Boston Marathon logo
BOSTON MARATHON 2023

Karen Sirimoglu

Bib: 29219•F

NH

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:25
Rank: #19604
Start → 5K
27:25 | 8:49/mi
10K· 6.21 mi
54:18
Rank: #19353 (+251)
5K → 10K
26:53 | 8:39/mi
15K· 9.32 mi
1:21:45
Rank: #19451 (-98)
10K → 15K
27:27 | 8:50/mi
20K· 12.43 mi
1:49:08
Rank: #19234 (+217)
15K → 20K
27:23 | 8:49/mi
Half· 13.11 mi
1:55:06
Rank: #19225 (+9)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:16:50
Rank: #19134 (+91)
Half → 25K
21:44 | 8:58/mi
30K· 18.64 mi
2:45:32
Rank: #19003 (+131)
25K → 30K
28:42 | 9:14/mi
20M
2:57:57
Rank: #18858 (+145)
30K → 20M
12:25 | 9:08/mi
21M
3:07:38
Rank: #18719 (+139)
20M → 21M
9:41 | 9:41/mi
35K· 21.75 mi
3:14:14
Rank: #18649 (+70)
21M → 35K
6:36 | 8:49/mi
23M
3:27:45
Rank: #18990 (-341)
35K → 23M
13:31 | 10:48/mi
24M
3:39:00
Rank: #19342 (-352)
23M → 24M
11:15 | 11:15/mi
40K· 24.85 mi
3:48:18
Rank: #19518 (-176)
24M → 40K
9:18 | 10:53/mi
25.2M
3:52:04
Rank: #19542 (-24)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
4:02:00
Rank: #19613 (-71)
25.2M → Finish
9:56 | 9:45/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
Time1:55:06
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:06:54
Pace9:41 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0927:258:4927:25
8:49
-
10K
6.21 mi12:12:0254:188:4426:53
8:39
-0:10
15K
9.32 mi12:39:291:21:458:4627:27
8:50
+0:11
20K
12.43 mi13:06:521:49:088:4727:23
8:49
-0:01
Half
13.11 mi13:12:501:55:068:475:58
8:45
-0:04
25K
15.53 mi13:34:342:16:508:4921:44
8:58
+0:13
30K
18.64 mi14:03:162:45:328:5328:42
9:14
+0:16
20M
20.00 mi14:15:412:57:578:5412:25
9:08
-0:06
21M
21.00 mi14:25:223:07:388:569:41
9:41
+0:33
35K
21.75 mi14:31:583:14:148:566:36
8:49
-0:52
23M
23.00 mi14:45:293:27:459:0213:31
10:48
+1:59
24M
24.00 mi14:56:443:39:009:0811:15
11:15
+0:27
40K
24.85 mi15:06:023:48:189:119:18
10:53
-0:22
25.2M
25.20 mi15:09:483:52:049:133:46
10:55
+0:02
Finish
26.22 mi15:19:444:02:009:149:56
9:45
-1:10

