Boston Marathon logo
BOSTON MARATHON 2025

Gail Thomson

Bib: 16727•F

NC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F70-74)
#0 / 71
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
10:05/mi
31:21
↑ 97↓ 3451.5%
10K· 6.21 mi
10:27/mi
1:03:48
↑ 79↓ 1380.4%
15K· 9.32 mi
11:12/mi
1:38:36
↑ 67↓ 78
20K· 12.43 mi
11:40/mi
2:14:51
↑ 106↓ 860.1%
Half· 13.11 mi
10:30/mi
2:22:01
↑ 19↓ 370.5%
25K· 15.53 mi
11:14/mi
2:49:14
↑ 66↓ 880.2%
30K· 18.64 mi
11:35/mi
3:25:13
↑ 181↓ 1480.2%
20M
11:18/mi
3:40:34
↑ 64↓ 500.2%
21M
12:13/mi
3:52:47
↑ 106↓ 241.6%
35K· 21.75 mi
10:27/mi
4:00:36
↑ 17↓ 861.7%
23M
11:00/mi
4:14:22
↑ 23↓ 630.6%
24M
11:04/mi
4:25:26
↓ 821.3%
40K· 24.85 mi
11:18/mi
4:35:06
↓ 200.3%
25.2M
12:28/mi
4:39:24
↑ 13↓ 160.2%
Finish· 26.22 mi
9:50/mi
4:49:25
↑ 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
Time2:22:01
Pace10:50 /mi
2nd Half
Distance13.11 mi
Time2:27:24
Pace11:15 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:04:3431:2110:0531:21
10:05
-
10K
6.21 mi11:37:011:03:4810:1632:27
10:27
+0:22
15K
9.32 mi12:11:491:38:3610:3534:48
11:12
+0:45
20K
12.43 mi12:48:042:14:5110:5136:15
11:40
+0:28
Half
13.11 mi12:55:142:22:0110:507:10
10:30
-1:10
25K
15.53 mi13:22:272:49:1410:5427:13
11:14
+0:44
30K
18.64 mi13:58:263:25:1311:0135:59
11:35
+0:21
20M
20.00 mi14:13:473:40:3411:0215:21
11:18
-0:17
21M
21.00 mi14:26:003:52:4711:0512:13
12:13
+0:55
35K
21.75 mi14:33:494:00:3611:047:49
10:27
-1:46
23M
23.00 mi14:47:354:14:2211:0413:46
11:00
+0:33
24M
24.00 mi14:58:394:25:2611:0411:04
11:04
+0:04
40K
24.85 mi15:08:194:35:0611:049:40
11:18
+0:14
25.2M
25.20 mi15:12:374:39:2411:054:18
12:28
+1:10
Finish
26.22 mi15:22:384:49:2511:0310:01
9:50
-2:38

