Boston Marathon logo
BOSTON MARATHON 2023

Ruth Shefner

Bib: 3796•F

PA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 16%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:57
Rank: #4083
Start → 5K
20:57 | 6:45/mi
10K· 6.21 mi
41:51
Rank: #4338 (-255)
5K → 10K
20:54 | 6:44/mi
15K· 9.32 mi
1:02:50
Rank: #4432 (-94)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:25:01
Rank: #5246 (-814)
15K → 20K
22:11 | 7:08/mi
Half· 13.11 mi
1:29:33
Rank: #5172 (+74)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:46:11
Rank: #5054 (+118)
Half → 25K
16:38 | 6:52/mi
30K· 18.64 mi
2:07:51
Rank: #4829 (+225)
25K → 30K
21:40 | 6:58/mi
20M
2:17:17
Rank: #4708 (+121)
30K → 20M
9:26 | 6:57/mi
21M
2:24:51
Rank: #4715 (-7)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:29:48
Rank: #4637 (+78)
21M → 35K
4:57 | 6:37/mi
23M
2:38:23
Rank: #4504 (+133)
35K → 23M
8:35 | 6:51/mi
24M
2:45:00
Rank: #4377 (+127)
23M → 24M
6:37 | 6:37/mi
40K· 24.85 mi
2:50:51
Rank: #4311 (+66)
24M → 40K
5:51 | 6:51/mi
25.2M
2:53:21
Rank: #4271 (+40)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
3:00:10
Rank: #4231 (+40)
25.2M → Finish
6:49 | 6:41/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
Time1:29:33
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:30:37
Pace6:55 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3220:576:4520:57
6:45
-
10K
6.21 mi10:43:2641:516:4420:54
6:44
-0:01
15K
9.32 mi11:04:251:02:506:4420:59
6:45
+0:01
20K
12.43 mi11:26:361:25:016:5022:11
7:08
+0:23
Half
13.11 mi11:31:081:29:336:504:32
6:39
-0:29
25K
15.53 mi11:47:461:46:116:5016:38
6:52
+0:13
30K
18.64 mi12:09:262:07:516:5221:40
6:58
+0:06
20M
20.00 mi12:18:522:17:176:529:26
6:57
-0:01
21M
21.00 mi12:26:262:24:516:547:34
7:34
+0:37
35K
21.75 mi12:31:232:29:486:534:57
6:37
-0:57
23M
23.00 mi12:39:582:38:236:538:35
6:51
+0:14
24M
24.00 mi12:46:352:45:006:536:37
6:37
-0:14
40K
24.85 mi12:52:262:50:516:525:51
6:51
+0:14
25.2M
25.20 mi12:54:562:53:216:532:30
7:15
+0:24
Finish
26.22 mi13:01:453:00:106:536:49
6:41
-0:34

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

6:37 /mi

Average Pace

6:53 /mi

Slowest Pace

7:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:36

96% of race

Time at Steady Pace

7:34

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:52 /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 mi10:22:3220:576:4520:57
6:45
#4083
10K
6.21 mi10:43:2641:516:4420:54
6:44
#4338
15K
9.32 mi11:04:251:02:506:4420:59
6:45
#4432
20K
12.43 mi11:26:361:25:016:5022:11
7:08
#5246
Half
13.11 mi11:31:081:29:336:504:32
6:39
#5172
25K
15.53 mi11:47:461:46:116:5016:38
6:52
#5054
30K
18.64 mi12:09:262:07:516:5221:40
6:58
#4829
20M
20.00 mi12:18:522:17:176:529:26
6:57
#4708
21M
21.00 mi12:26:262:24:516:547:34
7:34
#4715
35K
21.75 mi12:31:232:29:486:534:57
6:37
#4637
23M
23.00 mi12:39:582:38:236:538:35
6:51
#4504
24M
24.00 mi12:46:352:45:006:536:37
6:37
#4377
40K
24.85 mi12:52:262:50:516:525:51
6:51
#4311
25.2M
25.20 mi12:54:562:53:216:532:30
7:15
#4271
Finish
26.22 mi13:01:453:00:106:536:49
6:41
#4231
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi40832502504674(Top 18%)305(Top 3%)305(Top 6%)
10K6.21 mi3.10 mi4338-255268-18268-184629(Top 17%)308(Top 3%)308(Top 6%)
15K9.32 mi3.11 mi4432-94281-13281-134674(Top 18%)305(Top 3%)305(Top 6%)
20K12.43 mi3.11 mi5246-814378-97378-976762(Top 25%)718(Top 6%)718(Top 15%)
Half13.11 mi0.68 mi5172+74369+9369+93922(Top 15%)234(Top 2%)234(Top 5%)
25K15.53 mi2.42 mi5054+118357+12357+124683(Top 18%)327(Top 3%)327(Top 7%)
30K18.64 mi3.11 mi4829+225332+25332+254200(Top 16%)283(Top 2%)283(Top 6%)
20M20.00 mi1.36 mi4708+121317+15317+153697(Top 14%)251(Top 2%)251(Top 5%)
21M21.00 mi1.00 mi4715-7318-1318-14934(Top 19%)495(Top 4%)495(Top 10%)
35K21.75 mi0.75 mi4637+78314+4314+43159(Top 12%)206(Top 2%)206(Top 4%)
23M23.00 mi1.25 mi4504+133302+12302+123007(Top 11%)203(Top 2%)203(Top 4%)
24M24.00 mi1.00 mi4377+127283+19283+192691(Top 10%)187(Top 2%)187(Top 4%)
40K24.85 mi0.85 mi4311+66281+2281+23059(Top 11%)246(Top 2%)246(Top 5%)
25.2M25.20 mi0.35 mi4271+40280+1280+12805(Top 11%)224(Top 2%)224(Top 5%)
Finish26.22 mi1.02 mi4231+40276+4276+43491(Top 13%)361(Top 3%)361(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4674

Females

305

F18-39

305

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4629

Females

308

F18-39

308

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4674

Females

305

F18-39

305

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6762

Females

718

F18-39

718

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

3922

Females

234

F18-39

234

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4683

Females

327

F18-39

327

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4200

Females

283

F18-39

283

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3697

Females

251

F18-39

251

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4934

Females

495

F18-39

495

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3159

Females

206

F18-39

206

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3007

Females

203

F18-39

203

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2691

Females

187

F18-39

187

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3059

Females

246

F18-39

246

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2805

Females

224

F18-39

224

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3491

Females

361

F18-39

361

Passing Analysis

Category:
Athletes Passed
1453
Passed By
1601
Net Change
-148
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4083
5K → 10K126381-255#4083#4338
10K → 15K93187-94#4338#4432
15K → 20K9823-814#4432#5246
20K → Half762+74#5246#5172
Half → 25K16042+118#5172#5054
25K → 30K26237+225#5054#4829
30K → 20M13514+121#4829#4708
20M → 21M5158-7#4708#4715
21M → 35K868+78#4715#4637
35K → 23M14411+133#4637#4504
23M → 24M1303+127#4504#4377
24M → 40K759+66#4377#4311
40K → 25.2M433+40#4311#4271
25.2M → Finish6323+40#4271#4231
TOTALS14531601-148
📊

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