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BOSTON MARATHON 2023

Alexandra Dreu

Bib: 19881•F

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
8:37/mi
26:45
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
53:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:27/mi
1:19:25
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:45:52
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:51:41
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:12:32
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:40:44
↑ 181↓ 1480.2%
20M
9:22/mi
2:53:28
↑ 64↓ 500.2%
21M
11:55/mi
3:05:23
↑ 106↓ 241.6%
35K· 21.75 mi
9:31/mi
3:12:30
↑ 17↓ 861.7%
23M
10:00/mi
3:25:01
↑ 23↓ 630.6%
24M
9:45/mi
3:34:46
↓ 821.3%
40K· 24.85 mi
9:54/mi
3:43:14
↓ 200.3%
25.2M
10:47/mi
3:46:57
↑ 13↓ 160.2%
Finish· 26.22 mi
9:31/mi
3:56:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:41
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time2:04:58
Pace9:32 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5026:458:3726:45
8:37
-
10K
6.21 mi11:45:1553:108:3326:25
8:30
-0:07
15K
9.32 mi12:11:301:19:258:3126:15
8:27
-0:03
20K
12.43 mi12:37:571:45:528:3126:27
8:31
+0:04
Half
13.11 mi12:43:461:51:418:315:49
8:32
+0:01
25K
15.53 mi13:04:372:12:328:3220:51
8:36
+0:04
30K
18.64 mi13:32:492:40:448:3728:12
9:05
+0:29
20M
20.00 mi13:45:332:53:288:4012:44
9:22
+0:17
21M
21.00 mi13:57:283:05:238:5011:55
11:55
+2:33
35K
21.75 mi14:04:353:12:308:517:07
9:31
-2:24
23M
23.00 mi14:17:063:25:018:5512:31
10:00
+0:29
24M
24.00 mi14:26:513:34:468:579:45
9:45
-0:15
40K
24.85 mi14:35:193:43:148:598:28
9:54
+0:09
25.2M
25.20 mi14:39:023:46:579:003:43
10:47
+0:53
Finish
26.22 mi14:48:443:56:399:029:42
9:31
-1:16

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

9:02 /mi

Slowest Pace

11:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:32

56% of race

Time at Steady Pace

1:07:30

29% of race

Time at Slower Pace

36:37

15% of race

Average Pace: 9:02 /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 mi11:18:5026:458:3726:45
8:37
#18305
10K
6.21 mi11:45:1553:108:3326:25
8:30
#18236
15K
9.32 mi12:11:301:19:258:3126:15
8:27
#17974
20K
12.43 mi12:37:571:45:528:3126:27
8:31
#17688
Half
13.11 mi12:43:461:51:418:315:49
8:32
#17680
25K
15.53 mi13:04:372:12:328:3220:51
8:36
#17527
30K
18.64 mi13:32:492:40:448:3728:12
9:05
#17500
20M
20.00 mi13:45:332:53:288:4012:44
9:22
#17567
21M
21.00 mi13:57:283:05:238:5011:55
11:55
#18138
35K
21.75 mi14:04:353:12:308:517:07
9:31
#18235
23M
23.00 mi14:17:063:25:018:5512:31
10:00
#18381
24M
24.00 mi14:26:513:34:468:579:45
9:45
#18494
40K
24.85 mi14:35:193:43:148:598:28
9:54
#18558
25.2M
25.20 mi14:39:023:46:579:003:43
10:47
#18600
Finish
26.22 mi14:48:443:56:399:029:42
9:31
#18698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi183056746674617476(Top 66%)6200(Top 54%)6200(Top 341%)
10K6.21 mi3.10 mi18236+696660+866660+8618282(Top 69%)6649(Top 58%)6649(Top 366%)
15K9.32 mi3.11 mi17974+2626511+1496511+14917476(Top 66%)6200(Top 54%)6200(Top 341%)
20K12.43 mi3.11 mi17688+2866337+1746337+17416964(Top 64%)5911(Top 52%)5911(Top 325%)
Half13.11 mi0.68 mi17680+86332+56332+517911(Top 67%)6440(Top 56%)6440(Top 354%)
25K15.53 mi2.42 mi17527+1536254+786254+7816815(Top 63%)5905(Top 52%)5905(Top 325%)
30K18.64 mi3.11 mi17500+276256-26256-217589(Top 66%)6410(Top 56%)6410(Top 353%)
20M20.00 mi1.36 mi17567-676316-606316-6018344(Top 69%)6934(Top 61%)6934(Top 382%)
21M21.00 mi1.00 mi18138-5716685-3696685-36922624(Top 85%)9346(Top 82%)9346(Top 514%)
35K21.75 mi0.75 mi18235-976746-616746-6119896(Top 75%)7864(Top 69%)7864(Top 433%)
23M23.00 mi1.25 mi18381-1466838-926838-9219983(Top 75%)7944(Top 70%)7944(Top 437%)
24M24.00 mi1.00 mi18494-1136904-666904-6620063(Top 75%)8003(Top 70%)8003(Top 440%)
40K24.85 mi0.85 mi18558-646953-496953-4919707(Top 74%)7893(Top 69%)7893(Top 434%)
25.2M25.20 mi0.35 mi18600-426981-286981-2819926(Top 75%)8015(Top 70%)8015(Top 441%)
Finish26.22 mi1.02 mi18698-987049-687049-6820203(Top 76%)8120(Top 71%)8120(Top 447%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17476

Females

6200

F45-49

6200

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18282

Females

6649

F45-49

6649

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17476

Females

6200

F45-49

6200

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16964

Females

5911

F45-49

5911

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17911

Females

6440

F45-49

6440

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16815

Females

5905

F45-49

5905

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

17589

Females

6410

F45-49

6410

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18344

Females

6934

F45-49

6934

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

22624

Females

9346

F45-49

9346

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

19896

Females

7864

F45-49

7864

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19983

Females

7944

F45-49

7944

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

20063

Females

8003

F45-49

8003

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19707

Females

7893

F45-49

7893

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19926

Females

8015

F45-49

8015

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20203

Females

8120

F45-49

8120

Passing Analysis

Category:
Athletes Passed
1666
Passed By
2059
Net Change
-393
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18305
5K → 10K348279+69#18305#18236
10K → 15K35088+262#18236#17974
15K → 20K34054+286#17974#17688
20K → Half3325+8#17688#17680
Half → 25K20148+153#17680#17527
25K → 30K179152+27#17527#17500
30K → 20M61128-67#17500#17567
20M → 21M6577-571#17567#18138
21M → 35K22119-97#18138#18235
35K → 23M38184-146#18235#18381
23M → 24M21134-113#18381#18494
24M → 40K36100-64#18494#18558
40K → 25.2M1153-42#18558#18600
25.2M → Finish20118-98#18600#18698
TOTALS16662059-393
📊

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