Boston Marathon logo
BOSTON MARATHON 2023

Emily Merriman

Bib: 9136•F

TX

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 26%
Gender (Female)
#0 / 11423
Top 8%
Division (F18-39)
#0 / 4884
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:57
Rank: #6670
Start → 5K
21:57 | 7:04/mi
10K· 6.21 mi
43:30
Rank: #6509 (+161)
5K → 10K
21:33 | 6:56/mi
15K· 9.32 mi
1:05:09
Rank: #6454 (+55)
10K → 15K
21:39 | 6:58/mi
20K· 12.43 mi
1:27:11
Rank: #6438 (+16)
15K → 20K
22:02 | 7:06/mi
Half· 13.11 mi
1:32:02
Rank: #6466 (-28)
20K → Half
4:51 | 7:07/mi
25K· 15.53 mi
1:49:43
Rank: #6576 (-110)
Half → 25K
17:41 | 7:18/mi
30K· 18.64 mi
2:13:07
Rank: #6626 (-50)
25K → 30K
23:24 | 7:32/mi
20M
2:23:37
Rank: #6710 (-84)
30K → 20M
10:30 | 7:44/mi
21M
2:31:40
Rank: #6711 (-1)
20M → 21M
8:03 | 8:03/mi
35K· 21.75 mi
2:37:19
Rank: #6748 (-37)
21M → 35K
5:39 | 7:33/mi
23M
2:47:09
Rank: #6791 (-43)
35K → 23M
9:50 | 7:51/mi
24M
2:54:54
Rank: #6868 (-77)
23M → 24M
7:45 | 7:45/mi
40K· 24.85 mi
3:01:35
Rank: #6896 (-28)
24M → 40K
6:41 | 7:49/mi
25.2M
3:04:28
Rank: #6896
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:12:20
Rank: #6979 (-83)
25.2M → Finish
7:52 | 7:43/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
Time1:32:02
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:40:18
Pace7:39 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:4521:577:0421:57
7:04
-
10K
6.21 mi11:09:1843:307:0021:33
6:56
-0:08
15K
9.32 mi11:30:571:05:096:5921:39
6:58
+0:02
20K
12.43 mi11:52:591:27:117:0122:02
7:06
+0:08
Half
13.11 mi11:57:501:32:027:014:51
7:07
+0:01
25K
15.53 mi12:15:311:49:437:0417:41
7:18
+0:11
30K
18.64 mi12:38:552:13:077:0823:24
7:32
+0:14
20M
20.00 mi12:49:252:23:377:1110:30
7:44
+0:12
21M
21.00 mi12:57:282:31:407:138:03
8:03
+0:19
35K
21.75 mi13:03:072:37:197:145:39
7:33
-0:30
23M
23.00 mi13:12:572:47:097:169:50
7:51
+0:18
24M
24.00 mi13:20:422:54:547:177:45
7:45
-0:06
40K
24.85 mi13:27:233:01:357:186:41
7:49
+0:04
25.2M
25.20 mi13:30:163:04:287:192:53
8:22
+0:33
Finish
26.22 mi13:38:083:12:207:207:52
7:43
-0:39

