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BOSTON MARATHON 2023

Rebecca Forrester

Bib: 20885•F

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
8:35/mi
26:41
↑ 97↓ 3451.5%
10K· 6.21 mi
8:27/mi
52:56
↑ 79↓ 1380.4%
15K· 9.32 mi
8:39/mi
1:19:48
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:47:15
↑ 106↓ 860.1%
Half· 13.11 mi
8:40/mi
1:53:10
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:14:57
↑ 66↓ 880.2%
30K· 18.64 mi
9:15/mi
2:43:41
↑ 181↓ 1480.2%
20M
9:22/mi
2:56:25
↑ 64↓ 500.2%
21M
10:12/mi
3:06:37
↑ 106↓ 241.6%
35K· 21.75 mi
8:45/mi
3:13:10
↑ 17↓ 861.7%
23M
9:09/mi
3:24:37
↑ 23↓ 630.6%
24M
9:04/mi
3:33:41
↓ 821.3%
40K· 24.85 mi
9:14/mi
3:41:35
↓ 200.3%
25.2M
10:21/mi
3:45:09
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
3:54:20
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:10
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time2:01:10
Pace9:15 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3026:418:3526:41
8:35
-
10K
6.21 mi11:49:4552:568:3126:15
8:27
-0:08
15K
9.32 mi12:16:371:19:488:3426:52
8:39
+0:12
20K
12.43 mi12:44:041:47:158:3827:27
8:50
+0:11
Half
13.11 mi12:49:591:53:108:385:55
8:40
-0:10
25K
15.53 mi13:11:462:14:578:4121:47
8:59
+0:19
30K
18.64 mi13:40:302:43:418:4728:44
9:15
+0:16
20M
20.00 mi13:53:142:56:258:4912:44
9:22
+0:07
21M
21.00 mi14:03:263:06:378:5310:12
10:12
+0:50
35K
21.75 mi14:09:593:13:108:536:33
8:45
-1:27
23M
23.00 mi14:21:263:24:378:5411:27
9:09
+0:24
24M
24.00 mi14:30:303:33:418:549:04
9:04
-0:05
40K
24.85 mi14:38:243:41:358:557:54
9:14
+0:10
25.2M
25.20 mi14:41:583:45:098:563:34
10:21
+1:07
Finish
26.22 mi14:51:093:54:208:579:11
9:01
-1:20

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

8:57 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:16

39% of race

Time at Steady Pace

1:55:34

49% of race

Time at Slower Pace

26:30

11% of race

Average Pace: 8:56 /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 mi11:23:3026:418:3526:41
8:35
#18170
10K
6.21 mi11:49:4552:568:3126:15
8:27
#18022
15K
9.32 mi12:16:371:19:488:3426:52
8:39
#18245
20K
12.43 mi12:44:041:47:158:3827:27
8:50
#18388
Half
13.11 mi12:49:591:53:108:385:55
8:40
#18399
25K
15.53 mi13:11:462:14:578:4121:47
8:59
#18504
30K
18.64 mi13:40:302:43:418:4728:44
9:15
#18466
20M
20.00 mi13:53:142:56:258:4912:44
9:22
#18451
21M
21.00 mi14:03:263:06:378:5310:12
10:12
#18467
35K
21.75 mi14:09:593:13:108:536:33
8:45
#18388
23M
23.00 mi14:21:263:24:378:5411:27
9:09
#18292
24M
24.00 mi14:30:303:33:418:549:04
9:04
#18262
40K
24.85 mi14:38:243:41:358:557:54
9:14
#18231
25.2M
25.20 mi14:41:583:45:098:563:34
10:21
#18245
Finish
26.22 mi14:51:093:54:208:579:11
9:01
#18229
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi181706665666518720(Top 70%)6937(Top 61%)6937(Top 382%)
10K6.21 mi3.10 mi18022+1486548+1176548+11717933(Top 67%)6441(Top 56%)6441(Top 354%)
15K9.32 mi3.11 mi18245-2236661-1136661-11318720(Top 70%)6937(Top 61%)6937(Top 382%)
20K12.43 mi3.11 mi18388-1436745-846745-8418864(Top 71%)7006(Top 61%)7006(Top 386%)
Half13.11 mi0.68 mi18399-116744+16744+118811(Top 71%)6968(Top 61%)6968(Top 383%)
25K15.53 mi2.42 mi18504-1056833-896833-8918877(Top 71%)7060(Top 62%)7060(Top 389%)
30K18.64 mi3.11 mi18466+386847-146847-1418404(Top 69%)6866(Top 60%)6866(Top 378%)
20M20.00 mi1.36 mi18451+156841+66841+618337(Top 69%)6927(Top 61%)6927(Top 381%)
21M21.00 mi1.00 mi18467-166862-216862-2118724(Top 70%)7179(Top 63%)7179(Top 395%)
35K21.75 mi0.75 mi18388+796831+316831+3116770(Top 63%)6158(Top 54%)6158(Top 339%)
23M23.00 mi1.25 mi18292+966785+466785+4616795(Top 63%)6187(Top 54%)6187(Top 341%)
24M24.00 mi1.00 mi18262+306781+46781+417551(Top 66%)6652(Top 58%)6652(Top 366%)
40K24.85 mi0.85 mi18231+316773+86773+817295(Top 65%)6567(Top 57%)6567(Top 361%)
25.2M25.20 mi0.35 mi18245-146787-146787-1418634(Top 70%)7296(Top 64%)7296(Top 402%)
Finish26.22 mi1.02 mi18229+166784+36784+318051(Top 68%)6932(Top 61%)6932(Top 382%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

18720

Females

6937

F45-49

6937

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

17933

Females

6441

F45-49

6441

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

18720

Females

6937

F45-49

6937

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18864

Females

7006

F45-49

7006

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

18811

Females

6968

F45-49

6968

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18877

Females

7060

F45-49

7060

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18404

Females

6866

F45-49

6866

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18337

Females

6927

F45-49

6927

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

18724

Females

7179

F45-49

7179

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16770

Females

6158

F45-49

6158

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16795

Females

6187

F45-49

6187

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17551

Females

6652

F45-49

6652

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17295

Females

6567

F45-49

6567

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18634

Females

7296

F45-49

7296

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18051

Females

6932

F45-49

6932

Passing Analysis

Category:
Athletes Passed
1541
Passed By
1600
Net Change
-59
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18170
5K → 10K400252+148#18170#18022
10K → 15K107330-223#18022#18245
15K → 20K114257-143#18245#18388
20K → Half2940-11#18388#18399
Half → 25K91196-105#18399#18504
25K → 30K195157+38#18504#18466
30K → 20M9681+15#18466#18451
20M → 21M8096-16#18451#18467
21M → 35K9213+79#18467#18388
35K → 23M12933+96#18388#18292
23M → 24M6737+30#18292#18262
24M → 40K6837+31#18262#18231
40K → 25.2M2135-14#18231#18245
25.2M → Finish5236+16#18245#18229
TOTALS15411600-59
📊

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