Boston Marathon logo
BOSTON MARATHON 2023

Sarah Pensanti

Bib: 18002•F

CT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:39
Rank: #15876
Start → 5K
25:39 | 8:15/mi
10K· 6.21 mi
50:39
Rank: #15474 (+402)
5K → 10K
25:00 | 8:03/mi
15K· 9.32 mi
1:15:36
Rank: #15194 (+280)
10K → 15K
24:57 | 8:02/mi
20K· 12.43 mi
1:44:13
Rank: #16834 (-1640)
15K → 20K
28:37 | 9:13/mi
Half· 13.11 mi
1:49:47
Rank: #16793 (+41)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:10:24
Rank: #16701 (+92)
Half → 25K
20:37 | 8:30/mi
30K· 18.64 mi
2:37:51
Rank: #16582 (+119)
25K → 30K
27:27 | 8:50/mi
20M
2:49:55
Rank: #16508 (+74)
30K → 20M
12:04 | 8:53/mi
21M
2:59:18
Rank: #16417 (+91)
20M → 21M
9:23 | 9:23/mi
35K· 21.75 mi
3:06:00
Rank: #16458 (-41)
21M → 35K
6:42 | 8:57/mi
23M
3:17:44
Rank: #16576 (-118)
35K → 23M
11:44 | 9:22/mi
24M
3:27:11
Rank: #16702 (-126)
23M → 24M
9:27 | 9:27/mi
40K· 24.85 mi
3:35:53
Rank: #16913 (-211)
24M → 40K
8:42 | 10:11/mi
25.2M
3:39:28
Rank: #16959 (-46)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
3:49:04
Rank: #17122 (-163)
25.2M → Finish
9:36 | 9:25/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:47
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time1:59:17
Pace9:06 /mi
📊Positive Split: 8.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0625:398:1525:39
8:15
-
10K
6.21 mi11:42:0650:398:0925:00
8:03
-0:12
15K
9.32 mi12:07:031:15:368:0724:57
8:02
-0:01
20K
12.43 mi12:35:401:44:138:2328:37
9:13
+1:11
Half
13.11 mi12:41:141:49:478:225:34
8:10
-1:03
25K
15.53 mi13:01:512:10:248:2420:37
8:30
+0:20
30K
18.64 mi13:29:182:37:518:2827:27
8:50
+0:20
20M
20.00 mi13:41:222:49:558:3012:04
8:53
+0:03
21M
21.00 mi13:50:452:59:188:329:23
9:23
+0:30
35K
21.75 mi13:57:273:06:008:336:42
8:57
-0:26
23M
23.00 mi14:09:113:17:448:3611:44
9:22
+0:25
24M
24.00 mi14:18:383:27:118:389:27
9:27
+0:05
40K
24.85 mi14:27:203:35:538:418:42
10:11
+0:44
25.2M
25.20 mi14:30:553:39:288:433:35
10:23
+0:12
Finish
26.22 mi14:40:313:49:048:459:36
9:25
-0:58

