Boston Marathon logo
BOSTON MARATHON 2025

Emily Margolis

Bib: 23524•F

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:43/mi
27:06
↑ 97↓ 3451.5%
10K· 6.21 mi
8:59/mi
55:02
↑ 79↓ 1380.4%
15K· 9.32 mi
9:10/mi
1:23:32
↑ 67↓ 78
20K· 12.43 mi
9:11/mi
1:52:05
↑ 106↓ 860.1%
Half· 13.11 mi
9:04/mi
1:58:16
↑ 19↓ 370.5%
25K· 15.53 mi
9:02/mi
2:20:10
↑ 66↓ 880.2%
30K· 18.64 mi
9:32/mi
2:49:46
↑ 181↓ 1480.2%
20M
9:38/mi
3:02:51
↑ 64↓ 500.2%
21M
10:01/mi
3:12:52
↑ 106↓ 241.6%
35K· 21.75 mi
9:16/mi
3:19:48
↑ 17↓ 861.7%
23M
9:19/mi
3:31:28
↑ 23↓ 630.6%
24M
9:37/mi
3:41:05
↓ 821.3%
40K· 24.85 mi
9:38/mi
3:49:19
↓ 200.3%
25.2M
10:32/mi
3:52:57
↑ 13↓ 160.2%
Finish· 26.22 mi
9:07/mi
4:02:14
↑ 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
Time1:58:16
Pace9:01 /mi
2nd Half
Distance13.11 mi
Time2:03:58
Pace9:27 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:5427:068:4327:06
8:43
-
10K
6.21 mi11:52:5055:028:5127:56
8:59
+0:16
15K
9.32 mi12:21:201:23:328:5828:30
9:10
+0:11
20K
12.43 mi12:49:531:52:059:0128:33
9:11
+0:01
Half
13.11 mi12:56:041:58:169:016:11
9:04
-0:07
25K
15.53 mi13:17:582:20:109:0121:54
9:02
-0:02
30K
18.64 mi13:47:342:49:469:0629:36
9:32
+0:30
20M
20.00 mi14:00:393:02:519:0913:05
9:38
+0:06
21M
21.00 mi14:10:403:12:529:1110:01
10:01
+0:23
35K
21.75 mi14:17:363:19:489:116:56
9:16
-0:45
23M
23.00 mi14:29:163:31:289:1211:40
9:19
+0:03
24M
24.00 mi14:38:533:41:059:139:37
9:37
+0:18
40K
24.85 mi14:47:073:49:199:148:14
9:38
+0:01
25.2M
25.20 mi14:50:453:52:579:153:38
10:32
+0:54
Finish
26.22 mi15:00:024:02:149:159:17
9:07
-1:25

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

8:43 /mi

Average Pace

9:15 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:56

32% of race

Time at Steady Pace

1:31:07

38% of race

Time at Slower Pace

1:14:11

31% of race

Average Pace: 9:14 /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 mi11:24:5427:068:4327:06
8:43
#21122
10K
6.21 mi11:52:5055:028:5127:56
8:59
#21744
15K
9.32 mi12:21:201:23:328:5828:30
9:10
#22134
20K
12.43 mi12:49:531:52:059:0128:33
9:11
#22015
Half
13.11 mi12:56:041:58:169:016:11
9:04
#22022
25K
15.53 mi13:17:582:20:109:0121:54
9:02
#21658
30K
18.64 mi13:47:342:49:469:0629:36
9:32
#21355
20M
20.00 mi14:00:393:02:519:0913:05
9:38
#21213
21M
21.00 mi14:10:403:12:529:1110:01
10:01
#21042
35K
21.75 mi14:17:363:19:489:116:56
9:16
#20974
23M
23.00 mi14:29:163:31:289:1211:40
9:19
#20803
24M
24.00 mi14:38:533:41:059:139:37
9:37
#20782
40K
24.85 mi14:47:073:49:199:148:14
9:38
#20730
25.2M
25.20 mi14:50:453:52:579:153:38
10:32
#20705
Finish
26.22 mi15:00:024:02:149:159:17
9:07
#20664
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi211228149814922762(Top 80%)8978(Top 73%)8978(Top 495%)
10K6.21 mi3.10 mi21744-6228469-3208469-32022358(Top 79%)8788(Top 72%)8788(Top 485%)
15K9.32 mi3.11 mi22134-3908669-2008669-20022762(Top 80%)8978(Top 73%)8978(Top 495%)
20K12.43 mi3.11 mi22015+1198605+648605+6421852(Top 77%)8506(Top 70%)8506(Top 469%)
Half13.11 mi0.68 mi22022-78609-48609-422093(Top 78%)8650(Top 71%)8650(Top 477%)
25K15.53 mi2.42 mi21658+3648415+1948415+19420066(Top 71%)7571(Top 62%)7571(Top 418%)
30K18.64 mi3.11 mi21355+3038277+1388277+13820051(Top 71%)7685(Top 63%)7685(Top 424%)
20M20.00 mi1.36 mi21213+1428227+508227+5019714(Top 69%)7642(Top 62%)7642(Top 422%)
21M21.00 mi1.00 mi21042+1718147+808147+8018391(Top 65%)7009(Top 57%)7009(Top 387%)
35K21.75 mi0.75 mi20974+688120+278120+2719479(Top 69%)7711(Top 63%)7711(Top 425%)
23M23.00 mi1.25 mi20803+1718054+668054+6617885(Top 63%)6942(Top 57%)6942(Top 383%)
24M24.00 mi1.00 mi20782+218057-38057-320076(Top 71%)8125(Top 66%)8125(Top 448%)
40K24.85 mi0.85 mi20730+528047+108047+1019227(Top 68%)7747(Top 63%)7747(Top 427%)
25.2M25.20 mi0.35 mi20705+258041+68041+619193(Top 68%)7748(Top 63%)7748(Top 427%)
Finish26.22 mi1.02 mi20664+418036+58036+519573(Top 69%)7910(Top 65%)7910(Top 436%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22762

Females

8978

F45-49

8978

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

22358

Females

8788

F45-49

8788

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22762

Females

8978

F45-49

8978

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

21852

Females

8506

F45-49

8506

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22093

Females

8650

F45-49

8650

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20066

Females

7571

F45-49

7571

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20051

Females

7685

F45-49

7685

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19714

Females

7642

F45-49

7642

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18391

Females

7009

F45-49

7009

21M→35K

21.0 - 21.8 mi

Top 69%
×7story building
+17ft-86ft

Overall

19479

Females

7711

F45-49

7711

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17885

Females

6942

F45-49

6942

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20076

Females

8125

F45-49

8125

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19227

Females

7747

F45-49

7747

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19193

Females

7748

F45-49

7748

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

19573

Females

7910

F45-49

7910

Passing Analysis

Category:
Athletes Passed
2083
Passed By
1625
Net Change
+458
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21122
5K → 10K96718-622#21122#21744
10K → 15K92482-390#21744#22134
15K → 20K242123+119#22134#22015
20K → Half2835-7#22015#22022
Half → 25K37915+364#22022#21658
25K → 30K35956+303#21658#21355
30K → 20M17129+142#21355#21213
20M → 21M19221+171#21213#21042
21M → 35K9022+68#21042#20974
35K → 23M18615+171#20974#20803
23M → 24M6948+21#20803#20782
24M → 40K8028+52#20782#20730
40K → 25.2M349+25#20730#20705
25.2M → Finish6524+41#20705#20664
TOTALS20831625+458
📊

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing