Boston Marathon logo
BOSTON MARATHON 2023

Katelynn Stilling

Bib: 13386•F

VA

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
26:40
Rank: #18137
Start → 5K
26:40 | 8:35/mi
10K· 6.21 mi
54:23
Rank: #19421 (-1284)
5K → 10K
27:43 | 8:55/mi
15K· 9.32 mi
1:22:25
Rank: #19826 (-405)
10K → 15K
28:02 | 9:01/mi
20K· 12.43 mi
1:51:04
Rank: #20050 (-224)
15K → 20K
28:39 | 9:13/mi
Half· 13.11 mi
1:56:56
Rank: #19967 (+83)
20K → Half
5:52 | 8:36/mi
25K· 15.53 mi
2:18:38
Rank: #19747 (+220)
Half → 25K
21:42 | 8:57/mi
30K· 18.64 mi
2:47:12
Rank: #19443 (+304)
25K → 30K
28:34 | 9:12/mi
20M
2:59:45
Rank: #19306 (+137)
30K → 20M
12:33 | 9:14/mi
21M
3:08:59
Rank: #19058 (+248)
20M → 21M
9:14 | 9:14/mi
35K· 21.75 mi
3:15:33
Rank: #18972 (+86)
21M → 35K
6:34 | 8:47/mi
23M
3:26:52
Rank: #18793 (+179)
35K → 23M
11:19 | 9:02/mi
24M
3:35:34
Rank: #18667 (+126)
23M → 24M
8:42 | 8:42/mi
40K· 24.85 mi
3:43:12
Rank: #18552 (+115)
24M → 40K
7:38 | 8:56/mi
25.2M
3:46:26
Rank: #18486 (+66)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:54:54
Rank: #18355 (+131)
25.2M → Finish
8:28 | 8:19/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 Half⚖️ Balanced
Distance13.11 mi
Time1:56:56
Pace8:55 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:57:58
Pace9:00 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0526:408:3526:40
8:35
-
10K
6.21 mi11:22:4854:238:4527:43
8:55
+0:20
15K
9.32 mi11:50:501:22:258:5128:02
9:01
+0:06
20K
12.43 mi12:19:291:51:048:5628:39
9:13
+0:12
Half
13.11 mi12:25:211:56:568:555:52
8:36
-0:37
25K
15.53 mi12:47:032:18:388:5521:42
8:57
+0:21
30K
18.64 mi13:15:372:47:128:5828:34
9:12
+0:15
20M
20.00 mi13:28:102:59:458:5912:33
9:14
+0:02
21M
21.00 mi13:37:243:08:599:009:14
9:14
0:00
35K
21.75 mi13:43:583:15:338:596:34
8:47
-0:27
23M
23.00 mi13:55:173:26:529:0011:19
9:02
+0:15
24M
24.00 mi14:03:593:35:348:598:42
8:42
-0:20
40K
24.85 mi14:11:373:43:128:597:38
8:56
+0:14
25.2M
25.20 mi14:14:513:46:268:593:14
9:23
+0:27
Finish
26.22 mi14:23:193:54:548:588:28
8:19
-1:04

