Boston Marathon logo
BOSTON MARATHON 2025

Amy Leong

Bib: 18474•F

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:17
Rank: #14972
Start → 5K
24:17 | 7:49/mi
10K· 6.21 mi
48:21
Rank: #14609 (+363)
5K → 10K
24:04 | 7:45/mi
15K· 9.32 mi
1:12:16
Rank: #14240 (+369)
10K → 15K
23:55 | 7:42/mi
20K· 12.43 mi
1:36:17
Rank: #13786 (+454)
15K → 20K
24:01 | 7:44/mi
Half· 13.11 mi
1:41:36
Rank: #13796 (-10)
20K → Half
5:19 | 7:48/mi
25K· 15.53 mi
2:00:45
Rank: #13651 (+145)
Half → 25K
19:09 | 7:54/mi
30K· 18.64 mi
2:27:10
Rank: #13847 (-196)
25K → 30K
26:25 | 8:30/mi
20M
2:39:29
Rank: #14108 (-261)
30K → 20M
12:19 | 9:04/mi
21M
2:49:14
Rank: #14346 (-238)
20M → 21M
9:45 | 9:45/mi
35K· 21.75 mi
2:56:01
Rank: #14529 (-183)
21M → 35K
6:47 | 9:04/mi
23M
3:07:25
Rank: #14662 (-133)
35K → 23M
11:24 | 9:06/mi
24M
3:16:20
Rank: #14756 (-94)
23M → 24M
8:55 | 8:55/mi
40K· 24.85 mi
3:24:30
Rank: #14941 (-185)
24M → 40K
8:10 | 9:33/mi
25.2M
3:28:09
Rank: #15030 (-89)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
3:36:36
Rank: #15000 (+30)
25.2M → Finish
8:27 | 8:18/mi

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
Time1:41:36
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:55:00
Pace8:46 /mi
📊Positive Split: 13.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3524:177:4924:17
7:49
-
10K
6.21 mi11:39:3948:217:4724:04
7:45
-0:04
15K
9.32 mi12:03:341:12:167:4523:55
7:42
-0:03
20K
12.43 mi12:27:351:36:177:4524:01
7:44
+0:02
Half
13.11 mi12:32:541:41:367:455:19
7:48
+0:04
25K
15.53 mi12:52:032:00:457:4619:09
7:54
+0:06
30K
18.64 mi13:18:282:27:107:5426:25
8:30
+0:36
20M
20.00 mi13:30:472:39:297:5812:19
9:04
+0:34
21M
21.00 mi13:40:322:49:148:049:45
9:45
+0:41
35K
21.75 mi13:47:192:56:018:066:47
9:04
-0:41
23M
23.00 mi13:58:433:07:258:0911:24
9:06
+0:02
24M
24.00 mi14:07:383:16:208:118:55
8:55
-0:11
40K
24.85 mi14:15:483:24:308:148:10
9:33
+0:38
25.2M
25.20 mi14:19:273:28:098:163:39
10:35
+1:02
Finish
26.22 mi14:27:543:36:368:168:27
8:18
-2:17

