All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2026

Stefanie Acierno

Bib: 27835β€’F

MA

Boston Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
Race Day Weather
51Β°/41Β°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
28:52
3.11 mi
Rank: #23775
Start β†’ 5K
28:52 | 9:18/mi
10K
59:38
6.21 mi
Rank: #24811 (-1036)
5K β†’ 10K
30:46 | 9:55/mi
15K
1:31:55
9.32 mi
Rank: #25492 (-681)
10K β†’ 15K
32:17 | 10:24/mi
20K
2:08:59
12.43 mi
Rank: #26460 (-968)
15K β†’ 20K
37:04 | 11:56/mi
HALF
2:16:41
13.11 mi
Rank: #26539 (-79)
20K β†’ HALF
7:42 | 11:18/mi
25K
2:48:06
15.53 mi
Rank: #27043 (-504)
HALF β†’ 25K
31:25 | 12:58/mi
30K
3:28:24
18.64 mi
Rank: #27244 (-201)
25K β†’ 30K
40:18 | 12:59/mi
20M
3:46:13
20.00 mi
Rank: #27284 (-40)
30K β†’ 20M
17:49 | 13:08/mi
21M
4:00:35
21.00 mi
Rank: #27343 (-59)
20M β†’ 21M
14:22 | 14:22/mi
35K
4:09:37
21.75 mi
Rank: #27326 (+17)
21M β†’ 35K
9:02 | 12:05/mi
23M
4:26:15
23.00 mi
Rank: #27377 (-51)
35K β†’ 23M
16:38 | 13:18/mi
24M
4:38:51
24.00 mi
Rank: #27373 (+4)
23M β†’ 24M
12:36 | 12:36/mi
40K
4:49:20
24.85 mi
Rank: #27345 (+28)
24M β†’ 40K
10:29 | 12:16/mi
25.2M
4:54:16
25.20 mi
Rank: #27350 (-5)
40K β†’ 25.2M
4:56 | 14:19/mi
FINISH
5:05:38
26.22 mi
Rank: #27336 (+14)
25.2M β†’ FINISH
11:22 | 11:10/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:16:41
Pace10:26 /mi
2nd Half
Distance13.11 mi
Time2:48:57
Pace12:54 /mi
πŸ“ŠPositive Split: 23.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:3228:529:1828:52
9:18
-
10K
6.21 mi12:22:1859:389:3630:46
9:55
+0:37
15K
9.32 mi12:54:351:31:559:5232:17
10:24
+0:29
20K
12.43 mi13:31:392:08:5910:2337:04
11:56
+1:32
HALF
13.11 mi13:39:212:16:4110:267:42
11:18
-0:38
25K
15.53 mi14:10:462:48:0610:5031:25
12:58
+1:40
30K
18.64 mi14:51:043:28:2411:1140:18
12:59
+0:01
20M
20.00 mi15:08:533:46:1311:1917:49
13:08
+0:09
21M
21.00 mi15:23:154:00:3511:2814:22
14:22
+1:14
35K
21.75 mi15:32:174:09:3711:299:02
12:05
-2:17
23M
23.00 mi15:48:554:26:1511:3516:38
13:18
+1:13
24M
24.00 mi16:01:314:38:5111:3812:36
12:36
-0:42
40K
24.85 mi16:12:004:49:2011:3910:29
12:16
-0:20
25.2M
25.20 mi16:16:564:54:1611:414:56
14:19
+2:03
FINISH
26.22 mi16:28:185:05:3811:4011:22
11:10
-3:09

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:18 /mi

Average Pace

11:40 /mi

Slowest Pace

14:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:50:59

36% of race

Time at Steady Pace

2:20:54

46% of race

Time at Slower Pace

53:45

18% of race

Average Pace: 11:39 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:51:3228:529:1828:52
9:18
#23775
10K
6.21 mi12:22:1859:389:3630:46
9:55
#24811
15K
9.32 mi12:54:351:31:559:5232:17
10:24
#25492
20K
12.43 mi13:31:392:08:5910:2337:04
11:56
#26460
HALF
13.11 mi13:39:212:16:4110:267:42
11:18
#26539
25K
15.53 mi14:10:462:48:0610:5031:25
12:58
#27043
30K
18.64 mi14:51:043:28:2411:1140:18
12:59
#27244
20M
20.00 mi15:08:533:46:1311:1917:49
13:08
#27284
21M
21.00 mi15:23:154:00:3511:2814:22
14:22
#27343
35K
21.75 mi15:32:174:09:3711:299:02
12:05
#27326
23M
23.00 mi15:48:554:26:1511:3516:38
13:18
#27377
24M
24.00 mi16:01:314:38:5111:3812:36
12:36
#27373
40K
24.85 mi16:12:004:49:2011:3910:29
12:16
#27345
25.2M
25.20 mi16:16:564:54:1611:414:56
14:19
#27350
FINISH
26.22 mi16:28:185:05:3811:4011:22
11:10
#27336
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi237759559955926497(Top 91%)11021(Top 88%)11021(Top 894%)
10K6.21 mi3.10 mi24811-103610082-52310082-52325612(Top 88%)10507(Top 84%)10507(Top 852%)
15K9.32 mi3.11 mi25492-68110447-36510447-36526497(Top 91%)11021(Top 88%)11021(Top 894%)
20K12.43 mi3.11 mi26460-96810993-54610993-54627962(Top 96%)11895(Top 95%)11895(Top 965%)
HALF13.11 mi0.68 mi26539-7911037-4411037-4427685(Top 95%)11755(Top 93%)11755(Top 953%)
25K15.53 mi2.42 mi27043-50411336-29911336-29928210(Top 97%)12083(Top 96%)12083(Top 980%)
30K18.64 mi3.11 mi27244-20111471-13511471-13527693(Top 95%)11828(Top 94%)11828(Top 959%)
20M20.00 mi1.36 mi27284-4011508-3711508-3727516(Top 95%)11770(Top 94%)11770(Top 955%)
21M21.00 mi1.00 mi27343-5911558-5011558-5027630(Top 95%)11872(Top 94%)11872(Top 963%)
35K21.75 mi0.75 mi27326+1711552+611552+626811(Top 92%)11469(Top 91%)11469(Top 930%)
23M23.00 mi1.25 mi27377-5111591-3911591-3927631(Top 95%)11879(Top 94%)11879(Top 963%)
24M24.00 mi1.00 mi27373+411592-111592-127285(Top 94%)11757(Top 93%)11757(Top 954%)
40K24.85 mi0.85 mi27345+2811584+811584+826248(Top 90%)11274(Top 90%)11274(Top 914%)
25.2M25.20 mi0.35 mi27350-511590-611590-627477(Top 95%)11871(Top 94%)11871(Top 963%)
FINISH26.22 mi1.02 mi27336+1411587+311587+326368(Top 91%)11332(Top 90%)11332(Top 919%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
Γ—21
+97ft-345ft

Overall

26497

Females

11021

F50-54

11021

5K→10K

3.1 - 6.2 mi

Top 88%
Γ—5
+79ft-138ft

Overall

25612

Females

10507

F50-54

10507

10K→15K

6.2 - 9.3 mi

Top 91%
Γ—3
+67ft-78ft

Overall

26497

Females

11021

F50-54

11021

15K→20K

9.3 - 12.4 mi

Top 96%
Γ—5
+106ft-86ft

Overall

27962

Females

11895

F50-54

11895

20K→HALF

12.4 - 13.1 mi

Top 95%
Γ—2
+19ft-37ft

Overall

27685

Females

11755

F50-54

11755

HALF→25K

13.1 - 15.5 mi

Top 97%
Γ—4
+66ft-88ft

Overall

28210

Females

12083

F50-54

12083

25K→30K

15.5 - 18.6 mi

Top 95%
Γ—9
+181ft-148ft

Overall

27693

Females

11828

F50-54

11828

30K→20M

18.6 - 20.0 mi

Top 95%
Γ—5
+64ft-50ft

Overall

27516

Females

11770

F50-54

11770

20M→21M

20.0 - 21.0 mi

Top 95%
Γ—8
+106ft-24ft

Overall

27630

Females

11872

F50-54

11872

21M→35K

21.0 - 21.8 mi

Top 92%
Γ—7
+17ft-86ft

Overall

26811

Females

11469

F50-54

11469

35K→23M

21.8 - 23.0 mi

Top 95%
Γ—5
+23ft-63ft

Overall

27631

Females

11879

F50-54

11879

23M→24M

23.0 - 24.0 mi

Top 94%
Γ—6
+12ft-82ft

Overall

27285

Females

11757

F50-54

11757

24M→40K

24.0 - 24.9 mi

Top 90%
Γ—1
+6ft-20ft

Overall

26248

Females

11274

F50-54

11274

40K→25.2M

24.9 - 25.2 mi

Top 95%
Γ—1
+13ft-16ft

Overall

27477

Females

11871

F50-54

11871

25.2M→FINISH

25.2 - 26.2 mi

Top 91%
Γ—2
+22ft-21ft

Overall

26368

Females

11332

F50-54

11332

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
286
Passed By
1369
Net Change
-3561
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start β†’ 5K----#23775
5K β†’ 10K24200-1036#23775#24811
10K β†’ 15K14200-681#24811#25492
15K β†’ 20K12200-968#25492#26460
20K β†’ HALF887-79#26460#26539
HALF β†’ 25K6200-504#26539#27043
25K β†’ 30K32200-201#27043#27244
30K β†’ 20M2969-40#27244#27284
20M β†’ 21M1675-59#27284#27343
21M β†’ 35K2912+17#27343#27326
35K β†’ 23M1566-51#27326#27377
23M β†’ 24M3127+4#27377#27373
24M β†’ 40K4113+28#27373#27345
40K β†’ 25.2M510-5#27345#27350
25.2M β†’ FINISH2410+14#27350#27336
TOTALS2861369-3561
πŸ“Š

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

πŸ“ˆPosition Graph

Loading...

🎨Heatmap Timeline

Loading...

πŸ”„Passing Circle

Loading...

🌊Position Flow

Loading...

πŸƒRace Lanes

Loading...

Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

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