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BOSTON MARATHON 2023

Janet Boltz

Bib: 17779•F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 39%
Masters (Masters Women)
#0 / 6539
Top 26%
Division (F40-44)
#0 / 1878
Top 47%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:02
Rank: #16725
Start → 5K
26:02 | 8:23/mi
10K· 6.21 mi
51:47
Rank: #16737 (-12)
5K → 10K
25:45 | 8:17/mi
15K· 9.32 mi
1:17:29
Rank: #16606 (+131)
10K → 15K
25:42 | 8:16/mi
20K· 12.43 mi
1:43:21
Rank: #16405 (+201)
15K → 20K
25:52 | 8:20/mi
Half· 13.11 mi
1:48:53
Rank: #16330 (+75)
20K → Half
5:32 | 8:07/mi
25K· 15.53 mi
2:08:48
Rank: #15976 (+354)
Half → 25K
19:55 | 8:13/mi
30K· 18.64 mi
2:34:35
Rank: #15421 (+555)
25K → 30K
25:47 | 8:18/mi
20M
2:45:53
Rank: #15194 (+227)
30K → 20M
11:18 | 8:19/mi
21M
2:54:40
Rank: #15006 (+188)
20M → 21M
8:47 | 8:47/mi
35K· 21.75 mi
3:00:40
Rank: #14899 (+107)
21M → 35K
6:00 | 8:01/mi
23M
3:11:12
Rank: #14762 (+137)
35K → 23M
10:32 | 8:25/mi
24M
3:19:18
Rank: #14605 (+157)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:26:22
Rank: #14494 (+111)
24M → 40K
7:04 | 8:16/mi
25.2M
3:29:21
Rank: #14430 (+64)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:37:18
Rank: #14269 (+161)
25.2M → Finish
7:57 | 7:48/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:48:53
Pace8:18 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:48:25
Pace8:16 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1426:028:2326:02
8:23
-
10K
6.21 mi11:42:5951:478:2025:45
8:17
-0:06
15K
9.32 mi12:08:411:17:298:1925:42
8:16
-0:01
20K
12.43 mi12:34:331:43:218:1925:52
8:20
+0:04
Half
13.11 mi12:40:051:48:538:185:32
8:07
-0:13
25K
15.53 mi13:00:002:08:488:1719:55
8:13
+0:06
30K
18.64 mi13:25:472:34:358:1825:47
8:18
+0:05
20M
20.00 mi13:37:052:45:538:1811:18
8:19
+0:01
21M
21.00 mi13:45:522:54:408:198:47
8:47
+0:28
35K
21.75 mi13:51:523:00:408:186:00
8:01
-0:46
23M
23.00 mi14:02:243:11:128:1910:32
8:25
+0:24
24M
24.00 mi14:10:303:19:188:188:06
8:06
-0:19
40K
24.85 mi14:17:343:26:228:187:04
8:16
+0:10
25.2M
25.20 mi14:20:333:29:218:182:59
8:39
+0:23
Finish
26.22 mi14:28:303:37:188:187:57
7:48
-0:51

