Boston Marathon logo
BOSTON MARATHON 2023

Sara Flynn

Bib: 16583•F

NH

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 28%
Masters (Masters Women)
#0 / 6539
Top 15%
Division (F45-49)
#0 / 1817
Top 16%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:37
Rank: #13463
Start → 5K
24:37 | 7:55/mi
10K· 6.21 mi
49:03
Rank: #13540 (-77)
5K → 10K
24:26 | 7:52/mi
15K· 9.32 mi
1:13:37
Rank: #13566 (-26)
10K → 15K
24:34 | 7:54/mi
20K· 12.43 mi
1:38:26
Rank: #13475 (+91)
15K → 20K
24:49 | 7:59/mi
Half· 13.11 mi
1:43:54
Rank: #13526 (-51)
20K → Half
5:28 | 8:01/mi
25K· 15.53 mi
2:03:19
Rank: #13370 (+156)
Half → 25K
19:25 | 8:00/mi
30K· 18.64 mi
2:28:42
Rank: #13115 (+255)
25K → 30K
25:23 | 8:10/mi
20M
2:39:52
Rank: #13000 (+115)
30K → 20M
11:10 | 8:13/mi
21M
2:48:22
Rank: #12804 (+196)
20M → 21M
8:30 | 8:30/mi
35K· 21.75 mi
2:54:20
Rank: #12747 (+57)
21M → 35K
5:58 | 7:59/mi
23M
3:04:29
Rank: #12593 (+154)
35K → 23M
10:09 | 8:06/mi
24M
3:12:23
Rank: #12499 (+94)
23M → 24M
7:54 | 7:54/mi
40K· 24.85 mi
3:19:09
Rank: #12390 (+109)
24M → 40K
6:46 | 7:55/mi
25.2M
3:22:04
Rank: #12337 (+53)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:29:51
Rank: #12211 (+126)
25.2M → Finish
7:47 | 7:38/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
Time1:43:54
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:45:57
Pace8:05 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5724:377:5524:37
7:55
-
10K
6.21 mi11:39:2349:037:5424:26
7:52
-0:03
15K
9.32 mi12:03:571:13:377:5424:34
7:54
+0:02
20K
12.43 mi12:28:461:38:267:5524:49
7:59
+0:05
Half
13.11 mi12:34:141:43:547:565:28
8:01
+0:02
25K
15.53 mi12:53:392:03:197:5619:25
8:00
-0:01
30K
18.64 mi13:19:022:28:427:5925:23
8:10
+0:10
20M
20.00 mi13:30:122:39:528:0011:10
8:13
+0:03
21M
21.00 mi13:38:422:48:228:018:30
8:30
+0:17
35K
21.75 mi13:44:402:54:208:015:58
7:59
-0:31
23M
23.00 mi13:54:493:04:298:0110:09
8:06
+0:07
24M
24.00 mi14:02:433:12:238:017:54
7:54
-0:12
40K
24.85 mi14:09:293:19:098:016:46
7:55
+0:01
25.2M
25.20 mi14:12:243:22:048:012:55
8:27
+0:32
Finish
26.22 mi14:20:113:29:518:017:47
7:38
-0:49

