Boston Marathon logo
BOSTON MARATHON 2023

Alyssia Stevenson

Bib: 19908•F

UT

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 40%
Masters (Masters Women)
#0 / 6539
Top 28%
Division (F40-44)
#0 / 1878
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:49
Rank: #13941
Start → 5K
24:49 | 7:59/mi
10K· 6.21 mi
49:31
Rank: #14162 (-221)
5K → 10K
24:42 | 7:57/mi
15K· 9.32 mi
1:15:01
Rank: #14736 (-574)
10K → 15K
25:30 | 8:12/mi
20K· 12.43 mi
1:41:02
Rank: #15098 (-362)
15K → 20K
26:01 | 8:22/mi
Half· 13.11 mi
1:46:37
Rank: #15125 (-27)
20K → Half
5:35 | 8:11/mi
25K· 15.53 mi
2:06:56
Rank: #15140 (-15)
Half → 25K
20:19 | 8:23/mi
30K· 18.64 mi
2:33:50
Rank: #15147 (-7)
25K → 30K
26:54 | 8:39/mi
20M
2:45:50
Rank: #15181 (-34)
30K → 20M
12:00 | 8:50/mi
21M
2:54:43
Rank: #15020 (+161)
20M → 21M
8:53 | 8:53/mi
35K· 21.75 mi
3:00:53
Rank: #14965 (+55)
21M → 35K
6:10 | 8:15/mi
23M
3:11:23
Rank: #14811 (+154)
35K → 23M
10:30 | 8:23/mi
24M
3:19:34
Rank: #14687 (+124)
23M → 24M
8:11 | 8:11/mi
40K· 24.85 mi
3:26:52
Rank: #14621 (+66)
24M → 40K
7:18 | 8:32/mi
25.2M
3:30:04
Rank: #14603 (+18)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:38:25
Rank: #14536 (+67)
25.2M → Finish
8:21 | 8:12/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
Time1:46:37
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:51:48
Pace8:32 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4124:497:5924:49
7:59
-
10K
6.21 mi11:41:2349:317:5824:42
7:57
-0:02
15K
9.32 mi12:06:531:15:018:0325:30
8:12
+0:15
20K
12.43 mi12:32:541:41:028:0826:01
8:22
+0:10
Half
13.11 mi12:38:291:46:378:085:35
8:11
-0:11
25K
15.53 mi12:58:482:06:568:1020:19
8:23
+0:12
30K
18.64 mi13:25:422:33:508:1526:54
8:39
+0:16
20M
20.00 mi13:37:422:45:508:1712:00
8:50
+0:11
21M
21.00 mi13:46:352:54:438:198:53
8:53
+0:03
35K
21.75 mi13:52:453:00:538:196:10
8:15
-0:38
23M
23.00 mi14:03:153:11:238:1910:30
8:23
+0:08
24M
24.00 mi14:11:263:19:348:198:11
8:11
-0:12
40K
24.85 mi14:18:443:26:528:197:18
8:32
+0:21
25.2M
25.20 mi14:21:563:30:048:203:12
9:17
+0:45
Finish
26.22 mi14:30:173:38:258:208:21
8:12
-1:05

