Boston Marathon logo
BOSTON MARATHON 2025

Amy Nelson

Bib: 19311•F

WA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
Masters (Masters Women)
#0 / 6759
Top 22%
Division (F40-44)
#0 / 1718
Top 44%
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
7:52/mi
24:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
48:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:47/mi
1:12:48
↑ 67↓ 78
20K· 12.43 mi
7:54/mi
1:37:22
↑ 106↓ 860.1%
Half· 13.11 mi
7:49/mi
1:42:42
↑ 19↓ 370.5%
25K· 15.53 mi
8:01/mi
2:02:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:28:13
↑ 181↓ 1480.2%
20M
8:39/mi
2:39:58
↑ 64↓ 500.2%
21M
9:05/mi
2:49:03
↑ 106↓ 241.6%
35K· 21.75 mi
8:27/mi
2:55:22
↑ 17↓ 861.7%
23M
8:42/mi
3:06:16
↑ 23↓ 630.6%
24M
8:38/mi
3:14:54
↓ 821.3%
40K· 24.85 mi
8:42/mi
3:22:20
↓ 200.3%
25.2M
9:23/mi
3:25:34
↑ 13↓ 160.2%
Finish· 26.22 mi
8:17/mi
3:34:00
↑ 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
Time1:42:42
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:51:18
Pace8:29 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4824:257:5224:25
7:52
-
10K
6.21 mi11:40:0048:377:4924:12
7:47
-0:05
15K
9.32 mi12:04:111:12:487:4924:11
7:47
0:00
20K
12.43 mi12:28:451:37:227:5024:34
7:54
+0:07
Half
13.11 mi12:34:051:42:427:505:20
7:49
-0:05
25K
15.53 mi12:53:322:02:097:5219:27
8:01
+0:12
30K
18.64 mi13:19:362:28:137:5726:04
8:23
+0:22
20M
20.00 mi13:31:212:39:588:0011:45
8:39
+0:16
21M
21.00 mi13:40:262:49:038:039:05
9:05
+0:26
35K
21.75 mi13:46:452:55:228:046:19
8:27
-0:38
23M
23.00 mi13:57:393:06:168:0610:54
8:42
+0:15
24M
24.00 mi14:06:173:14:548:078:38
8:38
-0:04
40K
24.85 mi14:13:433:22:208:087:26
8:42
+0:04
25.2M
25.20 mi14:16:573:25:348:093:14
9:23
+0:41
Finish
26.22 mi14:25:233:34:008:108:26
8:17
-1:06

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

7:47 /mi

Average Pace

8:10 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:09

57% of race

Time at Steady Pace

40:49

19% of race

Time at Slower Pace

51:02

24% of race

Average Pace: 8:10 /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 mi11:15:4824:257:5224:25
7:52
#15338
10K
6.21 mi11:40:0048:377:4924:12
7:47
#15000
15K
9.32 mi12:04:111:12:487:4924:11
7:47
#14724
20K
12.43 mi12:28:451:37:227:5024:34
7:54
#14537
Half
13.11 mi12:34:051:42:427:505:20
7:49
#14521
25K
15.53 mi12:53:322:02:097:5219:27
8:01
#14417
30K
18.64 mi13:19:362:28:137:5726:04
8:23
#14296
20M
20.00 mi13:31:212:39:588:0011:45
8:39
#14314
21M
21.00 mi13:40:262:49:038:039:05
9:05
#14284
35K
21.75 mi13:46:452:55:228:046:19
8:27
#14311
23M
23.00 mi13:57:393:06:168:0610:54
8:42
#14337
24M
24.00 mi14:06:173:14:548:078:38
8:38
#14343
40K
24.85 mi14:13:433:22:208:087:26
8:42
#14327
25.2M
25.20 mi14:16:573:25:348:093:14
9:23
#14309
Finish
26.22 mi14:25:233:34:008:108:26
8:17
#14292
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi153384741474114249(Top 50%)4172(Top 34%)4172(Top 243%)
10K6.21 mi3.10 mi15000+3384551+1904551+19014720(Top 52%)4377(Top 36%)4377(Top 255%)
15K9.32 mi3.11 mi14724+2764388+1634388+16314249(Top 50%)4172(Top 34%)4172(Top 243%)
20K12.43 mi3.11 mi14537+1874311+774311+7714164(Top 50%)4181(Top 34%)4181(Top 243%)
Half13.11 mi0.68 mi14521+164304+74304+714467(Top 51%)4332(Top 35%)4332(Top 252%)
25K15.53 mi2.42 mi14417+1044285+194285+1914085(Top 50%)4245(Top 35%)4245(Top 247%)
30K18.64 mi3.11 mi14296+1214278+74278+714089(Top 50%)4425(Top 36%)4425(Top 258%)
20M20.00 mi1.36 mi14314-184308-304308-3014710(Top 52%)4885(Top 40%)4885(Top 284%)
21M21.00 mi1.00 mi14284+304313-54313-514024(Top 49%)4646(Top 38%)4646(Top 270%)
35K21.75 mi0.75 mi14311-274348-354348-3515144(Top 53%)5306(Top 43%)5306(Top 309%)
23M23.00 mi1.25 mi14337-264396-484396-4814599(Top 51%)5119(Top 42%)5119(Top 298%)
24M24.00 mi1.00 mi14343-64429-334429-3315364(Top 54%)5575(Top 46%)5575(Top 325%)
40K24.85 mi0.85 mi14327+164454-254454-2514588(Top 51%)5287(Top 43%)5287(Top 308%)
25.2M25.20 mi0.35 mi14309+184455-14455-113925(Top 49%)4968(Top 41%)4968(Top 289%)
Finish26.22 mi1.02 mi14292+174475-204475-2014782(Top 52%)5355(Top 44%)5355(Top 312%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

14249

Females

4172

F40-44

4172

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14720

Females

4377

F40-44

4377

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

14249

Females

4172

F40-44

4172

15K→20K

9.3 - 12.4 mi

Top 50%
×5story building
+106ft-86ft

Overall

14164

Females

4181

F40-44

4181

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

14467

Females

4332

F40-44

4332

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14085

Females

4245

F40-44

4245

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14089

Females

4425

F40-44

4425

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14710

Females

4885

F40-44

4885

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

14024

Females

4646

F40-44

4646

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

15144

Females

5306

F40-44

5306

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

14599

Females

5119

F40-44

5119

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

15364

Females

5575

F40-44

5575

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14588

Females

5287

F40-44

5287

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13925

Females

4968

F40-44

4968

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

14782

Females

5355

F40-44

5355

Passing Analysis

Category:
Athletes Passed
2375
Passed By
1329
Net Change
+1046
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15338
5K → 10K484146+338#15338#15000
10K → 15K35983+276#15000#14724
15K → 20K288101+187#14724#14537
20K → Half5236+16#14537#14521
Half → 25K217113+104#14521#14417
25K → 30K311190+121#14417#14296
30K → 20M111129-18#14296#14314
20M → 21M12292+30#14314#14284
21M → 35K5683-27#14284#14311
35K → 23M109135-26#14311#14337
23M → 24M6874-6#14337#14343
24M → 40K7963+16#14343#14327
40K → 25.2M3719+18#14327#14309
25.2M → Finish8265+17#14309#14292
TOTALS23751329+1046
📊

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