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

8:02 /mi

Average Pace

8:45 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:47

44% of race

Time at Steady Pace

1:14:50

33% of race

Time at Slower Pace

52:27

23% of race

Average Pace: 8:44 /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 mi11:17:0625:398:1525:39
8:15
#15876
10K
6.21 mi11:42:0650:398:0925:00
8:03
#15474
15K
9.32 mi12:07:031:15:368:0724:57
8:02
#15194
20K
12.43 mi12:35:401:44:138:2328:37
9:13
#16834
Half
13.11 mi12:41:141:49:478:225:34
8:10
#16793
25K
15.53 mi13:01:512:10:248:2420:37
8:30
#16701
30K
18.64 mi13:29:182:37:518:2827:27
8:50
#16582
20M
20.00 mi13:41:222:49:558:3012:04
8:53
#16508
21M
21.00 mi13:50:452:59:188:329:23
9:23
#16417
35K
21.75 mi13:57:273:06:008:336:42
8:57
#16458
23M
23.00 mi14:09:113:17:448:3611:44
9:22
#16576
24M
24.00 mi14:18:383:27:118:389:27
9:27
#16702
40K
24.85 mi14:27:203:35:538:418:42
10:11
#16913
25.2M
25.20 mi14:30:553:39:288:433:35
10:23
#16959
Finish
26.22 mi14:40:313:49:048:459:36
9:25
#17122
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi158765201520114668(Top 55%)4492(Top 39%)4492(Top 92%)
10K6.21 mi3.10 mi15474+4024952+2494952+24915166(Top 57%)4774(Top 42%)4774(Top 98%)
15K9.32 mi3.11 mi15194+2804780+1724780+17214668(Top 55%)4492(Top 39%)4492(Top 92%)
20K12.43 mi3.11 mi16834-16405823-10435823-104320623(Top 77%)8016(Top 70%)8016(Top 164%)
Half13.11 mi0.68 mi16793+415795+285795+2815594(Top 59%)5066(Top 44%)5066(Top 104%)
25K15.53 mi2.42 mi16701+925768+275768+2716238(Top 61%)5585(Top 49%)5585(Top 114%)
30K18.64 mi3.11 mi16582+1195734+345734+3416294(Top 61%)5670(Top 50%)5670(Top 116%)
20M20.00 mi1.36 mi16508+745705+295705+2915929(Top 60%)5536(Top 48%)5536(Top 113%)
21M21.00 mi1.00 mi16417+915659+465659+4615436(Top 58%)5313(Top 47%)5313(Top 109%)
35K21.75 mi0.75 mi16458-415692-335692-3317738(Top 67%)6686(Top 59%)6686(Top 137%)
23M23.00 mi1.25 mi16576-1185776-845776-8417824(Top 67%)6763(Top 59%)6763(Top 138%)
24M24.00 mi1.00 mi16702-1265864-885864-8819048(Top 72%)7468(Top 65%)7468(Top 153%)
40K24.85 mi0.85 mi16913-2116012-1486012-14820429(Top 77%)8292(Top 73%)8292(Top 170%)
25.2M25.20 mi0.35 mi16959-466048-366048-3618761(Top 70%)7365(Top 64%)7365(Top 151%)
Finish26.22 mi1.02 mi17122-1636142-946142-9419847(Top 75%)7904(Top 69%)7904(Top 162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21stories
+97ft-345ft

Overall

14668

Females

4492

F18-39

4492

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15166

Females

4774

F18-39

4774

10K→15K

6.2 - 9.3 mi

Top 55%
×3stories
+67ft-78ft

Overall

14668

Females

4492

F18-39

4492

15K→20K

9.3 - 12.4 mi

Top 77%
×5stories
+106ft-86ft

Overall

20623

Females

8016

F18-39

8016

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15594

Females

5066

F18-39

5066

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16238

Females

5585

F18-39

5585

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

16294

Females

5670

F18-39

5670

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

15929

Females

5536

F18-39

5536

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15436

Females

5313

F18-39

5313

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

17738

Females

6686

F18-39

6686

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17824

Females

6763

F18-39

6763

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19048

Females

7468

F18-39

7468

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20429

Females

8292

F18-39

8292

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18761

Females

7365

F18-39

7365

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2stories
+22ft-21ft

Overall

19847

Females

7904

F18-39

7904

Passing Analysis

Category:
Athletes Passed
1779
Passed By
3025
Net Change
-1246
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15876
5K → 10K541139+402#15876#15474
10K → 15K35070+280#15474#15194
15K → 20K131653-1640#15194#16834
20K → Half476+41#16834#16793
Half → 25K16876+92#16793#16701
25K → 30K235116+119#16701#16582
30K → 20M12349+74#16582#16508
20M → 21M12837+91#16508#16417
21M → 35K3576-41#16417#16458
35K → 23M48166-118#16458#16576
23M → 24M38164-126#16576#16702
24M → 40K15226-211#16702#16913
40K → 25.2M1460-46#16913#16959
25.2M → Finish24187-163#16959#17122
TOTALS17793025-1246
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing