Boston Marathon logo
BOSTON MARATHON 2025

Susana Lee

Bib: 24304•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
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
9:32/mi
29:36
↑ 97↓ 3451.5%
10K· 6.21 mi
9:49/mi
1:00:07
↑ 79↓ 1380.4%
15K· 9.32 mi
9:54/mi
1:30:51
↑ 67↓ 78
20K· 12.43 mi
10:33/mi
2:03:39
↑ 106↓ 860.1%
Half· 13.11 mi
10:24/mi
2:10:45
↑ 19↓ 370.5%
25K· 15.53 mi
11:32/mi
2:38:43
↑ 66↓ 880.2%
30K· 18.64 mi
12:19/mi
3:16:59
↑ 181↓ 1480.2%
20M
11:22/mi
3:32:26
↑ 64↓ 500.2%
21M
13:28/mi
3:45:54
↑ 106↓ 241.6%
35K· 21.75 mi
10:55/mi
3:54:04
↑ 17↓ 861.7%
23M
12:00/mi
4:09:05
↑ 23↓ 630.6%
24M
11:42/mi
4:20:47
↓ 821.3%
40K· 24.85 mi
12:07/mi
4:31:09
↓ 200.3%
25.2M
12:46/mi
4:35:33
↑ 13↓ 160.2%
Finish· 26.22 mi
11:07/mi
4:46:53
↑ 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 HalfFaster
Distance13.11 mi
Time2:10:45
Pace9:58 /mi
2nd Half
Distance13.11 mi
Time2:36:08
Pace11:55 /mi
📊Positive Split: 19.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:27:5329:369:3229:36
9:32
-
10K
6.21 mi11:58:241:00:079:4030:31
9:49
+0:17
15K
9.32 mi12:29:081:30:519:4530:44
9:54
+0:05
20K
12.43 mi13:01:562:03:399:5732:48
10:33
+0:39
Half
13.11 mi13:09:022:10:459:587:06
10:24
-0:09
25K
15.53 mi13:37:002:38:4310:1327:58
11:32
+1:08
30K
18.64 mi14:15:163:16:5910:3438:16
12:19
+0:47
20M
20.00 mi14:30:433:32:2610:3715:27
11:22
-0:57
21M
21.00 mi14:44:113:45:5410:4513:28
13:28
+2:06
35K
21.75 mi14:52:213:54:0410:468:10
10:55
-2:33
23M
23.00 mi15:07:224:09:0510:5015:01
12:00
+1:05
24M
24.00 mi15:19:044:20:4710:5211:42
11:42
-0:18
40K
24.85 mi15:29:264:31:0910:5510:22
12:07
+0:25
25.2M
25.20 mi15:33:504:35:3310:564:24
12:46
+0:39
Finish
26.22 mi15:45:104:46:5310:5711:20
11:07
-1:39