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

7:38 /mi

Average Pace

8:01 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:26

95% of race

Time at Steady Pace

11:25

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:00 /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 mi11:14:5724:377:5524:37
7:55
#13463
10K
6.21 mi11:39:2349:037:5424:26
7:52
#13540
15K
9.32 mi12:03:571:13:377:5424:34
7:54
#13566
20K
12.43 mi12:28:461:38:267:5524:49
7:59
#13475
Half
13.11 mi12:34:141:43:547:565:28
8:01
#13526
25K
15.53 mi12:53:392:03:197:5619:25
8:00
#13370
30K
18.64 mi13:19:022:28:427:5925:23
8:10
#13115
20M
20.00 mi13:30:122:39:528:0011:10
8:13
#13000
21M
21.00 mi13:38:422:48:228:018:30
8:30
#12804
35K
21.75 mi13:44:402:54:208:015:58
7:59
#12747
23M
23.00 mi13:54:493:04:298:0110:09
8:06
#12593
24M
24.00 mi14:02:433:12:238:017:54
7:54
#12499
40K
24.85 mi14:09:293:19:098:016:46
7:55
#12390
25.2M
25.20 mi14:12:243:22:048:012:55
8:27
#12337
Finish
26.22 mi14:20:113:29:518:017:47
7:38
#12211
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi134633690369013623(Top 51%)3847(Top 34%)3847(Top 212%)
10K6.21 mi3.10 mi13540-773762-723762-7213688(Top 51%)3848(Top 34%)3848(Top 212%)
15K9.32 mi3.11 mi13566-263797-353797-3513623(Top 51%)3847(Top 34%)3847(Top 212%)
20K12.43 mi3.11 mi13475+913769+283769+2813315(Top 50%)3713(Top 33%)3713(Top 204%)
Half13.11 mi0.68 mi13526-513798-293798-2914475(Top 54%)4344(Top 38%)4344(Top 239%)
25K15.53 mi2.42 mi13370+1563726+723726+7212819(Top 48%)3529(Top 31%)3529(Top 194%)
30K18.64 mi3.11 mi13115+2553621+1053621+10512143(Top 46%)3268(Top 29%)3268(Top 180%)
20M20.00 mi1.36 mi13000+1153567+543567+5411826(Top 44%)3172(Top 28%)3172(Top 175%)
21M21.00 mi1.00 mi12804+1963478+893478+8910517(Top 40%)2638(Top 23%)2638(Top 145%)
35K21.75 mi0.75 mi12747+573456+223456+2211975(Top 45%)3411(Top 30%)3411(Top 188%)
23M23.00 mi1.25 mi12593+1543385+713385+7110544(Top 40%)2793(Top 24%)2793(Top 154%)
24M24.00 mi1.00 mi12499+943350+353350+3510566(Top 40%)2873(Top 25%)2873(Top 158%)
40K24.85 mi0.85 mi12390+1093309+413309+419502(Top 36%)2417(Top 21%)2417(Top 133%)
25.2M25.20 mi0.35 mi12337+533291+183291+189350(Top 35%)2409(Top 21%)2409(Top 133%)
Finish26.22 mi1.02 mi12211+1263239+523239+529581(Top 36%)2511(Top 22%)2511(Top 138%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13623

Females

3847

F45-49

3847

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13688

Females

3848

F45-49

3848

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13623

Females

3847

F45-49

3847

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

13315

Females

3713

F45-49

3713

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

14475

Females

4344

F45-49

4344

Half→25K

13.1 - 15.5 mi

Top 48%
×4stories
+66ft-88ft

Overall

12819

Females

3529

F45-49

3529

25K→30K

15.5 - 18.6 mi

Top 46%
×9stories
+181ft-148ft

Overall

12143

Females

3268

F45-49

3268

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11826

Females

3172

F45-49

3172

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10517

Females

2638

F45-49

2638

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

11975

Females

3411

F45-49

3411

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10544

Females

2793

F45-49

2793

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10566

Females

2873

F45-49

2873

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9502

Females

2417

F45-49

2417

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9350

Females

2409

F45-49

2409

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9581

Females

2511

F45-49

2511

Passing Analysis

Category:
Athletes Passed
2288
Passed By
1036
Net Change
+1252
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13463
5K → 10K263340-77#13463#13540
10K → 15K179205-26#13540#13566
15K → 20K230139+91#13566#13475
20K → Half1667-51#13475#13526
Half → 25K20852+156#13526#13370
25K → 30K32065+255#13370#13115
30K → 20M15641+115#13115#13000
20M → 21M20913+196#13000#12804
21M → 35K8124+57#12804#12747
35K → 23M16814+154#12747#12593
23M → 24M12026+94#12593#12499
24M → 40K12415+109#12499#12390
40K → 25.2M629+53#12390#12337
25.2M → Finish15226+126#12337#12211
TOTALS22881036+1252
📊

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