Boston Marathon logo
BOSTON MARATHON 2025

Emily Oster

Bib: 14805•F

RI

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 30%
Gender (Female)
#0 / 12228
Top 13%
Masters (Masters Women)
#0 / 6759
Top 4%
Division (F45-49)
#0 / 1813
Top 4%
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
7:27/mi
23:08
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
46:08
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:14
↑ 67↓ 78
20K· 12.43 mi
7:22/mi
1:32:08
↑ 106↓ 860.1%
Half· 13.11 mi
7:24/mi
1:37:11
↑ 19↓ 370.5%
25K· 15.53 mi
7:22/mi
1:55:02
↑ 66↓ 880.2%
30K· 18.64 mi
7:24/mi
2:18:00
↑ 181↓ 1480.2%
20M
7:24/mi
2:28:03
↑ 64↓ 500.2%
21M
7:50/mi
2:35:53
↑ 106↓ 241.6%
35K· 21.75 mi
7:10/mi
2:41:15
↑ 17↓ 861.7%
23M
7:33/mi
2:50:42
↑ 23↓ 630.6%
24M
7:23/mi
2:58:05
↓ 821.3%
40K· 24.85 mi
7:41/mi
3:04:39
↓ 200.3%
25.2M
8:10/mi
3:07:28
↑ 13↓ 160.2%
Finish· 26.22 mi
7:17/mi
3:14:53
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:37:11
Pace7:25 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:42
Pace7:27 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5823:087:2723:08
7:27
-
10K
6.21 mi11:15:5846:087:2523:00
7:24
-0:03
15K
9.32 mi11:39:041:09:147:2623:06
7:26
+0:02
20K
12.43 mi12:01:581:32:087:2522:54
7:22
-0:04
Half
13.11 mi12:07:011:37:117:255:03
7:24
+0:02
25K
15.53 mi12:24:521:55:027:2417:51
7:22
-0:02
30K
18.64 mi12:47:502:18:007:2422:58
7:24
+0:02
20M
20.00 mi12:57:532:28:037:2410:03
7:24
0:00
21M
21.00 mi13:05:432:35:537:257:50
7:50
+0:26
35K
21.75 mi13:11:052:41:157:255:22
7:10
-0:40
23M
23.00 mi13:20:322:50:427:259:27
7:33
+0:23
24M
24.00 mi13:27:552:58:057:257:23
7:23
-0:10
40K
24.85 mi13:34:293:04:397:266:34
7:41
+0:18
25.2M
25.20 mi13:37:183:07:287:262:49
8:10
+0:29
Finish
26.22 mi13:44:433:14:537:267:25
7:17
-0:53

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

7:10 /mi

Average Pace

7:26 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:04

99% of race

Time at Steady Pace

2:49

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi10:52:5823:087:2723:08
7:27
#11761
10K
6.21 mi11:15:5846:087:2523:00
7:24
#11462
15K
9.32 mi11:39:041:09:147:2623:06
7:26
#11326
20K
12.43 mi12:01:581:32:087:2522:54
7:22
#10875
Half
13.11 mi12:07:011:37:117:255:03
7:24
#10859
25K
15.53 mi12:24:521:55:027:2417:51
7:22
#10503
30K
18.64 mi12:47:502:18:007:2422:58
7:24
#9734
20M
20.00 mi12:57:532:28:037:2410:03
7:24
#9402
21M
21.00 mi13:05:432:35:537:257:50
7:50
#9177
35K
21.75 mi13:11:052:41:157:255:22
7:10
#9051
23M
23.00 mi13:20:322:50:427:259:27
7:33
#8824
24M
24.00 mi13:27:552:58:057:257:23
7:23
#8701
40K
24.85 mi13:34:293:04:397:266:34
7:41
#8620
25.2M
25.20 mi13:37:183:07:287:262:49
8:10
#8569
Finish
26.22 mi13:44:433:14:537:267:25
7:17
#8512
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi117612656265611194(Top 39%)2467(Top 20%)2467(Top 136%)
10K6.21 mi3.10 mi11462+2992532+1242532+12411211(Top 39%)2418(Top 20%)2418(Top 133%)
15K9.32 mi3.11 mi11326+1362484+482484+4811194(Top 39%)2467(Top 20%)2467(Top 136%)
20K12.43 mi3.11 mi10875+4512274+2102274+2109658(Top 34%)1810(Top 15%)1810(Top 100%)
Half13.11 mi0.68 mi10859+162272+22272+210909(Top 38%)2351(Top 19%)2351(Top 130%)
25K15.53 mi2.42 mi10503+3562130+1422130+1428854(Top 31%)1577(Top 13%)1577(Top 87%)
30K18.64 mi3.11 mi9734+7691840+2901840+2907018(Top 25%)1020(Top 8%)1020(Top 56%)
20M20.00 mi1.36 mi9402+3321724+1161724+1166388(Top 22%)928(Top 8%)928(Top 51%)
21M21.00 mi1.00 mi9177+2251651+731651+736423(Top 23%)1076(Top 9%)1076(Top 59%)
35K21.75 mi0.75 mi9051+1261615+361615+366492(Top 23%)1108(Top 9%)1108(Top 61%)
23M23.00 mi1.25 mi8824+2271562+531562+536931(Top 24%)1369(Top 11%)1369(Top 76%)
24M24.00 mi1.00 mi8701+1231550+121550+126972(Top 25%)1442(Top 12%)1442(Top 80%)
40K24.85 mi0.85 mi8620+811558-81558-87978(Top 28%)1970(Top 16%)1970(Top 109%)
25.2M25.20 mi0.35 mi8569+511551+71551+76938(Top 24%)1610(Top 13%)1610(Top 89%)
Finish26.22 mi1.02 mi8512+571547+41547+47637(Top 27%)1909(Top 16%)1909(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11194

Females

2467

F45-49

2467

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

11211

Females

2418

F45-49

2418

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11194

Females

2467

F45-49

2467

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9658

Females

1810

F45-49

1810

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10909

Females

2351

F45-49

2351

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8854

Females

1577

F45-49

1577

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

7018

Females

1020

F45-49

1020

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

6388

Females

928

F45-49

928

20M→21M

20.0 - 21.0 mi

Top 23%
×8story building
+106ft-24ft

Overall

6423

Females

1076

F45-49

1076

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6492

Females

1108

F45-49

1108

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6931

Females

1369

F45-49

1369

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6972

Females

1442

F45-49

1442

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7978

Females

1970

F45-49

1970

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6938

Females

1610

F45-49

1610

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7637

Females

1909

F45-49

1909

Passing Analysis

Category:
Athletes Passed
3700*
Passed By
451
Net Change
+3249
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11761
5K → 10K436137+299#11761#11462
10K → 15K251115+136#11462#11326
15K → 20K46716+451#11326#10875
20K → Half4024+16#10875#10859
Half → 25K37115+356#10859#10503
25K → 30K770*1+769#10503#9734
30K → 20M3331+332#9734#9402
20M → 21M2338+225#9402#9177
21M → 35K1304+126#9177#9051
35K → 23M24114+227#9051#8824
23M → 24M14522+123#8824#8701
24M → 40K12140+81#8701#8620
40K → 25.2M6211+51#8620#8569
25.2M → Finish10043+57#8569#8512
TOTALS3700*451+3249

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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