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BOSTON MARATHON 2023

Jillian Petersen

Bib: 15358•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F40-44)
#0 / 1878
Top 33%
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
7:49/mi
24:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
48:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:13:36
↑ 67↓ 78
20K· 12.43 mi
8:07/mi
1:38:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:44:10
↑ 19↓ 370.5%
25K· 15.53 mi
8:07/mi
2:03:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:13/mi
2:29:23
↑ 181↓ 1480.2%
20M
8:23/mi
2:40:47
↑ 64↓ 500.2%
21M
8:32/mi
2:49:19
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:55:11
↑ 17↓ 861.7%
23M
8:10/mi
3:05:24
↑ 23↓ 630.6%
24M
7:55/mi
3:13:19
↓ 821.3%
40K· 24.85 mi
8:14/mi
3:20:21
↓ 200.3%
25.2M
8:51/mi
3:23:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:05/mi
3:31:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:10
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:47:28
Pace8:12 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3924:177:4924:17
7:49
-
10K
6.21 mi11:18:0448:427:5024:25
7:52
+0:03
15K
9.32 mi11:42:581:13:367:5424:54
8:01
+0:09
20K
12.43 mi12:08:121:38:507:5725:14
8:07
+0:06
Half
13.11 mi12:13:321:44:107:575:20
7:49
-0:18
25K
15.53 mi12:33:122:03:507:5819:40
8:07
+0:18
30K
18.64 mi12:58:452:29:238:0125:33
8:13
+0:06
20M
20.00 mi13:10:092:40:478:0211:24
8:23
+0:10
21M
21.00 mi13:18:412:49:198:048:32
8:32
+0:09
35K
21.75 mi13:24:332:55:118:035:52
7:51
-0:41
23M
23.00 mi13:34:463:05:248:0410:13
8:10
+0:19
24M
24.00 mi13:42:413:13:198:037:55
7:55
-0:15
40K
24.85 mi13:49:433:20:218:047:02
8:14
+0:19
25.2M
25.20 mi13:52:463:23:248:043:03
8:51
+0:37
Finish
26.22 mi14:01:003:31:388:058:14
8:05
-0:46

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

7:49 /mi

Average Pace

8:05 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:35

99% of race

Time at Steady Pace

3:03

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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 mi10:53:3924:177:4924:17
7:49
#12520
10K
6.21 mi11:18:0448:427:5024:25
7:52
#13064
15K
9.32 mi11:42:581:13:367:5424:54
8:01
#13549
20K
12.43 mi12:08:121:38:507:5725:14
8:07
#13728
Half
13.11 mi12:13:321:44:107:575:20
7:49
#13678
25K
15.53 mi12:33:122:03:507:5819:40
8:07
#13654
30K
18.64 mi12:58:452:29:238:0125:33
8:13
#13397
20M
20.00 mi13:10:092:40:478:0211:24
8:23
#13339
21M
21.00 mi13:18:412:49:198:048:32
8:32
#13149
35K
21.75 mi13:24:332:55:118:035:52
7:51
#13055
23M
23.00 mi13:34:463:05:248:0410:13
8:10
#12912
24M
24.00 mi13:42:413:13:198:037:55
7:55
#12801
40K
24.85 mi13:49:433:20:218:047:02
8:14
#12743
25.2M
25.20 mi13:52:463:23:248:043:03
8:51
#12728
Finish
26.22 mi14:01:003:31:388:058:14
8:05
#12725
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi125203173317314499(Top 54%)4380(Top 38%)4380(Top 233%)
10K6.21 mi3.10 mi13064-5443485-3123485-31213646(Top 51%)3820(Top 33%)3820(Top 203%)
15K9.32 mi3.11 mi13549-4853784-2993784-29914499(Top 54%)4380(Top 38%)4380(Top 233%)
20K12.43 mi3.11 mi13728-1793923-1393923-13914374(Top 54%)4327(Top 38%)4327(Top 230%)
Half13.11 mi0.68 mi13678+503893+303893+3012929(Top 49%)3458(Top 30%)3458(Top 184%)
25K15.53 mi2.42 mi13654+243903-103903-1013585(Top 51%)3971(Top 35%)3971(Top 211%)
30K18.64 mi3.11 mi13397+2573777+1263777+12612506(Top 47%)3467(Top 30%)3467(Top 185%)
20M20.00 mi1.36 mi13339+583758+193758+1912966(Top 49%)3835(Top 34%)3835(Top 204%)
21M21.00 mi1.00 mi13149+1903666+923666+9210709(Top 40%)2735(Top 24%)2735(Top 146%)
35K21.75 mi0.75 mi13055+943629+373629+3711019(Top 41%)2896(Top 25%)2896(Top 154%)
23M23.00 mi1.25 mi12912+1433580+493580+4910918(Top 41%)2985(Top 26%)2985(Top 159%)
24M24.00 mi1.00 mi12801+1113533+473533+4710696(Top 40%)2940(Top 26%)2940(Top 157%)
40K24.85 mi0.85 mi12743+583520+133520+1311571(Top 43%)3449(Top 30%)3449(Top 184%)
25.2M25.20 mi0.35 mi12728+153515+53515+511649(Top 44%)3545(Top 31%)3545(Top 189%)
Finish26.22 mi1.02 mi12725+33539-243539-2412673(Top 48%)4049(Top 35%)4049(Top 216%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

14499

Females

4380

F40-44

4380

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13646

Females

3820

F40-44

3820

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

14499

Females

4380

F40-44

4380

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14374

Females

4327

F40-44

4327

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

12929

Females

3458

F40-44

3458

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13585

Females

3971

F40-44

3971

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

12506

Females

3467

F40-44

3467

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

12966

Females

3835

F40-44

3835

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10709

Females

2735

F40-44

2735

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11019

Females

2896

F40-44

2896

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10918

Females

2985

F40-44

2985

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

10696

Females

2940

F40-44

2940

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11571

Females

3449

F40-44

3449

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11649

Females

3545

F40-44

3545

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

12673

Females

4049

F40-44

4049

Passing Analysis

Category:
Athletes Passed
1770
Passed By
1975
Net Change
-205
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12520
5K → 10K122666-544#12520#13064
10K → 15K67552-485#13064#13549
15K → 20K135314-179#13549#13728
20K → Half566+50#13728#13678
Half → 25K146122+24#13678#13654
25K → 30K33174+257#13654#13397
30K → 20M11355+58#13397#13339
20M → 21M20212+190#13339#13149
21M → 35K11016+94#13149#13055
35K → 23M16825+143#13055#12912
23M → 24M13423+111#12912#12801
24M → 40K8628+58#12801#12743
40K → 25.2M3722+15#12743#12728
25.2M → Finish6360+3#12728#12725
TOTALS17701975-205
📊

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