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

9:50 /mi

Average Pace

11:03 /mi

Slowest Pace

12:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:48

31% of race

Time at Steady Pace

1:51:52

39% of race

Time at Slower Pace

1:28:45

31% of race

Average Pace: 11:02 /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 mi11:04:3431:2110:0531:21
10:05
#25790
10K
6.21 mi11:37:011:03:4810:1632:27
10:27
#26036
15K
9.32 mi12:11:491:38:3610:3534:48
11:12
#26421
20K
12.43 mi12:48:042:14:5110:5136:15
11:40
#26570
Half
13.11 mi12:55:142:22:0110:507:10
10:30
#26515
25K
15.53 mi13:22:272:49:1410:5427:13
11:14
#26340
30K
18.64 mi13:58:263:25:1311:0135:59
11:35
#26087
20M
20.00 mi14:13:473:40:3411:0215:21
11:18
#25953
21M
21.00 mi14:26:003:52:4711:0512:13
12:13
#25856
35K
21.75 mi14:33:494:00:3611:047:49
10:27
#25787
23M
23.00 mi14:47:354:14:2211:0413:46
11:00
#25690
24M
24.00 mi14:58:394:25:2611:0411:04
11:04
#25638
40K
24.85 mi15:08:194:35:0611:049:40
11:18
#25581
25.2M
25.20 mi15:12:374:39:2411:054:18
12:28
#25552
Finish
26.22 mi15:22:384:49:2511:0310:01
9:50
#25467
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF70-74Seg. OverallSeg. FemalesSeg. F70-74
5K3.11 mi3.11 mi25790106361063626924(Top 95%)11334(Top 93%)11334(Top 15963%)
10K6.21 mi3.10 mi26036-24610798-16210798-16226167(Top 92%)10888(Top 89%)10888(Top 15335%)
15K9.32 mi3.11 mi26421-38511013-21511013-21526924(Top 95%)11334(Top 93%)11334(Top 15963%)
20K12.43 mi3.11 mi26570-14911105-9211105-9226807(Top 94%)11277(Top 92%)11277(Top 15883%)
Half13.11 mi0.68 mi26515+5511076+2911076+2925788(Top 91%)10712(Top 88%)10712(Top 15087%)
25K15.53 mi2.42 mi26340+17510976+10010976+10025505(Top 90%)10572(Top 86%)10572(Top 14890%)
30K18.64 mi3.11 mi26087+25310871+10510871+10524968(Top 88%)10392(Top 85%)10392(Top 14637%)
20M20.00 mi1.36 mi25953+13410808+6310808+6324170(Top 85%)10050(Top 82%)10050(Top 14155%)
21M21.00 mi1.00 mi25856+9710774+3410774+3423943(Top 84%)10003(Top 82%)10003(Top 14089%)
35K21.75 mi0.75 mi25787+6910742+3210742+3223027(Top 81%)9574(Top 78%)9574(Top 13485%)
23M23.00 mi1.25 mi25690+9710706+3610706+3623196(Top 82%)9713(Top 79%)9713(Top 13680%)
24M24.00 mi1.00 mi25638+5210694+1210694+1224111(Top 85%)10174(Top 83%)10174(Top 14330%)
40K24.85 mi0.85 mi25581+5710672+2210672+2223753(Top 84%)10060(Top 82%)10060(Top 14169%)
25.2M25.20 mi0.35 mi25552+2910662+1010662+1024089(Top 85%)10217(Top 84%)10217(Top 14390%)
Finish26.22 mi1.02 mi25467+8510615+4710615+4722352(Top 79%)9357(Top 77%)9357(Top 13179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

26924

Females

11334

F70-74

11334

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

26167

Females

10888

F70-74

10888

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

26924

Females

11334

F70-74

11334

15K→20K

9.3 - 12.4 mi

Top 94%
×5story building
+106ft-86ft

Overall

26807

Females

11277

F70-74

11277

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

25788

Females

10712

F70-74

10712

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25505

Females

10572

F70-74

10572

25K→30K

15.5 - 18.6 mi

Top 88%
×9story building
+181ft-148ft

Overall

24968

Females

10392

F70-74

10392

30K→20M

18.6 - 20.0 mi

Top 85%
×5story building
+64ft-50ft

Overall

24170

Females

10050

F70-74

10050

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23943

Females

10003

F70-74

10003

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

23027

Females

9574

F70-74

9574

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

23196

Females

9713

F70-74

9713

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

24111

Females

10174

F70-74

10174

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23753

Females

10060

F70-74

10060

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24089

Females

10217

F70-74

10217

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2story building
+22ft-21ft

Overall

22352

Females

9357

F70-74

9357

Passing Analysis

Category:
Athletes Passed
1412
Passed By
1089
Net Change
+323
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25790
5K → 10K112358-246#25790#26036
10K → 15K40425-385#26036#26421
15K → 20K72221-149#26421#26570
20K → Half572+55#26570#26515
Half → 25K19116+175#26515#26340
25K → 30K26714+253#26340#26087
30K → 20M14511+134#26087#25953
20M → 21M10710+97#25953#25856
21M → 35K701+69#25856#25787
35K → 23M992+97#25787#25690
23M → 24M6715+52#25690#25638
24M → 40K669+57#25638#25581
40K → 25.2M334+29#25581#25552
25.2M → Finish861+85#25552#25467
TOTALS14121089+323
📊

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