Boston Marathon logo
BOSTON MARATHON 2025

Alexandra Bisson

Bib: 9962•F

SD

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 20%
Division (F18-39)
#0 / 5469
Top 35%
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
7:10/mi
22:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:18/mi
44:58
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:08:06
↑ 67↓ 78
20K· 12.43 mi
7:36/mi
1:31:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:36:48
↑ 19↓ 370.5%
25K· 15.53 mi
7:42/mi
1:55:27
↑ 66↓ 880.2%
30K· 18.64 mi
7:59/mi
2:20:14
↑ 181↓ 1480.2%
20M
8:12/mi
2:31:23
↑ 64↓ 500.2%
21M
8:24/mi
2:39:47
↑ 106↓ 241.6%
35K· 21.75 mi
7:30/mi
2:45:24
↑ 17↓ 861.7%
23M
8:01/mi
2:55:26
↑ 23↓ 630.6%
24M
7:48/mi
3:03:14
↓ 821.3%
40K· 24.85 mi
8:00/mi
3:10:04
↓ 200.3%
25.2M
9:02/mi
3:13:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:47/mi
3:21:07
↑ 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
Time1:36:48
Pace7:23 /mi
2nd Half
Distance13.11 mi
Time1:44:19
Pace7:57 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:2722:177:1022:17
7:10
-
10K
6.21 mi11:11:0844:587:1422:41
7:18
+0:08
15K
9.32 mi11:34:161:08:067:1823:08
7:27
+0:09
20K
12.43 mi11:57:531:31:437:2323:37
7:36
+0:09
Half
13.11 mi12:02:581:36:487:235:05
7:27
-0:09
25K
15.53 mi12:21:371:55:277:2618:39
7:42
+0:15
30K
18.64 mi12:46:242:20:147:3124:47
7:59
+0:17
20M
20.00 mi12:57:332:31:237:3411:09
8:12
+0:13
21M
21.00 mi13:05:572:39:477:378:24
8:24
+0:12
35K
21.75 mi13:11:342:45:247:365:37
7:30
-0:54
23M
23.00 mi13:21:362:55:267:3810:02
8:01
+0:31
24M
24.00 mi13:29:243:03:147:387:48
7:48
-0:13
40K
24.85 mi13:36:143:10:047:396:50
8:00
+0:12
25.2M
25.20 mi13:39:213:13:117:403:07
9:02
+1:02
Finish
26.22 mi13:47:173:21:077:417:56
7:47
-1:15

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

7:41 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:48

39% of race

Time at Steady Pace

1:29:37

45% of race

Time at Slower Pace

32:42

16% of race

Average Pace: 7:40 /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 mi10:48:2722:177:1022:17
7:10
#9258
10K
6.21 mi11:11:0844:587:1422:41
7:18
#9780
15K
9.32 mi11:34:161:08:067:1823:08
7:27
#10273
20K
12.43 mi11:57:531:31:437:2323:37
7:36
#10591
Half
13.11 mi12:02:581:36:487:235:05
7:27
#10611
25K
15.53 mi12:21:371:55:277:2618:39
7:42
#10711
30K
18.64 mi12:46:242:20:147:3124:47
7:59
#10789
20M
20.00 mi12:57:332:31:237:3411:09
8:12
#10851
21M
21.00 mi13:05:572:39:477:378:24
8:24
#10743
35K
21.75 mi13:11:342:45:247:365:37
7:30
#10654
23M
23.00 mi13:21:362:55:267:3810:02
8:01
#10578
24M
24.00 mi13:29:243:03:147:387:48
7:48
#10508
40K
24.85 mi13:36:143:10:047:396:50
8:00
#10459
25.2M
25.20 mi13:39:213:13:117:403:07
9:02
#10471
Finish
26.22 mi13:47:173:21:077:417:56
7:47
#10471
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi92581491149111304(Top 40%)2531(Top 21%)2531(Top 46%)
10K6.21 mi3.10 mi9780-5221704-2131704-21310369(Top 37%)1997(Top 16%)1997(Top 37%)
15K9.32 mi3.11 mi10273-4931961-2571961-25711304(Top 40%)2531(Top 21%)2531(Top 46%)
20K12.43 mi3.11 mi10591-3182146-1852146-18511633(Top 41%)2798(Top 23%)2798(Top 51%)
Half13.11 mi0.68 mi10611-202153-72153-711371(Top 40%)2616(Top 21%)2616(Top 48%)
25K15.53 mi2.42 mi10711-1002239-862239-8611483(Top 40%)2832(Top 23%)2832(Top 52%)
30K18.64 mi3.11 mi10789-782358-1192358-11911224(Top 40%)2895(Top 24%)2895(Top 53%)
20M20.00 mi1.36 mi10851-622433-752433-7511843(Top 42%)3361(Top 27%)3361(Top 61%)
21M21.00 mi1.00 mi10743+1082414+192414+199863(Top 35%)2547(Top 21%)2547(Top 47%)
35K21.75 mi0.75 mi10654+892387+272387+278735(Top 31%)2014(Top 16%)2014(Top 37%)
23M23.00 mi1.25 mi10578+762388-12388-110142(Top 36%)2809(Top 23%)2809(Top 51%)
24M24.00 mi1.00 mi10508+70238823889831(Top 35%)2719(Top 22%)2719(Top 50%)
40K24.85 mi0.85 mi10459+492394-62394-610160(Top 36%)3000(Top 25%)3000(Top 55%)
25.2M25.20 mi0.35 mi10471-122421-272421-2712035(Top 42%)3976(Top 33%)3976(Top 73%)
Finish26.22 mi1.02 mi104712456-352456-3511338(Top 40%)3624(Top 30%)3624(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

11304

Females

2531

F18-39

2531

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10369

Females

1997

F18-39

1997

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

11304

Females

2531

F18-39

2531

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11633

Females

2798

F18-39

2798

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

11371

Females

2616

F18-39

2616

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11483

Females

2832

F18-39

2832

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11224

Females

2895

F18-39

2895

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11843

Females

3361

F18-39

3361

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9863

Females

2547

F18-39

2547

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8735

Females

2014

F18-39

2014

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10142

Females

2809

F18-39

2809

23M→24M

23.0 - 24.0 mi

Top 35%
×6story building
+12ft-82ft

Overall

9831

Females

2719

F18-39

2719

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10160

Females

3000

F18-39

3000

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

12035

Females

3976

F18-39

3976

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11338

Females

3624

F18-39

3624

Passing Analysis

Category:
Athletes Passed
1418
Passed By
2627
Net Change
-1213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9258
5K → 10K81602-522#9258#9780
10K → 15K60551-493#9780#10273
15K → 20K89406-318#10273#10591
20K → Half2848-20#10591#10611
Half → 25K139239-100#10611#10711
25K → 30K216294-78#10711#10789
30K → 20M95157-62#10789#10851
20M → 21M15143+108#10851#10743
21M → 35K10718+89#10743#10654
35K → 23M13963+76#10654#10578
23M → 24M11242+70#10578#10508
24M → 40K9041+49#10508#10459
40K → 25.2M3648-12#10459#10471
25.2M → Finish75750#10471#10471
TOTALS14182627-1213
📊

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