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

9:32 /mi

Average Pace

10:57 /mi

Slowest Pace

13:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:45

46% of race

Time at Steady Pace

1:14:37

26% of race

Time at Slower Pace

1:21:31

28% of race

Average Pace: 10:56 /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 mi11:27:5329:369:3229:36
9:32
#24324
10K
6.21 mi11:58:241:00:079:4030:31
9:49
#24670
15K
9.32 mi12:29:081:30:519:4530:44
9:54
#24694
20K
12.43 mi13:01:562:03:399:5732:48
10:33
#24885
Half
13.11 mi13:09:022:10:459:587:06
10:24
#24935
25K
15.53 mi13:37:002:38:4310:1327:58
11:32
#25158
30K
18.64 mi14:15:163:16:5910:3438:16
12:19
#25357
20M
20.00 mi14:30:433:32:2610:3715:27
11:22
#25280
21M
21.00 mi14:44:113:45:5410:4513:28
13:28
#25318
35K
21.75 mi14:52:213:54:0410:468:10
10:55
#25283
23M
23.00 mi15:07:224:09:0510:5015:01
12:00
#25279
24M
24.00 mi15:19:044:20:4710:5211:42
11:42
#25277
40K
24.85 mi15:29:264:31:0910:5510:22
12:07
#25279
25.2M
25.20 mi15:33:504:35:3310:564:24
12:46
#25266
Finish
26.22 mi15:45:104:46:5310:5711:20
11:07
#25289
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi243249865986524750(Top 87%)10085(Top 82%)10085(Top 1015%)
10K6.21 mi3.10 mi24670-34610046-18110046-18124902(Top 88%)10182(Top 83%)10182(Top 1024%)
15K9.32 mi3.11 mi24694-2410058-1210058-1224750(Top 87%)10085(Top 82%)10085(Top 1015%)
20K12.43 mi3.11 mi24885-19110171-11310171-11325283(Top 89%)10421(Top 85%)10421(Top 1048%)
Half13.11 mi0.68 mi24935-5010204-3310204-3325614(Top 90%)10608(Top 87%)10608(Top 1067%)
25K15.53 mi2.42 mi25158-22310343-13910343-13925900(Top 91%)10806(Top 88%)10806(Top 1087%)
30K18.64 mi3.11 mi25357-19910481-13810481-13825953(Top 91%)10917(Top 89%)10917(Top 1098%)
20M20.00 mi1.36 mi25280+7710457+2410457+2424295(Top 86%)10114(Top 83%)10114(Top 1018%)
21M21.00 mi1.00 mi25318-3810483-2610483-2625625(Top 90%)10869(Top 89%)10869(Top 1093%)
35K21.75 mi0.75 mi25283+3510474+910474+924014(Top 85%)10071(Top 82%)10071(Top 1013%)
23M23.00 mi1.25 mi25279+410480-610480-625099(Top 88%)10656(Top 87%)10656(Top 1072%)
24M24.00 mi1.00 mi25277+210496-1610496-1625231(Top 89%)10741(Top 88%)10741(Top 1081%)
40K24.85 mi0.85 mi25279-210505-910505-925099(Top 88%)10722(Top 88%)10722(Top 1079%)
25.2M25.20 mi0.35 mi25266+1310497+810497+824621(Top 87%)10482(Top 86%)10482(Top 1055%)
Finish26.22 mi1.02 mi25289-2310513-1610513-1625578(Top 90%)10944(Top 89%)10944(Top 1101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24750

Females

10085

F55-59

10085

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

24902

Females

10182

F55-59

10182

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24750

Females

10085

F55-59

10085

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

25283

Females

10421

F55-59

10421

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

25614

Females

10608

F55-59

10608

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

25900

Females

10806

F55-59

10806

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25953

Females

10917

F55-59

10917

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

24295

Females

10114

F55-59

10114

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25625

Females

10869

F55-59

10869

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

24014

Females

10071

F55-59

10071

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

25099

Females

10656

F55-59

10656

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

25231

Females

10741

F55-59

10741

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

25099

Females

10722

F55-59

10722

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24621

Females

10482

F55-59

10482

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2story building
+22ft-21ft

Overall

25578

Females

10944

F55-59

10944

Passing Analysis

Category:
Athletes Passed
758
Passed By
1723
Net Change
-965
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24324
5K → 10K103449-346#24324#24670
10K → 15K133157-24#24670#24694
15K → 20K82273-191#24694#24885
20K → Half1868-50#24885#24935
Half → 25K45268-223#24935#25158
25K → 30K59258-199#25158#25357
30K → 20M9619+77#25357#25280
20M → 21M2967-38#25280#25318
21M → 35K4611+35#25318#25283
35K → 23M4036+4#25283#25279
23M → 24M4341+2#25279#25277
24M → 40K2628-2#25277#25279
40K → 25.2M207+13#25279#25266
25.2M → Finish1841-23#25266#25289
TOTALS7581723-965
📊

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