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BOSTON MARATHON 2023

Kristen Shaver

Bib: 18839•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 50%
Gender (Female)
#0 / 11423
Top 33%
Masters (Masters Women)
#0 / 6539
Top 20%
Division (F40-44)
#0 / 1878
Top 37%
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
8:25/mi
26:10
↑ 97↓ 3451.5%
10K· 6.21 mi
8:09/mi
51:29
↑ 79↓ 1380.4%
15K· 9.32 mi
8:12/mi
1:16:57
↑ 67↓ 78
20K· 12.43 mi
8:09/mi
1:42:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:47:44
↑ 19↓ 370.5%
25K· 15.53 mi
8:08/mi
2:07:27
↑ 66↓ 880.2%
30K· 18.64 mi
8:14/mi
2:33:02
↑ 181↓ 1480.2%
20M
8:12/mi
2:44:11
↑ 64↓ 500.2%
21M
8:21/mi
2:52:32
↑ 106↓ 241.6%
35K· 21.75 mi
7:46/mi
2:58:21
↑ 17↓ 861.7%
23M
8:05/mi
3:08:28
↑ 23↓ 630.6%
24M
7:43/mi
3:16:11
↓ 821.3%
40K· 24.85 mi
7:50/mi
3:22:53
↓ 200.3%
25.2M
8:27/mi
3:25:48
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:33:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:47:44
Pace8:13 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:45:47
Pace8:04 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4626:108:2526:10
8:25
-
10K
6.21 mi11:43:0551:298:1725:19
8:09
-0:16
15K
9.32 mi12:08:331:16:578:1525:28
8:12
+0:03
20K
12.43 mi12:33:521:42:168:1425:19
8:09
-0:03
Half
13.11 mi12:39:201:47:448:135:28
8:01
-0:08
25K
15.53 mi12:59:032:07:278:1219:43
8:08
+0:07
30K
18.64 mi13:24:382:33:028:1325:35
8:14
+0:06
20M
20.00 mi13:35:472:44:118:1311:09
8:12
-0:02
21M
21.00 mi13:44:082:52:328:138:21
8:21
+0:09
35K
21.75 mi13:49:572:58:218:125:49
7:46
-0:35
23M
23.00 mi14:00:043:08:288:1210:07
8:05
+0:19
24M
24.00 mi14:07:473:16:118:107:43
7:43
-0:22
40K
24.85 mi14:14:293:22:538:106:42
7:50
+0:07
25.2M
25.20 mi14:17:243:25:488:102:55
8:27
+0:37
Finish
26.22 mi14:25:073:33:318:097:43
7:34
-0:53

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

7:34 /mi

Average Pace

8:09 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:05

82% of race

Time at Steady Pace

37:26

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:09 /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 mi11:17:4626:108:2526:10
8:25
#17038
10K
6.21 mi11:43:0551:298:1725:19
8:09
#16400
15K
9.32 mi12:08:331:16:578:1525:28
8:12
#16216
20K
12.43 mi12:33:521:42:168:1425:19
8:09
#15779
Half
13.11 mi12:39:201:47:448:135:28
8:01
#15698
25K
15.53 mi12:59:032:07:278:1219:43
8:08
#15381
30K
18.64 mi13:24:382:33:028:1325:35
8:14
#14882
20M
20.00 mi13:35:472:44:118:1311:09
8:12
#14624
21M
21.00 mi13:44:082:52:328:138:21
8:21
#14329
35K
21.75 mi13:49:572:58:218:125:49
7:46
#14180
23M
23.00 mi14:00:043:08:288:1210:07
8:05
#13917
24M
24.00 mi14:07:473:16:118:107:43
7:43
#13693
40K
24.85 mi14:14:293:22:538:106:42
7:50
#13473
25.2M
25.20 mi14:17:243:25:488:102:55
8:27
#13378
Finish
26.22 mi14:25:073:33:318:097:43
7:34
#13188
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi170385952595215846(Top 60%)5192(Top 45%)5192(Top 276%)
10K6.21 mi3.10 mi16400+6385524+4285524+42815886(Top 60%)5195(Top 45%)5195(Top 277%)
15K9.32 mi3.11 mi16216+1845418+1065418+10615846(Top 60%)5192(Top 45%)5192(Top 276%)
20K12.43 mi3.11 mi15779+4375167+2515167+25114586(Top 55%)4450(Top 39%)4450(Top 237%)
Half13.11 mi0.68 mi15698+815121+465121+4614496(Top 54%)4365(Top 38%)4365(Top 232%)
25K15.53 mi2.42 mi15381+3174950+1714950+17113743(Top 52%)4059(Top 36%)4059(Top 216%)
30K18.64 mi3.11 mi14882+4994668+2824668+28212580(Top 47%)3510(Top 31%)3510(Top 187%)
20M20.00 mi1.36 mi14624+2584538+1304538+13011765(Top 44%)3150(Top 28%)3150(Top 168%)
21M21.00 mi1.00 mi14329+2954401+1374401+1379581(Top 36%)2195(Top 19%)2195(Top 117%)
35K21.75 mi0.75 mi14180+1494319+824319+8210559(Top 40%)2659(Top 23%)2659(Top 142%)
23M23.00 mi1.25 mi13917+2634175+1444175+14410350(Top 39%)2694(Top 24%)2694(Top 143%)
24M24.00 mi1.00 mi13693+2244060+1154060+1159246(Top 35%)2234(Top 20%)2234(Top 119%)
40K24.85 mi0.85 mi13473+2203943+1173943+1178957(Top 34%)2173(Top 19%)2173(Top 116%)
25.2M25.20 mi0.35 mi13378+953897+463897+469370(Top 35%)2429(Top 21%)2429(Top 129%)
Finish26.22 mi1.02 mi13188+1903809+883809+889141(Top 34%)2311(Top 20%)2311(Top 123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21story building
+97ft-345ft

Overall

15846

Females

5192

F40-44

5192

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

15886

Females

5195

F40-44

5195

10K→15K

6.2 - 9.3 mi

Top 60%
×3story building
+67ft-78ft

Overall

15846

Females

5192

F40-44

5192

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14586

Females

4450

F40-44

4450

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

14496

Females

4365

F40-44

4365

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13743

Females

4059

F40-44

4059

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12580

Females

3510

F40-44

3510

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11765

Females

3150

F40-44

3150

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9581

Females

2195

F40-44

2195

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10559

Females

2659

F40-44

2659

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10350

Females

2694

F40-44

2694

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9246

Females

2234

F40-44

2234

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8957

Females

2173

F40-44

2173

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9370

Females

2429

F40-44

2429

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9141

Females

2311

F40-44

2311

Passing Analysis

Category:
Athletes Passed
4139
Passed By
289
Net Change
+3850
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17038
5K → 10K73294+638#17038#16400
10K → 15K290106+184#16400#16216
15K → 20K45922+437#16216#15779
20K → Half854+81#15779#15698
Half → 25K33417+317#15698#15381
25K → 30K51213+499#15381#14882
30K → 20M2602+258#14882#14624
20M → 21M2972+295#14624#14329
21M → 35K1523+149#14329#14180
35K → 23M2707+263#14180#13917
23M → 24M2262+224#13917#13693
24M → 40K2233+220#13693#13473
40K → 25.2M994+95#13473#13378
25.2M → Finish20010+190#13378#13188
TOTALS4139289+3850
📊

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