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BOSTON MARATHON 2023

Gretchen Pifer

Bib: 16446•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 41%
Gender (Female)
#0 / 11423
Top 23%
Division (F18-39)
#0 / 4884
Top 39%
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
7:55/mi
24:35
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
49:06
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:13:25
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:37:52
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:43:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
2:02:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:04/mi
2:27:28
↑ 181↓ 1480.2%
20M
8:01/mi
2:38:21
↑ 64↓ 500.2%
21M
8:20/mi
2:46:41
↑ 106↓ 241.6%
35K· 21.75 mi
7:40/mi
2:52:25
↑ 17↓ 861.7%
23M
7:44/mi
3:02:06
↑ 23↓ 630.6%
24M
7:33/mi
3:09:39
↓ 821.3%
40K· 24.85 mi
7:33/mi
3:16:06
↓ 200.3%
25.2M
7:58/mi
3:18:51
↑ 13↓ 160.2%
Finish· 26.22 mi
7:12/mi
3:26:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:09
Pace7:52 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:43:02
Pace7:52 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5124:357:5524:35
7:55
-
10K
6.21 mi11:39:2249:067:5424:31
7:53
-0:02
15K
9.32 mi12:03:411:13:257:5324:19
7:50
-0:03
20K
12.43 mi12:28:081:37:527:5324:27
7:52
+0:02
Half
13.11 mi12:33:251:43:097:525:17
7:45
-0:07
25K
15.53 mi12:52:392:02:237:5319:14
7:56
+0:11
30K
18.64 mi13:17:442:27:287:5525:05
8:04
+0:08
20M
20.00 mi13:28:372:38:217:5510:53
8:01
-0:03
21M
21.00 mi13:36:572:46:417:568:20
8:20
+0:19
35K
21.75 mi13:42:412:52:257:565:44
7:40
-0:40
23M
23.00 mi13:52:223:02:067:559:41
7:44
+0:04
24M
24.00 mi13:59:553:09:397:547:33
7:33
-0:11
40K
24.85 mi14:06:223:16:067:536:27
7:33
0:00
25.2M
25.20 mi14:09:073:18:517:532:45
7:58
+0:25
Finish
26.22 mi14:16:273:26:117:527:20
7:12
-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

7:12 /mi

Average Pace

7:52 /mi

Slowest Pace

8:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:54

68% of race

Time at Steady Pace

1:06:17

32% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:52 /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 mi11:14:5124:357:5524:35
7:55
#13359
10K
6.21 mi11:39:2249:067:5424:31
7:53
#13613
15K
9.32 mi12:03:411:13:257:5324:19
7:50
#13385
20K
12.43 mi12:28:081:37:527:5324:27
7:52
#13083
Half
13.11 mi12:33:251:43:097:525:17
7:45
#13023
25K
15.53 mi12:52:392:02:237:5319:14
7:56
#12852
30K
18.64 mi13:17:442:27:287:5525:05
8:04
#12561
20M
20.00 mi13:28:372:38:217:5510:53
8:01
#12361
21M
21.00 mi13:36:572:46:417:568:20
8:20
#12155
35K
21.75 mi13:42:412:52:257:565:44
7:40
#12049
23M
23.00 mi13:52:223:02:067:559:41
7:44
#11794
24M
24.00 mi13:59:553:09:397:547:33
7:33
#11601
40K
24.85 mi14:06:223:16:067:536:27
7:33
#11394
25.2M
25.20 mi14:09:073:18:517:532:45
7:58
#11283
Finish
26.22 mi14:16:273:26:117:527:20
7:12
#11034
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi133593644364412945(Top 49%)3439(Top 30%)3439(Top 70%)
10K6.21 mi3.10 mi13613-2543811-1673811-16713906(Top 52%)3982(Top 35%)3982(Top 82%)
15K9.32 mi3.11 mi13385+2283683+1283683+12812945(Top 49%)3439(Top 30%)3439(Top 70%)
20K12.43 mi3.11 mi13083+3023532+1513532+15112336(Top 46%)3152(Top 28%)3152(Top 65%)
Half13.11 mi0.68 mi13023+603497+353497+3512261(Top 46%)3053(Top 27%)3053(Top 63%)
25K15.53 mi2.42 mi12852+1713429+683429+6812166(Top 46%)3168(Top 28%)3168(Top 65%)
30K18.64 mi3.11 mi12561+2913293+1363293+13611468(Top 43%)2882(Top 25%)2882(Top 59%)
20M20.00 mi1.36 mi12361+2003193+1003193+10010360(Top 39%)2406(Top 21%)2406(Top 49%)
21M21.00 mi1.00 mi12155+2063099+943099+949458(Top 36%)2132(Top 19%)2132(Top 44%)
35K21.75 mi0.75 mi12049+1063056+433056+439746(Top 37%)2250(Top 20%)2250(Top 46%)
23M23.00 mi1.25 mi11794+2552930+1262930+1267992(Top 30%)1589(Top 14%)1589(Top 33%)
24M24.00 mi1.00 mi11601+1932845+852845+858094(Top 30%)1727(Top 15%)1727(Top 35%)
40K24.85 mi0.85 mi11394+2072756+892756+897032(Top 26%)1393(Top 12%)1393(Top 29%)
25.2M25.20 mi0.35 mi11283+1112709+472709+476467(Top 24%)1251(Top 11%)1251(Top 26%)
Finish26.22 mi1.02 mi11034+2492612+972612+976452(Top 24%)1230(Top 11%)1230(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

12945

Females

3439

F18-39

3439

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13906

Females

3982

F18-39

3982

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

12945

Females

3439

F18-39

3439

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12336

Females

3152

F18-39

3152

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12261

Females

3053

F18-39

3053

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12166

Females

3168

F18-39

3168

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11468

Females

2882

F18-39

2882

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10360

Females

2406

F18-39

2406

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9458

Females

2132

F18-39

2132

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9746

Females

2250

F18-39

2250

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7992

Females

1589

F18-39

1589

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

8094

Females

1727

F18-39

1727

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7032

Females

1393

F18-39

1393

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6467

Females

1251

F18-39

1251

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6452

Females

1230

F18-39

1230

Passing Analysis

Category:
Athletes Passed
3096
Passed By
771
Net Change
+2325
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13359
5K → 10K194448-254#13359#13613
10K → 15K32698+228#13613#13385
15K → 20K35351+302#13385#13083
20K → Half7010+60#13083#13023
Half → 25K22958+171#13023#12852
25K → 30K34857+291#12852#12561
30K → 20M21818+200#12561#12361
20M → 21M22115+206#12361#12155
21M → 35K1082+106#12155#12049
35K → 23M2605+255#12049#11794
23M → 24M1963+193#11794#11601
24M → 40K2092+207#11601#11394
40K → 25.2M1121+111#11394#11283
25.2M → Finish2523+249#11283#11034
TOTALS3096771+2325
📊

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