Boston Marathon logo
BOSTON MARATHON 2025

Rachel Jastrebsky

Bib: 16251•F

NH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Division (F18-39)
#0 / 5469
Top 33%
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
7:36/mi
23:38
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
47:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:10:13
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:33:28
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:38:35
↑ 19↓ 370.5%
25K· 15.53 mi
7:31/mi
1:56:49
↑ 66↓ 880.2%
30K· 18.64 mi
7:45/mi
2:20:54
↑ 181↓ 1480.2%
20M
7:47/mi
2:31:29
↑ 64↓ 500.2%
21M
8:09/mi
2:39:38
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
2:45:21
↑ 17↓ 861.7%
23M
7:53/mi
2:55:13
↑ 23↓ 630.6%
24M
7:48/mi
3:03:01
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:09:41
↓ 200.3%
25.2M
8:22/mi
3:12:34
↑ 13↓ 160.2%
Finish· 26.22 mi
7:24/mi
3:20:06
↑ 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
Time1:38:35
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:41:31
Pace7:45 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:4223:387:3623:38
7:36
-
10K
6.21 mi11:21:0547:017:3423:23
7:32
-0:04
15K
9.32 mi11:44:171:10:137:3223:12
7:28
-0:04
20K
12.43 mi12:07:321:33:287:3123:15
7:29
+0:01
Half
13.11 mi12:12:391:38:357:315:07
7:30
+0:01
25K
15.53 mi12:30:531:56:497:3118:14
7:31
+0:01
30K
18.64 mi12:54:582:20:547:3424:05
7:45
+0:14
20M
20.00 mi13:05:332:31:297:3410:35
7:47
+0:02
21M
21.00 mi13:13:422:39:387:368:09
8:09
+0:22
35K
21.75 mi13:19:252:45:217:365:43
7:38
-0:31
23M
23.00 mi13:29:172:55:137:379:52
7:53
+0:15
24M
24.00 mi13:37:053:03:017:387:48
7:48
-0:05
40K
24.85 mi13:43:453:09:417:386:40
7:48
0:00
25.2M
25.20 mi13:46:383:12:347:382:53
8:22
+0:34
Finish
26.22 mi13:54:103:20:067:387:32
7:24
-0:58

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

7:24 /mi

Average Pace

7:38 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:04

94% of race

Time at Steady Pace

11:02

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:38 /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 mi10:57:4223:387:3623:38
7:36
#13186
10K
6.21 mi11:21:0547:017:3423:23
7:32
#12720
15K
9.32 mi11:44:171:10:137:3223:12
7:28
#12275
20K
12.43 mi12:07:321:33:287:3123:15
7:29
#11816
Half
13.11 mi12:12:391:38:357:315:07
7:30
#11809
25K
15.53 mi12:30:531:56:497:3118:14
7:31
#11502
30K
18.64 mi12:54:582:20:547:3424:05
7:45
#11105
20M
20.00 mi13:05:332:31:297:3410:35
7:47
#10893
21M
21.00 mi13:13:422:39:387:368:09
8:09
#10689
35K
21.75 mi13:19:252:45:217:365:43
7:38
#10638
23M
23.00 mi13:29:172:55:137:379:52
7:53
#10497
24M
24.00 mi13:37:053:03:017:387:48
7:48
#10443
40K
24.85 mi13:43:453:09:417:386:40
7:48
#10333
25.2M
25.20 mi13:46:383:12:347:382:53
8:22
#10287
Finish
26.22 mi13:54:103:20:067:387:32
7:24
#10178
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131863423342311496(Top 40%)2631(Top 22%)2631(Top 48%)
10K6.21 mi3.10 mi12720+4663187+2363187+23612344(Top 43%)2996(Top 25%)2996(Top 55%)
15K9.32 mi3.11 mi12275+4452985+2022985+20211496(Top 40%)2631(Top 22%)2631(Top 48%)
20K12.43 mi3.11 mi11816+4592770+2152770+21510632(Top 37%)2282(Top 19%)2282(Top 42%)
Half13.11 mi0.68 mi11809+72779-92779-911740(Top 41%)2779(Top 23%)2779(Top 51%)
25K15.53 mi2.42 mi11502+3072653+1262653+12610167(Top 36%)2172(Top 18%)2172(Top 40%)
30K18.64 mi3.11 mi11105+3972519+1342519+1349583(Top 34%)2093(Top 17%)2093(Top 38%)
20M20.00 mi1.36 mi10893+2122454+652454+658973(Top 32%)1980(Top 16%)1980(Top 36%)
21M21.00 mi1.00 mi10689+2042390+642390+648299(Top 29%)1858(Top 15%)1858(Top 34%)
35K21.75 mi0.75 mi10638+512379+112379+119668(Top 34%)2443(Top 20%)2443(Top 45%)
23M23.00 mi1.25 mi10497+1412349+302349+309176(Top 32%)2337(Top 19%)2337(Top 43%)
24M24.00 mi1.00 mi10443+542355-62355-69826(Top 35%)2714(Top 22%)2714(Top 50%)
40K24.85 mi0.85 mi10333+1102340+152340+158778(Top 31%)2348(Top 19%)2348(Top 43%)
25.2M25.20 mi0.35 mi10287+462337+32337+38037(Top 28%)2095(Top 17%)2095(Top 38%)
Finish26.22 mi1.02 mi10178+1092308+292308+298459(Top 30%)2270(Top 19%)2270(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

11496

Females

2631

F18-39

2631

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

12344

Females

2996

F18-39

2996

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

11496

Females

2631

F18-39

2631

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10632

Females

2282

F18-39

2282

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11740

Females

2779

F18-39

2779

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

10167

Females

2172

F18-39

2172

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9583

Females

2093

F18-39

2093

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8973

Females

1980

F18-39

1980

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8299

Females

1858

F18-39

1858

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9668

Females

2443

F18-39

2443

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

9176

Females

2337

F18-39

2337

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9826

Females

2714

F18-39

2714

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8778

Females

2348

F18-39

2348

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

8037

Females

2095

F18-39

2095

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8459

Females

2270

F18-39

2270

Passing Analysis

Category:
Athletes Passed
3502
Passed By
494
Net Change
+3008
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13186
5K → 10K579113+466#13186#12720
10K → 15K48944+445#12720#12275
15K → 20K48122+459#12275#11816
20K → Half3730+7#11816#11809
Half → 25K33629+307#11809#11502
25K → 30K45154+397#11502#11105
30K → 20M22816+212#11105#10893
20M → 21M22117+204#10893#10689
21M → 35K8029+51#10689#10638
35K → 23M17029+141#10638#10497
23M → 24M10753+54#10497#10443
24M → 40K13121+110#10443#10333
40K → 25.2M5812+46#10333#10287
25.2M → Finish13425+109#10287#10178
TOTALS3502494+3008
📊

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