Boston Marathon logo
BOSTON MARATHON 2025

Emily Wong

Bib: 12035•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
8:41/mi
26:58
↑ 97↓ 3451.5%
10K· 6.21 mi
8:31/mi
53:27
↑ 79↓ 1380.4%
15K· 9.32 mi
8:58/mi
1:21:19
↑ 67↓ 78
20K· 12.43 mi
8:34/mi
1:47:56
↑ 106↓ 860.1%
Half· 13.11 mi
8:30/mi
1:53:44
↑ 19↓ 370.5%
25K· 15.53 mi
8:45/mi
2:14:56
↑ 66↓ 880.2%
30K· 18.64 mi
9:13/mi
2:43:33
↑ 181↓ 1480.2%
20M
9:36/mi
2:56:36
↑ 64↓ 500.2%
21M
10:59/mi
3:07:35
↑ 106↓ 241.6%
35K· 21.75 mi
9:49/mi
3:14:56
↑ 17↓ 861.7%
23M
10:53/mi
3:28:34
↑ 23↓ 630.6%
24M
10:10/mi
3:38:44
↓ 821.3%
40K· 24.85 mi
10:58/mi
3:48:07
↓ 200.3%
25.2M
11:21/mi
3:52:02
↑ 13↓ 160.2%
Finish· 26.22 mi
9:39/mi
4:01:52
↑ 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
Time1:53:44
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:08:08
Pace9:46 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:5026:588:4126:58
8:41
-
10K
6.21 mi11:21:1953:278:3626:29
8:31
-0:10
15K
9.32 mi11:49:111:21:198:4327:52
8:58
+0:27
20K
12.43 mi12:15:481:47:568:4126:37
8:34
-0:24
Half
13.11 mi12:21:361:53:448:415:48
8:30
-0:04
25K
15.53 mi12:42:482:14:568:4121:12
8:45
+0:15
30K
18.64 mi13:11:252:43:338:4628:37
9:13
+0:28
20M
20.00 mi13:24:282:56:368:5013:03
9:36
+0:23
21M
21.00 mi13:35:273:07:358:5610:59
10:59
+1:23
35K
21.75 mi13:42:483:14:568:587:21
9:49
-1:10
23M
23.00 mi13:56:263:28:349:0413:38
10:53
+1:04
24M
24.00 mi14:06:363:38:449:0710:10
10:10
-0:43
40K
24.85 mi14:15:593:48:079:119:23
10:58
+0:48
25.2M
25.20 mi14:19:543:52:029:123:55
11:21
+0:23
Finish
26.22 mi14:29:444:01:529:149:50
9:39
-1:42

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

8:30 /mi

Average Pace

9:14 /mi

Slowest Pace

11:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:56

56% of race

Time at Steady Pace

58:51

24% of race

Time at Slower Pace

48:05

20% of race

Average Pace: 9:13 /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 mi10:54:5026:588:4126:58
8:41
#20926
10K
6.21 mi11:21:1953:278:3626:29
8:31
#20409
15K
9.32 mi11:49:111:21:198:4327:52
8:58
#20876
20K
12.43 mi12:15:481:47:568:4126:37
8:34
#20323
Half
13.11 mi12:21:361:53:448:415:48
8:30
#20275
25K
15.53 mi12:42:482:14:568:4121:12
8:45
#19986
30K
18.64 mi13:11:252:43:338:4628:37
9:13
#19720
20M
20.00 mi13:24:282:56:368:5013:03
9:36
#19712
21M
21.00 mi13:35:273:07:358:5610:59
10:59
#19869
35K
21.75 mi13:42:483:14:568:587:21
9:49
#19943
23M
23.00 mi13:56:263:28:349:0413:38
10:53
#20227
24M
24.00 mi14:06:363:38:449:0710:10
10:10
#20357
40K
24.85 mi14:15:593:48:079:119:23
10:58
#20521
25.2M
25.20 mi14:19:543:52:029:123:55
11:21
#20568
Finish
26.22 mi14:29:444:01:529:149:50
9:39
#20620
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi209268036803621903(Top 77%)8487(Top 69%)8487(Top 155%)
10K6.21 mi3.10 mi20409+5177717+3197717+31919946(Top 70%)7439(Top 61%)7439(Top 136%)
15K9.32 mi3.11 mi20876-4677971-2547971-25421903(Top 77%)8487(Top 69%)8487(Top 155%)
20K12.43 mi3.11 mi20323+5537664+3077664+30718665(Top 66%)6731(Top 55%)6731(Top 123%)
Half13.11 mi0.68 mi20275+487636+287636+2819289(Top 68%)7080(Top 58%)7080(Top 129%)
25K15.53 mi2.42 mi19986+2897474+1627474+16218658(Top 66%)6791(Top 56%)6791(Top 124%)
30K18.64 mi3.11 mi19720+2667364+1107364+11018699(Top 66%)6955(Top 57%)6955(Top 127%)
20M20.00 mi1.36 mi19712+87381-177381-1719644(Top 69%)7604(Top 62%)7604(Top 139%)
21M21.00 mi1.00 mi19869-1577494-1137494-11321357(Top 75%)8623(Top 71%)8623(Top 158%)
35K21.75 mi0.75 mi19943-747558-647558-6421403(Top 75%)8718(Top 71%)8718(Top 159%)
23M23.00 mi1.25 mi20227-2847746-1887746-18822972(Top 81%)9587(Top 78%)9587(Top 175%)
24M24.00 mi1.00 mi20357-1307828-827828-8221849(Top 77%)9061(Top 74%)9061(Top 166%)
40K24.85 mi0.85 mi20521-1647934-1067934-10623092(Top 81%)9746(Top 80%)9746(Top 178%)
25.2M25.20 mi0.35 mi20568-477970-367970-3621692(Top 76%)8998(Top 74%)8998(Top 165%)
Finish26.22 mi1.02 mi20620-528010-408010-4021735(Top 77%)9028(Top 74%)9028(Top 165%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

21903

Females

8487

F18-39

8487

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19946

Females

7439

F18-39

7439

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

21903

Females

8487

F18-39

8487

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18665

Females

6731

F18-39

6731

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19289

Females

7080

F18-39

7080

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

18658

Females

6791

F18-39

6791

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18699

Females

6955

F18-39

6955

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19644

Females

7604

F18-39

7604

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

21357

Females

8623

F18-39

8623

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21403

Females

8718

F18-39

8718

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

22972

Females

9587

F18-39

9587

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21849

Females

9061

F18-39

9061

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23092

Females

9746

F18-39

9746

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21692

Females

8998

F18-39

8998

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2story building
+22ft-21ft

Overall

21735

Females

9028

F18-39

9028

Passing Analysis

Category:
Athletes Passed
2327
Passed By
2021
Net Change
+306
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20926
5K → 10K630113+517#20926#20409
10K → 15K75542-467#20409#20876
15K → 20K56613+553#20876#20323
20K → Half6113+48#20323#20275
Half → 25K32233+289#20275#19986
25K → 30K36195+266#19986#19720
30K → 20M10496+8#19720#19712
20M → 21M52209-157#19712#19869
21M → 35K35109-74#19869#19943
35K → 23M30314-284#19943#20227
23M → 24M20150-130#20227#20357
24M → 40K29193-164#20357#20521
40K → 25.2M1663-47#20521#20568
25.2M → Finish2678-52#20568#20620
TOTALS23272021+306
📊

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