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

8:19 /mi

Average Pace

8:58 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:40

65% of race

Time at Steady Pace

1:22:14

35% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:58 /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 mi10:55:0526:408:3526:40
8:35
#18137
10K
6.21 mi11:22:4854:238:4527:43
8:55
#19421
15K
9.32 mi11:50:501:22:258:5128:02
9:01
#19826
20K
12.43 mi12:19:291:51:048:5628:39
9:13
#20050
Half
13.11 mi12:25:211:56:568:555:52
8:36
#19967
25K
15.53 mi12:47:032:18:388:5521:42
8:57
#19747
30K
18.64 mi13:15:372:47:128:5828:34
9:12
#19443
20M
20.00 mi13:28:102:59:458:5912:33
9:14
#19306
21M
21.00 mi13:37:243:08:599:009:14
9:14
#19058
35K
21.75 mi13:43:583:15:338:596:34
8:47
#18972
23M
23.00 mi13:55:173:26:529:0011:19
9:02
#18793
24M
24.00 mi14:03:593:35:348:598:42
8:42
#18667
40K
24.85 mi14:11:373:43:128:597:38
8:56
#18552
25.2M
25.20 mi14:14:513:46:268:593:14
9:23
#18486
Finish
26.22 mi14:23:193:54:548:588:28
8:19
#18355
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi181376644664420608(Top 77%)8014(Top 70%)8014(Top 164%)
10K6.21 mi3.10 mi19421-12847411-7677411-76720526(Top 77%)7992(Top 70%)7992(Top 164%)
15K9.32 mi3.11 mi19826-4057634-2237634-22320608(Top 77%)8014(Top 70%)8014(Top 164%)
20K12.43 mi3.11 mi20050-2247747-1137747-11320658(Top 78%)8032(Top 70%)8032(Top 164%)
Half13.11 mi0.68 mi19967+837704+437704+4318368(Top 69%)6703(Top 59%)6703(Top 137%)
25K15.53 mi2.42 mi19747+2207573+1317573+13118720(Top 70%)6974(Top 61%)6974(Top 143%)
30K18.64 mi3.11 mi19443+3047394+1797394+17918153(Top 68%)6738(Top 59%)6738(Top 138%)
20M20.00 mi1.36 mi19306+1377335+597335+5917758(Top 67%)6622(Top 58%)6622(Top 136%)
21M21.00 mi1.00 mi19058+2487204+1317204+13114608(Top 55%)4838(Top 42%)4838(Top 99%)
35K21.75 mi0.75 mi18972+867162+427162+4216870(Top 63%)6214(Top 54%)6214(Top 127%)
23M23.00 mi1.25 mi18793+1797069+937069+9316277(Top 61%)5904(Top 52%)5904(Top 121%)
24M24.00 mi1.00 mi18667+1267003+667003+6615702(Top 59%)5651(Top 49%)5651(Top 116%)
40K24.85 mi0.85 mi18552+1156947+566947+5615808(Top 59%)5752(Top 50%)5752(Top 118%)
25.2M25.20 mi0.35 mi18486+666917+306917+3014685(Top 55%)5151(Top 45%)5151(Top 105%)
Finish26.22 mi1.02 mi18355+1316851+666851+6614201(Top 53%)4862(Top 43%)4862(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21stories
+97ft-345ft

Overall

20608

Females

8014

F18-39

8014

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

20526

Females

7992

F18-39

7992

10K→15K

6.2 - 9.3 mi

Top 77%
×3stories
+67ft-78ft

Overall

20608

Females

8014

F18-39

8014

15K→20K

9.3 - 12.4 mi

Top 78%
×5stories
+106ft-86ft

Overall

20658

Females

8032

F18-39

8032

20K→Half

12.4 - 13.1 mi

Top 69%
×2stories
+19ft-37ft

Overall

18368

Females

6703

F18-39

6703

Half→25K

13.1 - 15.5 mi

Top 70%
×4stories
+66ft-88ft

Overall

18720

Females

6974

F18-39

6974

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

18153

Females

6738

F18-39

6738

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

17758

Females

6622

F18-39

6622

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

14608

Females

4838

F18-39

4838

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

16870

Females

6214

F18-39

6214

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16277

Females

5904

F18-39

5904

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

15702

Females

5651

F18-39

5651

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

15808

Females

5752

F18-39

5752

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14685

Females

5151

F18-39

5151

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14201

Females

4862

F18-39

4862

Passing Analysis

Category:
Athletes Passed
2060
Passed By
2278
Net Change
-218
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18137
5K → 10K461330-1284#18137#19421
10K → 15K65470-405#19421#19826
15K → 20K113337-224#19826#20050
20K → Half863+83#20050#19967
Half → 25K25131+220#19967#19747
25K → 30K34440+304#19747#19443
30K → 20M16326+137#19443#19306
20M → 21M2480+248#19306#19058
21M → 35K915+86#19058#18972
35K → 23M1889+179#18972#18793
23M → 24M1348+126#18793#18667
24M → 40K1238+115#18667#18552
40K → 25.2M682+66#18552#18486
25.2M → Finish1409+131#18486#18355
TOTALS20602278-218
📊

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