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BOSTON MARATHON 2023

Rebecca Stern

Bib: 27332•F

MA

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
10:18/mi
32:01
↑ 97↓ 3451.5%
10K· 6.21 mi
10:32/mi
1:04:46
↑ 79↓ 1380.4%
15K· 9.32 mi
10:05/mi
1:36:06
↑ 67↓ 78
20K· 12.43 mi
10:37/mi
2:09:06
↑ 106↓ 860.1%
Half· 13.11 mi
9:57/mi
2:15:53
↑ 19↓ 370.5%
25K· 15.53 mi
10:28/mi
2:41:15
↑ 66↓ 880.2%
30K· 18.64 mi
11:30/mi
3:16:58
↑ 181↓ 1480.2%
20M
10:46/mi
3:31:36
↑ 64↓ 500.2%
21M
11:30/mi
3:43:06
↑ 106↓ 241.6%
35K· 21.75 mi
12:12/mi
3:52:14
↑ 17↓ 861.7%
23M
10:53/mi
4:05:51
↑ 23↓ 630.6%
24M
10:54/mi
4:16:45
↓ 821.3%
40K· 24.85 mi
11:20/mi
4:26:26
↓ 200.3%
25.2M
11:50/mi
4:30:31
↑ 13↓ 160.2%
Finish· 26.22 mi
9:52/mi
4:40:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:15:53
Pace10:22 /mi
2nd Half
Distance13.11 mi
Time2:24:41
Pace11:02 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1332:0110:1832:01
10:18
-
10K
6.21 mi12:22:581:04:4610:2532:45
10:32
+0:14
15K
9.32 mi12:54:181:36:0610:1931:20
10:05
-0:27
20K
12.43 mi13:27:182:09:0610:2333:00
10:37
+0:32
Half
13.11 mi13:34:052:15:5310:226:47
9:57
-0:40
25K
15.53 mi13:59:272:41:1510:2325:22
10:28
+0:31
30K
18.64 mi14:35:103:16:5810:3435:43
11:30
+1:02
20M
20.00 mi14:49:483:31:3610:3514:38
10:46
-0:44
21M
21.00 mi15:01:183:43:0610:3711:30
11:30
+0:44
35K
21.75 mi15:10:263:52:1410:419:08
12:12
+0:42
23M
23.00 mi15:24:034:05:5110:4113:37
10:53
-1:19
24M
24.00 mi15:34:574:16:4510:4210:54
10:54
+0:01
40K
24.85 mi15:44:384:26:2610:439:41
11:20
+0:26
25.2M
25.20 mi15:48:434:30:3110:444:05
11:50
+0:30
Finish
26.22 mi15:58:464:40:3410:4310:03
9:52
-1:58

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

9:52 /mi

Average Pace

10:43 /mi

Slowest Pace

12:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:11

29% of race

Time at Steady Pace

2:10:16

46% of race

Time at Slower Pace

1:10:07

25% of race

Average Pace: 10:42 /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 mi11:50:1332:0110:1832:01
10:18
#24237
10K
6.21 mi12:22:581:04:4610:2532:45
10:32
#24537
15K
9.32 mi12:54:181:36:0610:1931:20
10:05
#24241
20K
12.43 mi13:27:182:09:0610:2333:00
10:37
#24196
Half
13.11 mi13:34:052:15:5310:226:47
9:57
#24138
25K
15.53 mi13:59:272:41:1510:2325:22
10:28
#23927
30K
18.64 mi14:35:103:16:5810:3435:43
11:30
#23935
20M
20.00 mi14:49:483:31:3610:3514:38
10:46
#23815
21M
21.00 mi15:01:183:43:0610:3711:30
11:30
#23701
35K
21.75 mi15:10:263:52:1410:419:08
12:12
#23788
23M
23.00 mi15:24:034:05:5110:4113:37
10:53
#23714
24M
24.00 mi15:34:574:16:4510:4210:54
10:54
#23677
40K
24.85 mi15:44:384:26:2610:439:41
11:20
#23661
25.2M
25.20 mi15:48:434:30:3110:444:05
11:50
#23641
Finish
26.22 mi15:58:464:40:3410:4310:03
9:52
#23577
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi24237100061000623674(Top 89%)9706(Top 85%)9706(Top 517%)
10K6.21 mi3.10 mi24537-30010180-17410180-17424752(Top 93%)10301(Top 90%)10301(Top 549%)
15K9.32 mi3.11 mi24241+29610024+15610024+15623674(Top 89%)9706(Top 85%)9706(Top 517%)
20K12.43 mi3.11 mi24196+459998+269998+2624049(Top 90%)9937(Top 87%)9937(Top 529%)
Half13.11 mi0.68 mi24138+589975+239975+2323182(Top 87%)9461(Top 83%)9461(Top 504%)
25K15.53 mi2.42 mi23927+2119860+1159860+11523135(Top 87%)9461(Top 83%)9461(Top 504%)
30K18.64 mi3.11 mi23935-89880-209880-2023860(Top 90%)9939(Top 87%)9939(Top 529%)
20M20.00 mi1.36 mi23815+1209823+579823+5722298(Top 84%)9141(Top 80%)9141(Top 487%)
21M21.00 mi1.00 mi23701+1149773+509773+5021894(Top 82%)8943(Top 78%)8943(Top 476%)
35K21.75 mi0.75 mi23788-879827-549827-5424894(Top 94%)10602(Top 93%)10602(Top 565%)
23M23.00 mi1.25 mi23714+749793+349793+3422119(Top 83%)9131(Top 80%)9131(Top 486%)
24M24.00 mi1.00 mi23677+379787+69787+622863(Top 86%)9560(Top 84%)9560(Top 509%)
40K24.85 mi0.85 mi23661+169783+49783+422936(Top 86%)9630(Top 84%)9630(Top 513%)
25.2M25.20 mi0.35 mi23641+209772+119772+1122243(Top 84%)9263(Top 81%)9263(Top 493%)
Finish26.22 mi1.02 mi23577+649751+219751+2121384(Top 80%)8777(Top 77%)8777(Top 467%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23674

Females

9706

F40-44

9706

5K→10K

3.1 - 6.2 mi

Top 93%
×5story building
+79ft-138ft

Overall

24752

Females

10301

F40-44

10301

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23674

Females

9706

F40-44

9706

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

24049

Females

9937

F40-44

9937

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

23182

Females

9461

F40-44

9461

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23135

Females

9461

F40-44

9461

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23860

Females

9939

F40-44

9939

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

22298

Females

9141

F40-44

9141

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

21894

Females

8943

F40-44

8943

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

24894

Females

10602

F40-44

10602

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

22119

Females

9131

F40-44

9131

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

22863

Females

9560

F40-44

9560

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

22936

Females

9630

F40-44

9630

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22243

Females

9263

F40-44

9263

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

21384

Females

8777

F40-44

8777

Passing Analysis

Category:
Athletes Passed
1452
Passed By
792
Net Change
+660
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24237
5K → 10K87387-300#24237#24537
10K → 15K32630+296#24537#24241
15K → 20K12782+45#24241#24196
20K → Half613+58#24196#24138
Half → 25K2187+211#24138#23927
25K → 30K116124-8#23927#23935
30K → 20M1244+120#23935#23815
20M → 21M1217+114#23815#23701
21M → 35K390-87#23701#23788
35K → 23M806+74#23788#23714
23M → 24M5720+37#23714#23677
24M → 40K3822+16#23677#23661
40K → 25.2M255+20#23661#23641
25.2M → Finish695+64#23641#23577
TOTALS1452792+660
📊

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