Boston Marathon logo
BOSTON MARATHON 2023

Shelley Vanderhout

Bib: 25592•F

ON

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Division (F18-39)
#0 / 4884
Top 48%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:29
Rank: #13094
Start → 5K
24:29 | 7:53/mi
10K· 6.21 mi
48:42
Rank: #13060 (+34)
5K → 10K
24:13 | 7:48/mi
15K· 9.32 mi
1:13:35
Rank: #13538 (-478)
10K → 15K
24:53 | 8:01/mi
20K· 12.43 mi
1:38:29
Rank: #13510 (+28)
15K → 20K
24:54 | 8:01/mi
Half· 13.11 mi
1:43:50
Rank: #13480 (+30)
20K → Half
5:21 | 7:50/mi
25K· 15.53 mi
2:03:18
Rank: #13356 (+124)
Half → 25K
19:28 | 8:02/mi
30K· 18.64 mi
2:28:37
Rank: #13084 (+272)
25K → 30K
25:19 | 8:09/mi
20M
2:39:33
Rank: #12862 (+222)
30K → 20M
10:56 | 8:03/mi
21M
2:48:08
Rank: #12702 (+160)
20M → 21M
8:35 | 8:35/mi
35K· 21.75 mi
2:54:01
Rank: #12647 (+55)
21M → 35K
5:53 | 7:52/mi
23M
3:04:16
Rank: #12535 (+112)
35K → 23M
10:15 | 8:11/mi
24M
3:12:48
Rank: #12639 (-104)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:19:49
Rank: #12587 (+52)
24M → 40K
7:01 | 8:12/mi
25.2M
3:22:47
Rank: #12539 (+48)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:30:49
Rank: #12480 (+59)
25.2M → Finish
8:02 | 7:53/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
Time1:43:50
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:46:59
Pace8:10 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:0424:297:5324:29
7:53
-
10K
6.21 mi12:04:1748:427:5024:13
7:48
-0:05
15K
9.32 mi12:29:101:13:357:5424:53
8:01
+0:13
20K
12.43 mi12:54:041:38:297:5524:54
8:01
0:00
Half
13.11 mi12:59:251:43:507:555:21
7:50
-0:11
25K
15.53 mi13:18:532:03:187:5619:28
8:02
+0:12
30K
18.64 mi13:44:122:28:377:5825:19
8:09
+0:07
20M
20.00 mi13:55:082:39:337:5910:56
8:03
-0:06
21M
21.00 mi14:03:432:48:088:008:35
8:35
+0:32
35K
21.75 mi14:09:362:54:018:005:53
7:52
-0:43
23M
23.00 mi14:19:513:04:168:0110:15
8:11
+0:19
24M
24.00 mi14:28:233:12:488:028:32
8:32
+0:21
40K
24.85 mi14:35:243:19:498:027:01
8:12
-0:20
25.2M
25.20 mi14:38:223:22:478:032:58
8:36
+0:24
Finish
26.22 mi14:46:243:30:498:038:02
7:53
-0:43

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

8:03 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:16

95% of race

Time at Steady Pace

11:33

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:02 /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 mi11:40:0424:297:5324:29
7:53
#13094
10K
6.21 mi12:04:1748:427:5024:13
7:48
#13060
15K
9.32 mi12:29:101:13:357:5424:53
8:01
#13538
20K
12.43 mi12:54:041:38:297:5524:54
8:01
#13510
Half
13.11 mi12:59:251:43:507:555:21
7:50
#13480
25K
15.53 mi13:18:532:03:187:5619:28
8:02
#13356
30K
18.64 mi13:44:122:28:377:5825:19
8:09
#13084
20M
20.00 mi13:55:082:39:337:5910:56
8:03
#12862
21M
21.00 mi14:03:432:48:088:008:35
8:35
#12702
35K
21.75 mi14:09:362:54:018:005:53
7:52
#12647
23M
23.00 mi14:19:513:04:168:0110:15
8:11
#12535
24M
24.00 mi14:28:233:12:488:028:32
8:32
#12639
40K
24.85 mi14:35:243:19:498:027:01
8:12
#12587
25.2M
25.20 mi14:38:223:22:478:032:58
8:36
#12539
Finish
26.22 mi14:46:243:30:498:038:02
7:53
#12480
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi130943497349714461(Top 54%)4353(Top 38%)4353(Top 89%)
10K6.21 mi3.10 mi13060+343481+163481+1613079(Top 49%)3478(Top 30%)3478(Top 71%)
15K9.32 mi3.11 mi13538-4783775-2943775-29414461(Top 54%)4353(Top 38%)4353(Top 89%)
20K12.43 mi3.11 mi13510+283788-133788-1313556(Top 51%)3842(Top 34%)3842(Top 79%)
Half13.11 mi0.68 mi13480+303771+173771+1713150(Top 49%)3584(Top 31%)3584(Top 73%)
25K15.53 mi2.42 mi13356+1243719+523719+5212982(Top 49%)3615(Top 32%)3615(Top 74%)
30K18.64 mi3.11 mi13084+2723603+1163603+11611997(Top 45%)3184(Top 28%)3184(Top 65%)
20M20.00 mi1.36 mi12862+2223490+1133490+11310637(Top 40%)2563(Top 22%)2563(Top 52%)
21M21.00 mi1.00 mi12702+1603414+763414+7610999(Top 41%)2872(Top 25%)2872(Top 59%)
35K21.75 mi0.75 mi12647+553396+183396+1811187(Top 42%)2974(Top 26%)2974(Top 61%)
23M23.00 mi1.25 mi12535+1123348+483348+4811130(Top 42%)3084(Top 27%)3084(Top 63%)
24M24.00 mi1.00 mi12639-1043439-913439-9114682(Top 55%)5050(Top 44%)5050(Top 103%)
40K24.85 mi0.85 mi12587+523422+173422+1711428(Top 43%)3376(Top 30%)3376(Top 69%)
25.2M25.20 mi0.35 mi12539+483400+223400+2210252(Top 39%)2832(Top 25%)2832(Top 58%)
Finish26.22 mi1.02 mi12480+593396+43396+411316(Top 43%)3354(Top 29%)3354(Top 69%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14461

Females

4353

F18-39

4353

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13079

Females

3478

F18-39

3478

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14461

Females

4353

F18-39

4353

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

13556

Females

3842

F18-39

3842

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

13150

Females

3584

F18-39

3584

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

12982

Females

3615

F18-39

3615

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

11997

Females

3184

F18-39

3184

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10637

Females

2563

F18-39

2563

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10999

Females

2872

F18-39

2872

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11187

Females

2974

F18-39

2974

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11130

Females

3084

F18-39

3084

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14682

Females

5050

F18-39

5050

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11428

Females

3376

F18-39

3376

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10252

Females

2832

F18-39

2832

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11316

Females

3354

F18-39

3354

Passing Analysis

Category:
Athletes Passed
2097
Passed By
1483
Net Change
+614
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13094
5K → 10K329295+34#13094#13060
10K → 15K71549-478#13060#13538
15K → 20K201173+28#13538#13510
20K → Half4818+30#13510#13480
Half → 25K19672+124#13480#13356
25K → 30K33260+272#13356#13084
30K → 20M23614+222#13084#12862
20M → 21M18525+160#12862#12702
21M → 35K7015+55#12702#12647
35K → 23M14836+112#12647#12535
23M → 24M44148-104#12535#12639
24M → 40K8331+52#12639#12587
40K → 25.2M546+48#12587#12539
25.2M → Finish10041+59#12539#12480
TOTALS20971483+614
📊

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