Boston Marathon logo
BOSTON MARATHON 2023

Dena Shilling

Bib: 19561•F

OH

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 50%
Gender (Female)
#0 / 11423
Top 33%
Masters (Masters Women)
#0 / 6539
Top 20%
Division (F40-44)
#0 / 1878
Top 37%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:15
Rank: #14920
Start → 5K
25:15 | 8:08/mi
10K· 6.21 mi
50:13
Rank: #14982 (-62)
5K → 10K
24:58 | 8:02/mi
15K· 9.32 mi
1:15:05
Rank: #14790 (+192)
10K → 15K
24:52 | 8:00/mi
20K· 12.43 mi
1:40:10
Rank: #14556 (+234)
15K → 20K
25:05 | 8:04/mi
Half· 13.11 mi
1:45:38
Rank: #14570 (-14)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:05:15
Rank: #14359 (+211)
Half → 25K
19:37 | 8:05/mi
30K· 18.64 mi
2:31:04
Rank: #14138 (+221)
25K → 30K
25:49 | 8:19/mi
20M
2:42:21
Rank: #13976 (+162)
30K → 20M
11:17 | 8:18/mi
21M
2:51:13
Rank: #13873 (+103)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:57:03
Rank: #13726 (+147)
21M → 35K
5:50 | 7:48/mi
23M
3:07:18
Rank: #13544 (+182)
35K → 23M
10:15 | 8:11/mi
24M
3:15:19
Rank: #13407 (+137)
23M → 24M
8:01 | 8:01/mi
40K· 24.85 mi
3:22:25
Rank: #13336 (+71)
24M → 40K
7:06 | 8:18/mi
25.2M
3:25:28
Rank: #13282 (+54)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:33:34
Rank: #13212 (+70)
25.2M → Finish
8:06 | 7:57/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
Time1:45:38
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:47:56
Pace8:14 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:0725:158:0825:15
8:08
-
10K
6.21 mi11:42:0550:138:0524:58
8:02
-0:06
15K
9.32 mi12:06:571:15:058:0324:52
8:00
-0:02
20K
12.43 mi12:32:021:40:108:0425:05
8:04
+0:04
Half
13.11 mi12:37:301:45:388:035:28
8:01
-0:03
25K
15.53 mi12:57:072:05:158:0419:37
8:05
+0:04
30K
18.64 mi13:22:562:31:048:0625:49
8:19
+0:14
20M
20.00 mi13:34:132:42:218:0711:17
8:18
-0:01
21M
21.00 mi13:43:052:51:138:098:52
8:52
+0:34
35K
21.75 mi13:48:552:57:038:085:50
7:48
-1:04
23M
23.00 mi13:59:103:07:188:0910:15
8:11
+0:23
24M
24.00 mi14:07:113:15:198:088:01
8:01
-0:10
40K
24.85 mi14:14:173:22:258:097:06
8:18
+0:17
25.2M
25.20 mi14:17:203:25:288:093:03
8:51
+0:33
Finish
26.22 mi14:25:263:33:348:098:06
7:57
-0:54

