi12:47:522:57:5111:2731:31
13:00
#25554
30K
18.64 mi13:33:233:43:2211:5945:31
14:39
#25774
20M
20.00 mi13:52:564:02:5512:0919:33
14:23
#25809
21M
21.00 mi14:10:224:20:2112:2417:26
17:26
#25909
35K
21.75 mi14:20:124:30:1112:259:50
13:09
#25908
23M
23.00 mi14:42:094:52:0812:4221:57
17:32
#26033
24M
24.00 mi14:56:315:06:3012:4614:22
14:22
#26064
40K
24.85 mi15:11:055:21:0412:5514:34
17:02
#26126
25.2M
25.20 mi15:16:095:26:0812:575:04
14:42
#26120
Finish
26.22 mi15:28:325:38:3112:5512:23
12:09
#26101
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi215908689868925560(Top 96%)10786(Top 94%)10786(Top 221%)
10K6.21 mi3.10 mi24541-295110184-149510184-149525988(Top 98%)11034(Top 97%)11034(Top 226%)
15K9.32 mi3.11 mi25045-50410462-27810462-27825560(Top 96%)10786(Top 94%)10786(Top 221%)
20K12.43 mi3.11 mi25346-30110653-19110653-19125749(Top 97%)10919(Top 96%)10919(Top 224%)
Half13.11 mi0.68 mi25419-7310698-4510698-4526135(Top 98%)11141(Top 98%)11141(Top 228%)
25K15.53 mi2.42 mi25554-13510790-9210790-9225865(Top 97%)11003(Top 96%)11003(Top 225%)
30K18.64 mi3.11 mi25774-22010923-13310923-13326311(Top 99%)11260(Top 99%)11260(Top 231%)
20M20.00 mi1.36 mi25809-3510953-3010953-3026046(Top 98%)11151(Top 98%)11151(Top 228%)
21M21.00 mi1.00 mi25909-10011007-5411007-5426504(Top 100%)11360(Top 99%)11360(Top 233%)
35K21.75 mi0.75 mi25908+111011-411011-425676(Top 96%)10986(Top 96%)10986(Top 225%)
23M23.00 mi1.25 mi26033-12511084-7311084-7326575(Top 100%)11406(Top 100%)11406(Top 234%)
24M24.00 mi1.00 mi26064-3111108-2411108-2426209(Top 98%)11256(Top 99%)11256(Top 230%)
40K24.85 mi0.85 mi26126-6211148-4011148-4026537(Top 100%)11393(Top 100%)11393(Top 233%)
25.2M25.20 mi0.35 mi26120+611145+311145+325530(Top 96%)10944(Top 96%)10944(Top 224%)
Finish26.22 mi1.02 mi26101+1911133+1211133+1225386(Top 95%)10863(Top 95%)10863(Top 222%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21story building
+97ft-345ft

Overall

25560

Females

10786

F18-39

10786

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

25988

Females

11034

F18-39

11034

10K→15K

6.2 - 9.3 mi

Top 96%
×3story building
+67ft-78ft

Overall

25560

Females

10786

F18-39

10786

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

25749

Females

10919

F18-39

10919

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

26135

Females

11141

F18-39

11141

Half→25K

13.1 - 15.5 mi

Top 97%
×4story building
+66ft-88ft

Overall

25865

Females

11003

F18-39

11003

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

26311

Females

11260

F18-39

11260

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

26046

Females

11151

F18-39

11151

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

26504

Females

11360

F18-39

11360

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

25676

Females

10986

F18-39

10986

35K→23M

21.8 - 23.0 mi

Top 100%
×5story building
+23ft-63ft

Overall

26575

Females

11406

F18-39

11406

23M→24M

23.0 - 24.0 mi

Top 98%
×6story building
+12ft-82ft

Overall

26209

Females

11256

F18-39

11256

24M→40K

24.0 - 24.9 mi

Top 100%
×1story
+6ft-20ft

Overall

26537

Females

11393

F18-39

11393

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25530

Females

10944

F18-39

10944

25.2M→Finish

25.2 - 26.2 mi

Top 95%
×2story building
+22ft-21ft

Overall

25386

Females

10863

F18-39

10863

Passing Analysis

Category:
Athletes Passed
149
Passed By
4660
Net Change
-4511
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21590
5K → 10K12952-2951#21590#24541
10K → 15K11515-504#24541#25045
15K → 20K30331-301#25045#25346
20K → Half477-73#25346#25419
Half → 25K20155-135#25419#25554
25K → 30K13233-220#25554#25774
30K → 20M1954-35#25774#25809
20M → 21M0100-100#25809#25909
21M → 35K1615+1#25909#25908
35K → 23M0125-125#25908#26033
23M → 24M637-31#26033#26064
24M → 40K163-62#26064#26126
40K → 25.2M82+6#26126#26120
25.2M → Finish201+19#26120#26101
TOTALS1494660-4511
📊

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