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

7:57 /mi

Average Pace

8:20 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:20

89% of race

Time at Steady Pace

24:05

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:20 /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 mi11:16:4124:497:5924:49
7:59
#13941
10K
6.21 mi11:41:2349:317:5824:42
7:57
#14162
15K
9.32 mi12:06:531:15:018:0325:30
8:12
#14736
20K
12.43 mi12:32:541:41:028:0826:01
8:22
#15098
Half
13.11 mi12:38:291:46:378:085:35
8:11
#15125
25K
15.53 mi12:58:482:06:568:1020:19
8:23
#15140
30K
18.64 mi13:25:422:33:508:1526:54
8:39
#15147
20M
20.00 mi13:37:422:45:508:1712:00
8:50
#15181
21M
21.00 mi13:46:352:54:438:198:53
8:53
#15020
35K
21.75 mi13:52:453:00:538:196:10
8:15
#14965
23M
23.00 mi14:03:153:11:238:1910:30
8:23
#14811
24M
24.00 mi14:11:263:19:348:198:11
8:11
#14687
40K
24.85 mi14:18:443:26:528:197:18
8:32
#14621
25.2M
25.20 mi14:21:563:30:048:203:12
9:17
#14603
Finish
26.22 mi14:30:173:38:258:208:21
8:12
#14536
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi139413995399515916(Top 60%)5242(Top 46%)5242(Top 279%)
10K6.21 mi3.10 mi14162-2214143-1484143-14814419(Top 54%)4314(Top 38%)4314(Top 230%)
15K9.32 mi3.11 mi14736-5744498-3554498-35515916(Top 60%)5242(Top 46%)5242(Top 279%)
20K12.43 mi3.11 mi15098-3624747-2494747-24916083(Top 60%)5395(Top 47%)5395(Top 287%)
Half13.11 mi0.68 mi15125-274764-174764-1715700(Top 59%)5106(Top 45%)5106(Top 272%)
25K15.53 mi2.42 mi15140-154794-304794-3015454(Top 58%)5109(Top 45%)5109(Top 272%)
30K18.64 mi3.11 mi15147-74853-594853-5915271(Top 57%)5096(Top 45%)5096(Top 271%)
20M20.00 mi1.36 mi15181-344893-404893-4015612(Top 59%)5334(Top 47%)5334(Top 284%)
21M21.00 mi1.00 mi15020+1614809+844809+8412791(Top 48%)3842(Top 34%)3842(Top 205%)
35K21.75 mi0.75 mi14965+554793+164793+1613790(Top 52%)4453(Top 39%)4453(Top 237%)
23M23.00 mi1.25 mi14811+1544726+674726+6712527(Top 47%)3817(Top 33%)3817(Top 203%)
24M24.00 mi1.00 mi14687+1244670+564670+5612527(Top 47%)3882(Top 34%)3882(Top 207%)
40K24.85 mi0.85 mi14621+664653+174653+1713611(Top 51%)4532(Top 40%)4532(Top 241%)
25.2M25.20 mi0.35 mi14603+184651+24651+214138(Top 53%)4822(Top 42%)4822(Top 257%)
Finish26.22 mi1.02 mi14536+674620+314620+3113418(Top 50%)4422(Top 39%)4422(Top 235%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

15916

Females

5242

F40-44

5242

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

14419

Females

4314

F40-44

4314

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

15916

Females

5242

F40-44

5242

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

16083

Females

5395

F40-44

5395

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

15700

Females

5106

F40-44

5106

Half→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

15454

Females

5109

F40-44

5109

25K→30K

15.5 - 18.6 mi

Top 57%
×9stories
+181ft-148ft

Overall

15271

Females

5096

F40-44

5096

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

15612

Females

5334

F40-44

5334

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12791

Females

3842

F40-44

3842

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13790

Females

4453

F40-44

4453

35K→23M

21.8 - 23.0 mi

Top 47%
×5stories
+23ft-63ft

Overall

12527

Females

3817

F40-44

3817

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12527

Females

3882

F40-44

3882

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13611

Females

4532

F40-44

4532

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14138

Females

4822

F40-44

4822

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2stories
+22ft-21ft

Overall

13418

Females

4422

F40-44

4422

Passing Analysis

Category:
Athletes Passed
1539
Passed By
2134
Net Change
-595
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13941
5K → 10K186407-221#13941#14162
10K → 15K58632-574#14162#14736
15K → 20K90452-362#14736#15098
20K → Half3259-27#15098#15125
Half → 25K130145-15#15125#15140
25K → 30K182189-7#15140#15147
30K → 20M70104-34#15147#15181
20M → 21M17716+161#15181#15020
21M → 35K7722+55#15020#14965
35K → 23M17521+154#14965#14811
23M → 24M13511+124#14811#14687
24M → 40K9529+66#14687#14621
40K → 25.2M3517+18#14621#14603
25.2M → Finish9730+67#14603#14536
TOTALS15392134-595
📊

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