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

8:09 /mi

Slowest Pace

8:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:39

94% of race

Time at Steady Pace

11:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:09 /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 mi11:17:0725:158:0825:15
8:08
#14920
10K
6.21 mi11:42:0550:138:0524:58
8:02
#14982
15K
9.32 mi12:06:571:15:058:0324:52
8:00
#14790
20K
12.43 mi12:32:021:40:108:0425:05
8:04
#14556
Half
13.11 mi12:37:301:45:388:035:28
8:01
#14570
25K
15.53 mi12:57:072:05:158:0419:37
8:05
#14359
30K
18.64 mi13:22:562:31:048:0625:49
8:19
#14138
20M
20.00 mi13:34:132:42:218:0711:17
8:18
#13976
21M
21.00 mi13:43:052:51:138:098:52
8:52
#13873
35K
21.75 mi13:48:552:57:038:085:50
7:48
#13726
23M
23.00 mi13:59:103:07:188:0910:15
8:11
#13544
24M
24.00 mi14:07:113:15:198:088:01
8:01
#13407
40K
24.85 mi14:14:173:22:258:097:06
8:18
#13336
25.2M
25.20 mi14:17:203:25:288:093:03
8:51
#13282
Finish
26.22 mi14:25:263:33:348:098:06
7:57
#13212
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi149204591459114425(Top 54%)4333(Top 38%)4333(Top 231%)
10K6.21 mi3.10 mi14982-624639-484639-4815076(Top 57%)4713(Top 41%)4713(Top 251%)
15K9.32 mi3.11 mi14790+1924532+1074532+10714425(Top 54%)4333(Top 38%)4333(Top 231%)
20K12.43 mi3.11 mi14556+2344404+1284404+12814055(Top 53%)4137(Top 36%)4137(Top 220%)
Half13.11 mi0.68 mi14570-144407-34407-314497(Top 54%)4366(Top 38%)4366(Top 232%)
25K15.53 mi2.42 mi14359+2114320+874320+8713455(Top 51%)3894(Top 34%)3894(Top 207%)
30K18.64 mi3.11 mi14138+2214225+954225+9513099(Top 49%)3811(Top 33%)3811(Top 203%)
20M20.00 mi1.36 mi13976+1624150+754150+7512411(Top 47%)3529(Top 31%)3529(Top 188%)
21M21.00 mi1.00 mi13873+1034097+534097+5312674(Top 48%)3770(Top 33%)3770(Top 201%)
35K21.75 mi0.75 mi13726+1474023+744023+7410713(Top 40%)2747(Top 24%)2747(Top 146%)
23M23.00 mi1.25 mi13544+1823941+823941+8211134(Top 42%)3088(Top 27%)3088(Top 164%)
24M24.00 mi1.00 mi13407+1373876+653876+6511398(Top 43%)3293(Top 29%)3293(Top 175%)
40K24.85 mi0.85 mi13336+713861+153861+1512109(Top 45%)3734(Top 33%)3734(Top 199%)
25.2M25.20 mi0.35 mi13282+543845+163845+1611663(Top 44%)3559(Top 31%)3559(Top 190%)
Finish26.22 mi1.02 mi13212+703824+213824+2111767(Top 44%)3587(Top 31%)3587(Top 191%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

14425

Females

4333

F40-44

4333

5K→10K

3.1 - 6.2 mi

Top 57%
×5stories
+79ft-138ft

Overall

15076

Females

4713

F40-44

4713

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

14425

Females

4333

F40-44

4333

15K→20K

9.3 - 12.4 mi

Top 53%
×5stories
+106ft-86ft

Overall

14055

Females

4137

F40-44

4137

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

14497

Females

4366

F40-44

4366

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

13455

Females

3894

F40-44

3894

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13099

Females

3811

F40-44

3811

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

12411

Females

3529

F40-44

3529

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12674

Females

3770

F40-44

3770

21M→35K

21.0 - 21.8 mi

Top 40%
×7stories
+17ft-86ft

Overall

10713

Females

2747

F40-44

2747

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11134

Females

3088

F40-44

3088

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11398

Females

3293

F40-44

3293

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12109

Females

3734

F40-44

3734

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11663

Females

3559

F40-44

3559

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11767

Females

3587

F40-44

3587

Passing Analysis

Category:
Athletes Passed
2540
Passed By
832
Net Change
+1708
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14920
5K → 10K261323-62#14920#14982
10K → 15K293101+192#14982#14790
15K → 20K32187+234#14790#14556
20K → Half2640-14#14556#14570
Half → 25K25443+211#14570#14359
25K → 30K29372+221#14359#14138
30K → 20M18725+162#14138#13976
20M → 21M14037+103#13976#13873
21M → 35K1514+147#13873#13726
35K → 23M19715+182#13726#13544
23M → 24M15114+137#13544#13407
24M → 40K9726+71#13407#13336
40K → 25.2M628+54#13336#13282
25.2M → Finish10737+70#13282#13212
TOTALS2540832+1708
📊

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