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BOSTON MARATHON 2023

Caralei Peters Wiersma

Bib: 22610•F

ON

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
8:57/mi
27:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:49/mi
55:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:51/mi
1:22:39
↑ 67↓ 78
20K· 12.43 mi
8:58/mi
1:50:30
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:56:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:53/mi
2:17:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:02/mi
2:46:03
↑ 181↓ 1480.2%
20M
9:10/mi
2:58:31
↑ 64↓ 500.2%
21M
9:40/mi
3:08:11
↑ 106↓ 241.6%
35K· 21.75 mi
9:01/mi
3:14:56
↑ 17↓ 861.7%
23M
9:17/mi
3:26:33
↑ 23↓ 630.6%
24M
9:07/mi
3:35:40
↓ 821.3%
40K· 24.85 mi
9:03/mi
3:43:24
↓ 200.3%
25.2M
9:31/mi
3:46:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:39/mi
3:55:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:27
Pace8:53 /mi
2nd Half
Distance13.11 mi
Time1:59:03
Pace9:05 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4527:488:5727:48
8:57
-
10K
6.21 mi11:51:0755:108:5327:22
8:49
-0:08
15K
9.32 mi12:18:361:22:398:5227:29
8:51
+0:02
20K
12.43 mi12:46:271:50:308:5327:51
8:58
+0:07
Half
13.11 mi12:52:241:56:278:535:57
8:43
-0:15
25K
15.53 mi13:13:562:17:598:5321:32
8:53
+0:10
30K
18.64 mi13:42:002:46:038:5428:04
9:02
+0:09
20M
20.00 mi13:54:282:58:318:5612:28
9:10
+0:08
21M
21.00 mi14:04:083:08:118:589:40
9:40
+0:30
35K
21.75 mi14:10:533:14:568:586:45
9:01
-0:39
23M
23.00 mi14:22:303:26:338:5911:37
9:17
+0:16
24M
24.00 mi14:31:373:35:408:599:07
9:07
-0:10
40K
24.85 mi14:39:213:43:248:597:44
9:03
-0:04
25.2M
25.20 mi14:42:383:46:419:003:17
9:31
+0:28
Finish
26.22 mi14:51:273:55:308:598:49
8:39
-0:52

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

8:39 /mi

Average Pace

8:59 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:42:33

95% of race

Time at Steady Pace

12:57

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:59 /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 mi11:23:4527:488:5727:48
8:57
#20209
10K
6.21 mi11:51:0755:108:5327:22
8:49
#20074
15K
9.32 mi12:18:361:22:398:5227:29
8:51
#19965
20K
12.43 mi12:46:271:50:308:5327:51
8:58
#19821
Half
13.11 mi12:52:241:56:278:535:57
8:43
#19777
25K
15.53 mi13:13:562:17:598:5321:32
8:53
#19532
30K
18.64 mi13:42:002:46:038:5428:04
9:02
#19141
20M
20.00 mi13:54:282:58:318:5612:28
9:10
#18997
21M
21.00 mi14:04:083:08:118:589:40
9:40
#18866
35K
21.75 mi14:10:533:14:568:586:45
9:01
#18829
23M
23.00 mi14:22:303:26:338:5911:37
9:17
#18726
24M
24.00 mi14:31:373:35:408:599:07
9:07
#18682
40K
24.85 mi14:39:213:43:248:597:44
9:03
#18591
25.2M
25.20 mi14:42:383:46:419:003:17
9:31
#18534
Finish
26.22 mi14:51:273:55:308:598:49
8:39
#18457
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi202097943794319775(Top 74%)7548(Top 66%)7548(Top 415%)
10K6.21 mi3.10 mi20074+1357806+1377806+13719974(Top 75%)7679(Top 67%)7679(Top 423%)
15K9.32 mi3.11 mi19965+1097715+917715+9119775(Top 74%)7548(Top 66%)7548(Top 415%)
20K12.43 mi3.11 mi19821+1447614+1017614+10119534(Top 73%)7398(Top 65%)7398(Top 407%)
Half13.11 mi0.68 mi19777+447580+347580+3419092(Top 72%)7134(Top 62%)7134(Top 393%)
25K15.53 mi2.42 mi19532+2457439+1417439+14118374(Top 69%)6769(Top 59%)6769(Top 373%)
30K18.64 mi3.11 mi19141+3917221+2187221+21817371(Top 65%)6289(Top 55%)6289(Top 346%)
20M20.00 mi1.36 mi18997+1447157+647157+6417445(Top 66%)6424(Top 56%)6424(Top 354%)
21M21.00 mi1.00 mi18866+1317089+687089+6816738(Top 63%)6041(Top 53%)6041(Top 332%)
35K21.75 mi0.75 mi18829+377075+147075+1418024(Top 68%)6855(Top 60%)6855(Top 377%)
23M23.00 mi1.25 mi18726+1037032+437032+4317432(Top 65%)6527(Top 57%)6527(Top 359%)
24M24.00 mi1.00 mi18682+447015+177015+1717756(Top 67%)6781(Top 59%)6781(Top 373%)
40K24.85 mi0.85 mi18591+916975+406975+4016426(Top 62%)6099(Top 53%)6099(Top 336%)
25.2M25.20 mi0.35 mi18534+576945+306945+3015384(Top 58%)5545(Top 49%)5545(Top 305%)
Finish26.22 mi1.02 mi18457+776908+376908+3716286(Top 61%)5993(Top 52%)5993(Top 330%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19775

Females

7548

F45-49

7548

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

19974

Females

7679

F45-49

7679

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19775

Females

7548

F45-49

7548

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19534

Females

7398

F45-49

7398

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19092

Females

7134

F45-49

7134

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18374

Females

6769

F45-49

6769

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17371

Females

6289

F45-49

6289

30K→20M

18.6 - 20.0 mi

Top 66%
×5story building
+64ft-50ft

Overall

17445

Females

6424

F45-49

6424

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

16738

Females

6041

F45-49

6041

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18024

Females

6855

F45-49

6855

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

17432

Females

6527

F45-49

6527

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17756

Females

6781

F45-49

6781

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16426

Females

6099

F45-49

6099

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15384

Females

5545

F45-49

5545

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

16286

Females

5993

F45-49

5993

Passing Analysis

Category:
Athletes Passed
2464
Passed By
712
Net Change
+1752
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20209
5K → 10K393258+135#20209#20074
10K → 15K244135+109#20074#19965
15K → 20K246102+144#19965#19821
20K → Half5410+44#19821#19777
Half → 25K26318+245#19777#19532
25K → 30K41625+391#19532#19141
30K → 20M16218+144#19141#18997
20M → 21M15221+131#18997#18866
21M → 35K6528+37#18866#18829
35K → 23M13229+103#18829#18726
23M → 24M7834+44#18726#18682
24M → 40K10110+91#18682#18591
40K → 25.2M636+57#18591#18534
25.2M → Finish9518+77#18534#18457
TOTALS2464712+1752
📊

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