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

8:39 /mi

Average Pace

9:14 /mi

Slowest Pace

11:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:53

11% of race

Time at Steady Pace

2:37:40

65% of race

Time at Slower Pace

57:27

24% of race

Average Pace: 9:14 /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 mi11:45:0927:258:4927:25
8:49
#19604
10K
6.21 mi12:12:0254:188:4426:53
8:39
#19353
15K
9.32 mi12:39:291:21:458:4627:27
8:50
#19451
20K
12.43 mi13:06:521:49:088:4727:23
8:49
#19234
Half
13.11 mi13:12:501:55:068:475:58
8:45
#19225
25K
15.53 mi13:34:342:16:508:4921:44
8:58
#19134
30K
18.64 mi14:03:162:45:328:5328:42
9:14
#19003
20M
20.00 mi14:15:412:57:578:5412:25
9:08
#18858
21M
21.00 mi14:25:223:07:388:569:41
9:41
#18719
35K
21.75 mi14:31:583:14:148:566:36
8:49
#18649
23M
23.00 mi14:45:293:27:459:0213:31
10:48
#18990
24M
24.00 mi14:56:443:39:009:0811:15
11:15
#19342
40K
24.85 mi15:06:023:48:189:119:18
10:53
#19518
25.2M
25.20 mi15:09:483:52:049:133:46
10:55
#19542
Finish
26.22 mi15:19:444:02:009:149:56
9:45
#19613
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi196047580758019712(Top 74%)7511(Top 66%)7511(Top 622%)
10K6.21 mi3.10 mi19353+2517372+2087372+20819160(Top 72%)7181(Top 63%)7181(Top 595%)
15K9.32 mi3.11 mi19451-987426-547426-5419712(Top 74%)7511(Top 66%)7511(Top 622%)
20K12.43 mi3.11 mi19234+2177259+1677259+16718777(Top 71%)6955(Top 61%)6955(Top 576%)
Half13.11 mi0.68 mi19225+97253+67253+619255(Top 72%)7246(Top 63%)7246(Top 600%)
25K15.53 mi2.42 mi19134+917198+557198+5518798(Top 71%)7016(Top 61%)7016(Top 581%)
30K18.64 mi3.11 mi19003+1317142+567142+5618356(Top 69%)6846(Top 60%)6846(Top 567%)
20M20.00 mi1.36 mi18858+1457074+687074+6817282(Top 65%)6333(Top 55%)6333(Top 525%)
21M21.00 mi1.00 mi18719+1397000+747000+7416813(Top 63%)6089(Top 53%)6089(Top 504%)
35K21.75 mi0.75 mi18649+706959+416959+4117119(Top 64%)6357(Top 56%)6357(Top 527%)
23M23.00 mi1.25 mi18990-3417176-2177176-21721958(Top 82%)9045(Top 79%)9045(Top 749%)
24M24.00 mi1.00 mi19342-3527378-2027378-20223506(Top 88%)9895(Top 87%)9895(Top 820%)
40K24.85 mi0.85 mi19518-1767500-1227500-12222105(Top 83%)9193(Top 80%)9193(Top 762%)
25.2M25.20 mi0.35 mi19542-247519-197519-1920296(Top 76%)8209(Top 72%)8209(Top 680%)
Finish26.22 mi1.02 mi19613-717568-497568-4920973(Top 79%)8542(Top 75%)8542(Top 708%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

19712

Females

7511

F50-54

7511

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

19160

Females

7181

F50-54

7181

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

19712

Females

7511

F50-54

7511

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18777

Females

6955

F50-54

6955

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19255

Females

7246

F50-54

7246

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

18798

Females

7016

F50-54

7016

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

18356

Females

6846

F50-54

6846

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17282

Females

6333

F50-54

6333

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16813

Females

6089

F50-54

6089

21M→35K

21.0 - 21.8 mi

Top 64%
×7stories
+17ft-86ft

Overall

17119

Females

6357

F50-54

6357

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21958

Females

9045

F50-54

9045

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23506

Females

9895

F50-54

9895

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22105

Females

9193

F50-54

9193

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20296

Females

8209

F50-54

8209

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

20973

Females

8542

F50-54

8542

Passing Analysis

Category:
Athletes Passed
1801
Passed By
1810
Net Change
-9
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19604
5K → 10K480229+251#19604#19353
10K → 15K139237-98#19353#19451
15K → 20K27962+217#19451#19234
20K → Half2314+9#19234#19225
Half → 25K16069+91#19225#19134
25K → 30K242111+131#19134#19003
30K → 20M16419+145#19003#18858
20M → 21M15617+139#18858#18719
21M → 35K8010+70#18719#18649
35K → 23M11352-341#18649#18990
23M → 24M17369-352#18990#19342
24M → 40K16192-176#19342#19518
40K → 25.2M1034-24#19518#19542
25.2M → Finish2495-71#19542#19613
TOTALS18011810-9
📊

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