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BOSTON MARATHON 2023

Amy Alexander

Bib: 16939•F

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0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
8:39/mi
26:53
↑ 97↓ 3451.5%
10K· 6.21 mi
8:27/mi
53:08
↑ 79↓ 1380.4%
15K· 9.32 mi
8:29/mi
1:19:30
↑ 67↓ 78
20K· 12.43 mi
8:56/mi
1:47:14
↑ 106↓ 860.1%
Half· 13.11 mi
8:36/mi
1:53:06
↑ 19↓ 370.5%
25K· 15.53 mi
10:09/mi
2:17:43
↑ 66↓ 880.2%
30K· 18.64 mi
9:58/mi
2:48:40
↑ 181↓ 1480.2%
20M
9:58/mi
3:02:12
↑ 64↓ 500.2%
21M
11:31/mi
3:13:43
↑ 106↓ 241.6%
35K· 21.75 mi
9:33/mi
3:20:52
↑ 17↓ 861.7%
23M
9:50/mi
3:33:11
↑ 23↓ 630.6%
24M
9:54/mi
3:43:05
↓ 821.3%
40K· 24.85 mi
10:51/mi
3:52:22
↓ 200.3%
25.2M
11:21/mi
3:56:17
↑ 13↓ 160.2%
Finish· 26.22 mi
9:42/mi
4:06:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:06
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time2:13:04
Pace10:09 /mi
📊Positive Split: 17.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4726:538:3926:53
8:39
-
10K
6.21 mi11:45:0253:088:3326:15
8:27
-0:12
15K
9.32 mi12:11:241:19:308:3226:22
8:29
+0:02
20K
12.43 mi12:39:081:47:148:3827:44
8:56
+0:27
Half
13.11 mi12:45:001:53:068:385:52
8:36
-0:20
25K
15.53 mi13:09:372:17:438:5224:37
10:09
+1:33
30K
18.64 mi13:40:342:48:409:0330:57
9:58
-0:11
20M
20.00 mi13:54:063:02:129:0713:32
9:58
0:00
21M
21.00 mi14:05:373:13:439:1311:31
11:31
+1:33
35K
21.75 mi14:12:463:20:529:147:09
9:33
-1:58
23M
23.00 mi14:25:053:33:119:1612:19
9:50
+0:17
24M
24.00 mi14:34:593:43:059:189:54
9:54
+0:04
40K
24.85 mi14:44:163:52:229:219:17
10:51
+0:57
25.2M
25.20 mi14:48:113:56:179:233:55
11:21
+0:30
Finish
26.22 mi14:58:044:06:109:249:53
9:42
-1:39

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

8:27 /mi

Average Pace

9:24 /mi

Slowest Pace

11:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:06

46% of race

Time at Steady Pace

1:48:21

44% of race

Time at Slower Pace

24:43

10% of race

Average Pace: 9:23 /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 mi11:18:4726:538:3926:53
8:39
#18603
10K
6.21 mi11:45:0253:088:3326:15
8:27
#18209
15K
9.32 mi12:11:241:19:308:3226:22
8:29
#18053
20K
12.43 mi12:39:081:47:148:3827:44
8:56
#18382
Half
13.11 mi12:45:001:53:068:385:52
8:36
#18367
25K
15.53 mi13:09:372:17:438:5224:37
10:09
#19435
30K
18.64 mi13:40:342:48:409:0330:57
9:58
#19812
20M
20.00 mi13:54:063:02:129:0713:32
9:58
#19859
21M
21.00 mi14:05:373:13:439:1311:31
11:31
#20053
35K
21.75 mi14:12:463:20:529:147:09
9:33
#20051
23M
23.00 mi14:25:053:33:119:1612:19
9:50
#20014
24M
24.00 mi14:34:593:43:059:189:54
9:54
#20061
40K
24.85 mi14:44:163:52:229:219:17
10:51
#20152
25.2M
25.20 mi14:48:113:56:179:233:55
11:21
#20165
Finish
26.22 mi14:58:044:06:109:249:53
9:42
#20177
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi186036939693917734(Top 67%)6360(Top 56%)6360(Top 339%)
10K6.21 mi3.10 mi18209+3946648+2916648+29117938(Top 67%)6446(Top 56%)6446(Top 343%)
15K9.32 mi3.11 mi18053+1566562+866562+8617734(Top 67%)6360(Top 56%)6360(Top 339%)
20K12.43 mi3.11 mi18382-3296742-1806742-18019357(Top 73%)7301(Top 64%)7301(Top 389%)
Half13.11 mi0.68 mi18367+156725+176725+1718398(Top 69%)6733(Top 59%)6733(Top 359%)
25K15.53 mi2.42 mi19435-10687380-6557380-65522523(Top 85%)9128(Top 80%)9128(Top 486%)
30K18.64 mi3.11 mi19812-3777621-2417621-24120923(Top 79%)8301(Top 73%)8301(Top 442%)
20M20.00 mi1.36 mi19859-477657-367657-3620375(Top 77%)8065(Top 71%)8065(Top 429%)
21M21.00 mi1.00 mi20053-1947777-1207777-12021916(Top 82%)8948(Top 78%)8948(Top 476%)
35K21.75 mi0.75 mi20051+27786-97786-920044(Top 75%)7959(Top 70%)7959(Top 424%)
23M23.00 mi1.25 mi20014+377776+107776+1019545(Top 73%)7709(Top 67%)7709(Top 410%)
24M24.00 mi1.00 mi20061-477813-377813-3720514(Top 77%)8268(Top 72%)8268(Top 440%)
40K24.85 mi0.85 mi20152-917871-587871-5822059(Top 83%)9174(Top 80%)9174(Top 488%)
25.2M25.20 mi0.35 mi20165-137890-197890-1921267(Top 80%)8730(Top 76%)8730(Top 465%)
Finish26.22 mi1.02 mi20177-127904-147904-1420803(Top 78%)8464(Top 74%)8464(Top 451%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17734

Females

6360

F40-44

6360

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17938

Females

6446

F40-44

6446

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17734

Females

6360

F40-44

6360

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19357

Females

7301

F40-44

7301

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

18398

Females

6733

F40-44

6733

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22523

Females

9128

F40-44

9128

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

20923

Females

8301

F40-44

8301

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20375

Females

8065

F40-44

8065

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

21916

Females

8948

F40-44

8948

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

20044

Females

7959

F40-44

7959

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19545

Females

7709

F40-44

7709

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20514

Females

8268

F40-44

8268

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22059

Females

9174

F40-44

9174

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21267

Females

8730

F40-44

8730

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20803

Females

8464

F40-44

8464

Passing Analysis

Category:
Athletes Passed
1404
Passed By
2978
Net Change
-1574
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18603
5K → 10K578184+394#18603#18209
10K → 15K277121+156#18209#18053
15K → 20K85414-329#18053#18382
20K → Half4025+15#18382#18367
Half → 25K91077-1068#18367#19435
25K → 30K81458-377#19435#19812
30K → 20M69116-47#19812#19859
20M → 21M31225-194#19859#20053
21M → 35K4745+2#20053#20051
35K → 23M8952+37#20051#20014
23M → 24M3380-47#20014#20061
24M → 40K19110-91#20061#20152
40K → 25.2M1427-13#20152#20165
25.2M → Finish3244-12#20165#20177
TOTALS14042978-1574
📊

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