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

7:42 /mi

Average Pace

8:16 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:45

56% of race

Time at Steady Pace

43:47

20% of race

Time at Slower Pace

52:04

24% of race

Average Pace: 8:16 /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 mi11:15:3524:177:4924:17
7:49
#14972
10K
6.21 mi11:39:3948:217:4724:04
7:45
#14609
15K
9.32 mi12:03:341:12:167:4523:55
7:42
#14240
20K
12.43 mi12:27:351:36:177:4524:01
7:44
#13786
Half
13.11 mi12:32:541:41:367:455:19
7:48
#13796
25K
15.53 mi12:52:032:00:457:4619:09
7:54
#13651
30K
18.64 mi13:18:282:27:107:5426:25
8:30
#13847
20M
20.00 mi13:30:472:39:297:5812:19
9:04
#14108
21M
21.00 mi13:40:322:49:148:049:45
9:45
#14346
35K
21.75 mi13:47:192:56:018:066:47
9:04
#14529
23M
23.00 mi13:58:433:07:258:0911:24
9:06
#14662
24M
24.00 mi14:07:383:16:208:118:55
8:55
#14756
40K
24.85 mi14:15:483:24:308:148:10
9:33
#14941
25.2M
25.20 mi14:19:273:28:098:163:39
10:35
#15030
Finish
26.22 mi14:27:543:36:368:168:27
8:18
#15000
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi149724513451313504(Top 48%)3742(Top 31%)3742(Top 68%)
10K6.21 mi3.10 mi14609+3634306+2074306+20714315(Top 50%)4146(Top 34%)4146(Top 76%)
15K9.32 mi3.11 mi14240+3694110+1964110+19613504(Top 48%)3742(Top 31%)3742(Top 68%)
20K12.43 mi3.11 mi13786+4543890+2203890+22012686(Top 45%)3381(Top 28%)3381(Top 62%)
Half13.11 mi0.68 mi13796-103904-143904-1414293(Top 50%)4244(Top 35%)4244(Top 78%)
25K15.53 mi2.42 mi13651+1453847+573847+5713101(Top 46%)3730(Top 31%)3730(Top 68%)
30K18.64 mi3.11 mi13847-1964022-1754022-17514778(Top 52%)4784(Top 39%)4784(Top 87%)
20M20.00 mi1.36 mi14108-2614200-1784200-17817142(Top 60%)6213(Top 51%)6213(Top 114%)
21M21.00 mi1.00 mi14346-2384348-1484348-14817263(Top 61%)6403(Top 52%)6403(Top 117%)
35K21.75 mi0.75 mi14529-1834472-1244472-12418574(Top 65%)7228(Top 59%)7228(Top 132%)
23M23.00 mi1.25 mi14662-1334583-1114583-11116846(Top 59%)6353(Top 52%)6353(Top 116%)
24M24.00 mi1.00 mi14756-944662-794662-7916936(Top 60%)6460(Top 53%)6460(Top 118%)
40K24.85 mi0.85 mi14941-1854795-1334795-13318910(Top 67%)7580(Top 62%)7580(Top 139%)
25.2M25.20 mi0.35 mi15030-894868-734868-7319307(Top 68%)7795(Top 64%)7795(Top 143%)
Finish26.22 mi1.02 mi15000+304875-74875-714882(Top 52%)5410(Top 44%)5410(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

13504

Females

3742

F18-39

3742

5K→10K

3.1 - 6.2 mi

Top 50%
×5stories
+79ft-138ft

Overall

14315

Females

4146

F18-39

4146

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

13504

Females

3742

F18-39

3742

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12686

Females

3381

F18-39

3381

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

14293

Females

4244

F18-39

4244

Half→25K

13.1 - 15.5 mi

Top 46%
×4stories
+66ft-88ft

Overall

13101

Females

3730

F18-39

3730

25K→30K

15.5 - 18.6 mi

Top 52%
×9stories
+181ft-148ft

Overall

14778

Females

4784

F18-39

4784

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

17142

Females

6213

F18-39

6213

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17263

Females

6403

F18-39

6403

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

18574

Females

7228

F18-39

7228

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16846

Females

6353

F18-39

6353

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

16936

Females

6460

F18-39

6460

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

18910

Females

7580

F18-39

7580

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

19307

Females

7795

F18-39

7795

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

14882

Females

5410

F18-39

5410

Passing Analysis

Category:
Athletes Passed
2264
Passed By
2292
Net Change
-28
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14972
5K → 10K517154+363#14972#14609
10K → 15K41647+369#14609#14240
15K → 20K48329+454#14240#13786
20K → Half2939-10#13786#13796
Half → 25K245100+145#13796#13651
25K → 30K189385-196#13651#13847
30K → 20M58319-261#13847#14108
20M → 21M60298-238#14108#14346
21M → 35K30213-183#14346#14529
35K → 23M58191-133#14529#14662
23M → 24M49143-94#14662#14756
24M → 40K28213-185#14756#14941
40K → 25.2M20109-89#14941#15030
25.2M → Finish8252+30#15030#15000
TOTALS22642292-28
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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