Boston Marathon logo
BOSTON MARATHON 2023

Cynthia Mendez-Karr

Bib: 14226•F

TX

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 15%
Masters (Masters Women)
#0 / 6539
Top 6%
Division (F50-54)
#0 / 1207
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:33/mi
23:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:21/mi
46:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:09:13
↑ 67↓ 78
20K· 12.43 mi
7:26/mi
1:32:20
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:37:22
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:55:26
↑ 66↓ 880.2%
30K· 18.64 mi
7:42/mi
2:19:22
↑ 181↓ 1480.2%
20M
8:11/mi
2:30:29
↑ 64↓ 500.2%
21M
8:50/mi
2:39:19
↑ 106↓ 241.6%
35K· 21.75 mi
7:48/mi
2:45:09
↑ 17↓ 861.7%
23M
8:06/mi
2:55:17
↑ 23↓ 630.6%
24M
7:43/mi
3:03:00
↓ 821.3%
40K· 24.85 mi
7:41/mi
3:09:34
↓ 200.3%
25.2M
8:19/mi
3:12:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:16/mi
3:19:50
↑ 22↓ 21

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
Time1:37:22
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:42:28
Pace7:49 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4623:277:3323:27
7:33
-
10K
6.21 mi11:15:3546:167:2722:49
7:21
-0:12
15K
9.32 mi11:38:321:09:137:2622:57
7:23
+0:02
20K
12.43 mi12:01:391:32:207:2623:07
7:26
+0:03
Half
13.11 mi12:06:411:37:227:265:02
7:23
-0:03
25K
15.53 mi12:24:451:55:267:2618:04
7:27
+0:04
30K
18.64 mi12:48:412:19:227:2923:56
7:42
+0:15
20M
20.00 mi12:59:482:30:297:3111:07
8:11
+0:29
21M
21.00 mi13:08:382:39:197:358:50
8:50
+0:39
35K
21.75 mi13:14:282:45:097:365:50
7:48
-1:02
23M
23.00 mi13:24:362:55:177:3710:08
8:06
+0:18
24M
24.00 mi13:32:193:03:007:387:43
7:43
-0:23
40K
24.85 mi13:38:533:09:347:386:34
7:41
-0:02
25.2M
25.20 mi13:41:453:12:267:382:52
8:19
+0:38
Finish
26.22 mi13:49:093:19:507:387:24
7:16
-1:03

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

7:16 /mi

Average Pace

7:38 /mi

Slowest Pace

8:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:23

50% of race

Time at Steady Pace

1:07:30

34% of race

Time at Slower Pace

32:57

16% of race

Average Pace: 7:37 /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 mi10:52:4623:277:3323:27
7:33
#10068
10K
6.21 mi11:15:3546:167:2722:49
7:21
#9554
15K
9.32 mi11:38:321:09:137:2622:57
7:23
#9409
20K
12.43 mi12:01:391:32:207:2623:07
7:26
#9240
Half
13.11 mi12:06:411:37:227:265:02
7:23
#9225
25K
15.53 mi12:24:451:55:267:2618:04
7:27
#9068
30K
18.64 mi12:48:412:19:227:2923:56
7:42
#8978
20M
20.00 mi12:59:482:30:297:3111:07
8:11
#9141
21M
21.00 mi13:08:382:39:197:358:50
8:50
#9320
35K
21.75 mi13:14:282:45:097:365:50
7:48
#9352
23M
23.00 mi13:24:362:55:177:3710:08
8:06
#9381
24M
24.00 mi13:32:193:03:007:387:43
7:43
#9341
40K
24.85 mi13:38:533:09:347:386:34
7:41
#9263
25.2M
25.20 mi13:41:453:12:267:382:52
8:19
#9243
Finish
26.22 mi13:49:093:19:507:387:24
7:16
#9149
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi10068189318939243(Top 35%)1538(Top 13%)1538(Top 127%)
10K6.21 mi3.10 mi9554+5141635+2581635+2589198(Top 35%)1497(Top 13%)1497(Top 124%)
15K9.32 mi3.11 mi9409+1451582+531582+539243(Top 35%)1538(Top 13%)1538(Top 127%)
20K12.43 mi3.11 mi9240+1691537+451537+458850(Top 33%)1428(Top 13%)1428(Top 118%)
Half13.11 mi0.68 mi9225+151531+61531+69312(Top 35%)1604(Top 14%)1604(Top 133%)
25K15.53 mi2.42 mi9068+1571469+621469+628444(Top 32%)1348(Top 12%)1348(Top 112%)
30K18.64 mi3.11 mi8978+901478-91478-98678(Top 33%)1587(Top 14%)1587(Top 131%)
20M20.00 mi1.36 mi9141-1631566-881566-8811560(Top 43%)3022(Top 26%)3022(Top 250%)
21M21.00 mi1.00 mi9320-1791662-961662-9612449(Top 47%)3648(Top 32%)3648(Top 302%)
35K21.75 mi0.75 mi9352-321694-321694-3210645(Top 40%)2679(Top 23%)2679(Top 222%)
23M23.00 mi1.25 mi9381-291724-301724-3010410(Top 39%)2704(Top 24%)2704(Top 224%)
24M24.00 mi1.00 mi9341+401730-61730-69211(Top 35%)2199(Top 19%)2199(Top 182%)
40K24.85 mi0.85 mi9263+781727+31727+37870(Top 30%)1700(Top 15%)1700(Top 141%)
25.2M25.20 mi0.35 mi9243+201733-61733-68440(Top 32%)1991(Top 17%)1991(Top 165%)
Finish26.22 mi1.02 mi9149+941712+211712+216879(Top 26%)1384(Top 12%)1384(Top 115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9243

Females

1538

F50-54

1538

5K→10K

3.1 - 6.2 mi

Top 35%
×5story building
+79ft-138ft

Overall

9198

Females

1497

F50-54

1497

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9243

Females

1538

F50-54

1538

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8850

Females

1428

F50-54

1428

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9312

Females

1604

F50-54

1604

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8444

Females

1348

F50-54

1348

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

8678

Females

1587

F50-54

1587

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11560

Females

3022

F50-54

3022

20M→21M

20.0 - 21.0 mi

Top 47%
×8story building
+106ft-24ft

Overall

12449

Females

3648

F50-54

3648

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10645

Females

2679

F50-54

2679

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10410

Females

2704

F50-54

2704

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9211

Females

2199

F50-54

2199

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7870

Females

1700

F50-54

1700

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8440

Females

1991

F50-54

1991

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2story building
+22ft-21ft

Overall

6879

Females

1384

F50-54

1384

Passing Analysis

Category:
Athletes Passed
2060*
Passed By
1141
Net Change
+919
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10068
5K → 10K622*108+514#10068#9554
10K → 15K23994+145#9554#9409
15K → 20K23162+169#9409#9240
20K → Half3419+15#9240#9225
Half → 25K19538+157#9225#9068
25K → 30K204114+90#9068#8978
30K → 20M48211-163#8978#9141
20M → 21M35214-179#9141#9320
21M → 35K3668-32#9320#9352
35K → 23M73102-29#9352#9381
23M → 24M8141+40#9381#9341
24M → 40K11133+78#9341#9263
40K → 25.2M4020+20#9263#9243
25.2M → Finish11117+94#9243#9149
TOTALS2060*1141+919

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing