Boston Marathon logo
BOSTON MARATHON 2025

Theresa Halliday

Bib: 22891•F

NS

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:05
Rank: #19266
Start → 5K
26:05 | 8:24/mi
10K· 6.21 mi
55:58
Rank: #22454 (-3188)
5K → 10K
29:53 | 9:37/mi
15K· 9.32 mi
1:30:52
Rank: #24703 (-2249)
10K → 15K
34:54 | 11:14/mi
20K· 12.43 mi
2:08:58
Rank: #25749 (-1046)
15K → 20K
38:06 | 12:16/mi
Half· 13.11 mi
2:16:32
Rank: #25828 (-79)
20K → Half
7:34 | 11:05/mi
25K· 15.53 mi
2:45:04
Rank: #25916 (-88)
Half → 25K
28:32 | 11:46/mi
30K· 18.64 mi
3:23:42
Rank: #25944 (-28)
25K → 30K
38:38 | 12:26/mi
20M
3:39:56
Rank: #25903 (+41)
30K → 20M
16:14 | 11:57/mi
21M
3:52:57
Rank: #25865 (+38)
20M → 21M
13:01 | 13:01/mi
35K· 21.75 mi
4:01:33
Rank: #25856 (+9)
21M → 35K
8:36 | 11:30/mi
23M
4:16:00
Rank: #25791 (+65)
35K → 23M
14:27 | 11:32/mi
24M
4:27:06
Rank: #25743 (+48)
23M → 24M
11:06 | 11:06/mi
40K· 24.85 mi
4:36:59
Rank: #25706 (+37)
24M → 40K
9:53 | 11:34/mi
25.2M
4:41:37
Rank: #25713 (-7)
40K → 25.2M
4:38 | 13:26/mi
Finish· 26.22 mi
4:52:16
Rank: #25669 (+44)
25.2M → Finish
10:39 | 10:27/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
Time2:16:32
Pace10:25 /mi
2nd Half
Distance13.11 mi
Time2:35:44
Pace11:53 /mi
📊Positive Split: 14.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0626:058:2426:05
8:24
-
10K
6.21 mi11:53:5955:589:0029:53
9:37
+1:13
15K
9.32 mi12:28:531:30:529:4534:54
11:14
+1:37
20K
12.43 mi13:06:592:08:5810:2338:06
12:16
+1:02
Half
13.11 mi13:14:332:16:3210:257:34
11:05
-1:11
25K
15.53 mi13:43:052:45:0410:3828:32
11:46
+0:41
30K
18.64 mi14:21:433:23:4210:5638:38
12:26
+0:40
20M
20.00 mi14:37:573:39:5611:0016:14
11:57
-0:29
21M
21.00 mi14:50:583:52:5711:0613:01
13:01
+1:04
35K
21.75 mi14:59:344:01:3311:068:36
11:30
-1:31
23M
23.00 mi15:14:014:16:0011:0814:27
11:32
+0:02
24M
24.00 mi15:25:074:27:0611:0811:06
11:06
-0:26
40K
24.85 mi15:35:004:36:5911:099:53
11:34
+0:28
25.2M
25.20 mi15:39:384:41:3711:114:38
13:26
+1:52
Finish
26.22 mi15:50:174:52:1611:0910:39
10:27
-2:59

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

8:24 /mi

Average Pace

11:09 /mi

Slowest Pace

13:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:06:37

23% of race

Time at Steady Pace

2:11:16

45% of race

Time at Slower Pace

1:34:23

32% of race

Average Pace: 11:09 /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 mi11:24:0626:058:2426:05
8:24
#19266
10K
6.21 mi11:53:5955:589:0029:53
9:37
#22454
15K
9.32 mi12:28:531:30:529:4534:54
11:14
#24703
20K
12.43 mi13:06:592:08:5810:2338:06
12:16
#25749
Half
13.11 mi13:14:332:16:3210:257:34
11:05
#25828
25K
15.53 mi13:43:052:45:0410:3828:32
11:46
#25916
30K
18.64 mi14:21:433:23:4210:5638:38
12:26
#25944
20M
20.00 mi14:37:573:39:5611:0016:14
11:57
#25903
21M
21.00 mi14:50:583:52:5711:0613:01
13:01
#25865
35K
21.75 mi14:59:344:01:3311:068:36
11:30
#25856
23M
23.00 mi15:14:014:16:0011:0814:27
11:32
#25791
24M
24.00 mi15:25:074:27:0611:0811:06
11:06
#25743
40K
24.85 mi15:35:004:36:5911:099:53
11:34
#25706
25.2M
25.20 mi15:39:384:41:3711:114:38
13:26
#25713
Finish
26.22 mi15:50:174:52:1611:0910:39
10:27
#25669
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi192667064706426975(Top 95%)11364(Top 93%)11364(Top 872%)
10K6.21 mi3.10 mi22454-31888868-18048868-180424400(Top 86%)9916(Top 81%)9916(Top 761%)
15K9.32 mi3.11 mi24703-224910064-119610064-119626975(Top 95%)11364(Top 93%)11364(Top 872%)
20K12.43 mi3.11 mi25749-104610642-57810642-57827324(Top 96%)11595(Top 95%)11595(Top 890%)
Half13.11 mi0.68 mi25828-7910691-4910691-4926605(Top 94%)11176(Top 91%)11176(Top 858%)
25K15.53 mi2.42 mi25916-8810750-5910750-5926168(Top 92%)10953(Top 90%)10953(Top 841%)
30K18.64 mi3.11 mi25944-2810796-4610796-4626098(Top 92%)10994(Top 90%)10994(Top 844%)
20M20.00 mi1.36 mi25903+4110782+1410782+1425172(Top 89%)10574(Top 86%)10574(Top 812%)
21M21.00 mi1.00 mi25865+3810778+410778+425049(Top 88%)10593(Top 87%)10593(Top 813%)
35K21.75 mi0.75 mi25856+9107781077825065(Top 88%)10621(Top 87%)10621(Top 815%)
23M23.00 mi1.25 mi25791+6510756+2210756+2224325(Top 86%)10260(Top 84%)10260(Top 787%)
24M24.00 mi1.00 mi25743+4810747+910747+924174(Top 85%)10210(Top 83%)10210(Top 784%)
40K24.85 mi0.85 mi25706+3710739+810739+824223(Top 85%)10283(Top 84%)10283(Top 789%)
25.2M25.20 mi0.35 mi25713-710746-710746-725562(Top 90%)10980(Top 90%)10980(Top 843%)
Finish26.22 mi1.02 mi25669+4410732+1410732+1424155(Top 85%)10248(Top 84%)10248(Top 786%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

26975

Females

11364

F50-54

11364

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

24400

Females

9916

F50-54

9916

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

26975

Females

11364

F50-54

11364

15K→20K

9.3 - 12.4 mi

Top 96%
×5stories
+106ft-86ft

Overall

27324

Females

11595

F50-54

11595

20K→Half

12.4 - 13.1 mi

Top 94%
×2stories
+19ft-37ft

Overall

26605

Females

11176

F50-54

11176

Half→25K

13.1 - 15.5 mi

Top 92%
×4stories
+66ft-88ft

Overall

26168

Females

10953

F50-54

10953

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

26098

Females

10994

F50-54

10994

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

25172

Females

10574

F50-54

10574

20M→21M

20.0 - 21.0 mi

Top 88%
×8stories
+106ft-24ft

Overall

25049

Females

10593

F50-54

10593

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

25065

Females

10621

F50-54

10621

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

24325

Females

10260

F50-54

10260

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

24174

Females

10210

F50-54

10210

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24223

Females

10283

F50-54

10283

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25562

Females

10980

F50-54

10980

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2stories
+22ft-21ft

Overall

24155

Females

10248

F50-54

10248

Passing Analysis

Category:
Athletes Passed
587
Passed By
6990
Net Change
-6403
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19266
5K → 10K43192-3188#19266#22454
10K → 15K82257-2249#22454#24703
15K → 20K41050-1046#24703#25749
20K → Half483-79#25749#25828
Half → 25K60148-88#25828#25916
25K → 30K95123-28#25916#25944
30K → 20M7029+41#25944#25903
20M → 21M6527+38#25903#25865
21M → 35K3122+9#25865#25856
35K → 23M7510+65#25856#25791
23M → 24M6012+48#25791#25743
24M → 40K4912+37#25743#25706
40K → 25.2M916-7#25706#25713
25.2M → Finish539+44#25713#25669
TOTALS5876990-6403
📊

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