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

7:48 /mi

Average Pace

8:18 /mi

Slowest Pace

8:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:32

95% of race

Time at Steady Pace

11:46

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /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 mi11:17:1426:028:2326:02
8:23
#16725
10K
6.21 mi11:42:5951:478:2025:45
8:17
#16737
15K
9.32 mi12:08:411:17:298:1925:42
8:16
#16606
20K
12.43 mi12:34:331:43:218:1925:52
8:20
#16405
Half
13.11 mi12:40:051:48:538:185:32
8:07
#16330
25K
15.53 mi13:00:002:08:488:1719:55
8:13
#15976
30K
18.64 mi13:25:472:34:358:1825:47
8:18
#15421
20M
20.00 mi13:37:052:45:538:1811:18
8:19
#15194
21M
21.00 mi13:45:522:54:408:198:47
8:47
#15006
35K
21.75 mi13:51:523:00:408:186:00
8:01
#14899
23M
23.00 mi14:02:243:11:128:1910:32
8:25
#14762
24M
24.00 mi14:10:303:19:188:188:06
8:06
#14605
40K
24.85 mi14:17:343:26:228:187:04
8:16
#14494
25.2M
25.20 mi14:20:333:29:218:182:59
8:39
#14430
Finish
26.22 mi14:28:303:37:188:187:57
7:48
#14269
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi167255740574016359(Top 61%)5507(Top 48%)5507(Top 293%)
10K6.21 mi3.10 mi16737-125735+55735+516851(Top 63%)5774(Top 51%)5774(Top 307%)
15K9.32 mi3.11 mi16606+1315666+695666+6916359(Top 61%)5507(Top 48%)5507(Top 293%)
20K12.43 mi3.11 mi16405+2015555+1115555+11115767(Top 59%)5202(Top 46%)5202(Top 277%)
Half13.11 mi0.68 mi16330+755510+455510+4515232(Top 57%)4817(Top 42%)4817(Top 256%)
25K15.53 mi2.42 mi15976+3545321+1895321+18914344(Top 54%)4415(Top 39%)4415(Top 235%)
30K18.64 mi3.11 mi15421+5555029+2925029+29213040(Top 49%)3787(Top 33%)3787(Top 202%)
20M20.00 mi1.36 mi15194+2274901+1284901+12812487(Top 47%)3580(Top 31%)3580(Top 191%)
21M21.00 mi1.00 mi15006+1884798+1034798+10312198(Top 46%)3519(Top 31%)3519(Top 187%)
35K21.75 mi0.75 mi14899+1074747+514747+5112340(Top 46%)3631(Top 32%)3631(Top 193%)
23M23.00 mi1.25 mi14762+1374692+554692+5512696(Top 48%)3909(Top 34%)3909(Top 208%)
24M24.00 mi1.00 mi14605+1574620+724620+7211982(Top 45%)3583(Top 31%)3583(Top 191%)
40K24.85 mi0.85 mi14494+1114572+484572+4811837(Top 44%)3584(Top 31%)3584(Top 191%)
25.2M25.20 mi0.35 mi14430+644546+264546+2610582(Top 40%)3008(Top 26%)3008(Top 160%)
Finish26.22 mi1.02 mi14269+1614469+774469+7710737(Top 40%)3069(Top 27%)3069(Top 163%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16359

Females

5507

F40-44

5507

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

16851

Females

5774

F40-44

5774

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16359

Females

5507

F40-44

5507

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

15767

Females

5202

F40-44

5202

20K→Half

12.4 - 13.1 mi

Top 57%
×2stories
+19ft-37ft

Overall

15232

Females

4817

F40-44

4817

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

14344

Females

4415

F40-44

4415

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13040

Females

3787

F40-44

3787

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12487

Females

3580

F40-44

3580

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12198

Females

3519

F40-44

3519

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12340

Females

3631

F40-44

3631

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12696

Females

3909

F40-44

3909

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

11982

Females

3583

F40-44

3583

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11837

Females

3584

F40-44

3584

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10582

Females

3008

F40-44

3008

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

10737

Females

3069

F40-44

3069

Passing Analysis

Category:
Athletes Passed
3106
Passed By
650
Net Change
+2456
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16725
5K → 10K299311-12#16725#16737
10K → 15K281150+131#16737#16606
15K → 20K27372+201#16606#16405
20K → Half8611+75#16405#16330
Half → 25K36612+354#16330#15976
25K → 30K56813+555#15976#15421
30K → 20M2325+227#15421#15194
20M → 21M20012+188#15194#15006
21M → 35K1125+107#15006#14899
35K → 23M16326+137#14899#14762
23M → 24M1669+157#14762#14605
24M → 40K12413+111#14605#14494
40K → 25.2M651+64#14494#14430
25.2M → Finish17110+161#14430#14269
TOTALS3106650+2456
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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