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

6:56 /mi

Average Pace

7:20 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:43

57% of race

Time at Steady Pace

55:10

29% of race

Time at Slower Pace

27:27

14% of race

Average Pace: 7:20 /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 mi10:47:4521:577:0421:57
7:04
#6670
10K
6.21 mi11:09:1843:307:0021:33
6:56
#6509
15K
9.32 mi11:30:571:05:096:5921:39
6:58
#6454
20K
12.43 mi11:52:591:27:117:0122:02
7:06
#6438
Half
13.11 mi11:57:501:32:027:014:51
7:07
#6466
25K
15.53 mi12:15:311:49:437:0417:41
7:18
#6576
30K
18.64 mi12:38:552:13:077:0823:24
7:32
#6626
20M
20.00 mi12:49:252:23:377:1110:30
7:44
#6710
21M
21.00 mi12:57:282:31:407:138:03
8:03
#6711
35K
21.75 mi13:03:072:37:197:145:39
7:33
#6748
23M
23.00 mi13:12:572:47:097:169:50
7:51
#6791
24M
24.00 mi13:20:422:54:547:177:45
7:45
#6868
40K
24.85 mi13:27:233:01:357:186:41
7:49
#6896
25.2M
25.20 mi13:30:163:04:287:192:53
8:22
#6896
Finish
26.22 mi13:38:083:12:207:207:52
7:43
#6979
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi66706436436374(Top 24%)613(Top 5%)613(Top 13%)
10K6.21 mi3.10 mi6509+161625+18625+186410(Top 24%)618(Top 5%)618(Top 13%)
15K9.32 mi3.11 mi6454+55615+10615+106374(Top 24%)613(Top 5%)613(Top 13%)
20K12.43 mi3.11 mi6438+16616-1616-16526(Top 25%)664(Top 6%)664(Top 14%)
Half13.11 mi0.68 mi6466-28621-5621-57280(Top 27%)846(Top 7%)846(Top 17%)
25K15.53 mi2.42 mi6576-110655-34655-347266(Top 27%)929(Top 8%)929(Top 19%)
30K18.64 mi3.11 mi6626-50683-28683-287448(Top 28%)1086(Top 10%)1086(Top 22%)
20M20.00 mi1.36 mi6710-84720-37720-378378(Top 31%)1542(Top 13%)1542(Top 32%)
21M21.00 mi1.00 mi6711-1733-13733-137690(Top 29%)1375(Top 12%)1375(Top 28%)
35K21.75 mi0.75 mi6748-37745-12745-128935(Top 34%)1872(Top 16%)1872(Top 38%)
23M23.00 mi1.25 mi6791-43777-32777-328767(Top 33%)1914(Top 17%)1914(Top 39%)
24M24.00 mi1.00 mi6868-77819-42819-429433(Top 35%)2294(Top 20%)2294(Top 47%)
40K24.85 mi0.85 mi6896-28843-24843-248795(Top 33%)2072(Top 18%)2072(Top 42%)
25.2M25.20 mi0.35 mi6896860-17860-178694(Top 33%)2097(Top 18%)2097(Top 43%)
Finish26.22 mi1.02 mi6979-83905-45905-4510105(Top 38%)2736(Top 24%)2736(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6374

Females

613

F18-39

613

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6410

Females

618

F18-39

618

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6374

Females

613

F18-39

613

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

6526

Females

664

F18-39

664

20K→Half

12.4 - 13.1 mi

Top 27%
×2stories
+19ft-37ft

Overall

7280

Females

846

F18-39

846

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7266

Females

929

F18-39

929

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7448

Females

1086

F18-39

1086

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8378

Females

1542

F18-39

1542

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7690

Females

1375

F18-39

1375

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

8935

Females

1872

F18-39

1872

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8767

Females

1914

F18-39

1914

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9433

Females

2294

F18-39

2294

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8795

Females

2072

F18-39

2072

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8694

Females

2097

F18-39

2097

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10105

Females

2736

F18-39

2736

Passing Analysis

Category:
Athletes Passed
1013
Passed By
1322
Net Change
-309
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6670
5K → 10K283122+161#6670#6509
10K → 15K15297+55#6509#6454
15K → 20K10892+16#6454#6438
20K → Half1038-28#6438#6466
Half → 25K44154-110#6466#6576
25K → 30K96146-50#6576#6626
30K → 20M38122-84#6626#6710
20M → 21M6263-1#6710#6711
21M → 35K2764-37#6711#6748
35K → 23M5699-43#6748#6791
23M → 24M33110-77#6791#6868
24M → 40K3765-28#6868#6896
40K → 25.2M35350#6896#6896
25.2M → Finish32115-83#6896#6979
TOTALS10131322-309
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

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