Boston Marathon logo
BOSTON MARATHON 2025

Steph Santiago

Bib: 18838•F

BC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 40%
Division (F40-44)
#0 / 1718
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
8:24/mi
26:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
52:14
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:18:15
↑ 67↓ 78
20K· 12.43 mi
8:42/mi
1:45:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:42/mi
1:51:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:12:50
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:41:04
↑ 181↓ 1480.2%
20M
8:48/mi
2:53:01
↑ 64↓ 500.2%
21M
9:10/mi
3:02:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
3:08:26
↑ 17↓ 861.7%
23M
8:23/mi
3:18:56
↑ 23↓ 630.6%
24M
8:14/mi
3:27:10
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:34:16
↓ 200.3%
25.2M
9:14/mi
3:37:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:02/mi
3:45:38
↑ 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
Time1:51:12
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:54:26
Pace8:44 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0026:078:2426:07
8:24
-
10K
6.21 mi11:44:0752:148:2426:07
8:24
0:00
15K
9.32 mi12:10:081:18:158:2426:01
8:22
-0:02
20K
12.43 mi12:37:091:45:168:2827:01
8:42
+0:20
Half
13.11 mi12:43:051:51:128:295:56
8:42
0:00
25K
15.53 mi13:04:432:12:508:3321:38
8:55
+0:13
30K
18.64 mi13:32:572:41:048:3828:14
9:05
+0:10
20M
20.00 mi13:44:542:53:018:3911:57
8:48
-0:17
21M
21.00 mi13:54:043:02:118:419:10
9:10
+0:22
35K
21.75 mi14:00:193:08:268:406:15
8:21
-0:49
23M
23.00 mi14:10:493:18:568:3910:30
8:23
+0:02
24M
24.00 mi14:19:033:27:108:388:14
8:14
-0:09
40K
24.85 mi14:26:093:34:168:377:06
8:18
+0:04
25.2M
25.20 mi14:29:203:37:278:383:11
9:14
+0:56
Finish
26.22 mi14:37:313:45:388:378:11
8:02
-1:12

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

8:02 /mi

Average Pace

8:37 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:25

72% of race

Time at Steady Pace

1:02:13

28% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:36 /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 mi11:18:0026:078:2426:07
8:24
#19349
10K
6.21 mi11:44:0752:148:2426:07
8:24
#19277
15K
9.32 mi12:10:081:18:158:2426:01
8:22
#18995
20K
12.43 mi12:37:091:45:168:2827:01
8:42
#19082
Half
13.11 mi12:43:051:51:128:295:56
8:42
#19143
25K
15.53 mi13:04:432:12:508:3321:38
8:55
#19205
30K
18.64 mi13:32:572:41:048:3828:14
9:05
#18988
20M
20.00 mi13:44:542:53:018:3911:57
8:48
#18724
21M
21.00 mi13:54:043:02:118:419:10
9:10
#18457
35K
21.75 mi14:00:193:08:268:406:15
8:21
#18317
23M
23.00 mi14:10:493:18:568:3910:30
8:23
#17971
24M
24.00 mi14:19:033:27:108:388:14
8:14
#17713
40K
24.85 mi14:26:093:34:168:377:06
8:18
#17524
25.2M
25.20 mi14:29:203:37:278:383:11
9:14
#17465
Finish
26.22 mi14:37:313:45:388:378:11
8:02
#17300
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi193497109710918546(Top 65%)6629(Top 54%)6629(Top 386%)
10K6.21 mi3.10 mi19277+727053+567053+5619236(Top 68%)7019(Top 57%)7019(Top 409%)
15K9.32 mi3.11 mi18995+2826908+1456908+14518546(Top 65%)6629(Top 54%)6629(Top 386%)
20K12.43 mi3.11 mi19082-876949-416949-4119393(Top 68%)7129(Top 58%)7129(Top 415%)
Half13.11 mi0.68 mi19143-616986-376986-3720353(Top 72%)7654(Top 63%)7654(Top 446%)
25K15.53 mi2.42 mi19205-627030-447030-4419529(Top 69%)7272(Top 59%)7272(Top 423%)
30K18.64 mi3.11 mi18988+2176941+896941+8918133(Top 64%)6651(Top 54%)6651(Top 387%)
20M20.00 mi1.36 mi18724+2646816+1256816+12515655(Top 55%)5399(Top 44%)5399(Top 314%)
21M21.00 mi1.00 mi18457+2676698+1186698+11814474(Top 51%)4886(Top 40%)4886(Top 284%)
35K21.75 mi0.75 mi18317+1406634+646634+6414664(Top 52%)5067(Top 41%)5067(Top 295%)
23M23.00 mi1.25 mi17971+3466481+1536481+15312630(Top 44%)4079(Top 33%)4079(Top 237%)
24M24.00 mi1.00 mi17713+2586370+1116370+11112854(Top 45%)4254(Top 35%)4254(Top 248%)
40K24.85 mi0.85 mi17524+1896293+776293+7712237(Top 43%)4059(Top 33%)4059(Top 236%)
25.2M25.20 mi0.35 mi17465+596267+266267+2613208(Top 47%)4627(Top 38%)4627(Top 269%)
Finish26.22 mi1.02 mi17300+1656189+786189+7813139(Top 46%)4527(Top 37%)4527(Top 264%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18546

Females

6629

F40-44

6629

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

19236

Females

7019

F40-44

7019

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18546

Females

6629

F40-44

6629

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

19393

Females

7129

F40-44

7129

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20353

Females

7654

F40-44

7654

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

19529

Females

7272

F40-44

7272

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18133

Females

6651

F40-44

6651

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15655

Females

5399

F40-44

5399

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14474

Females

4886

F40-44

4886

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14664

Females

5067

F40-44

5067

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12630

Females

4079

F40-44

4079

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

12854

Females

4254

F40-44

4254

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12237

Females

4059

F40-44

4059

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13208

Females

4627

F40-44

4627

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2story building
+22ft-21ft

Overall

13139

Females

4527

F40-44

4527

Passing Analysis

Category:
Athletes Passed
3056
Passed By
1007
Net Change
+2049
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19349
5K → 10K292220+72#19349#19277
10K → 15K36381+282#19277#18995
15K → 20K172259-87#18995#19082
20K → Half1879-61#19082#19143
Half → 25K154216-62#19143#19205
25K → 30K323106+217#19205#18988
30K → 20M27612+264#18988#18724
20M → 21M2769+267#18724#18457
21M → 35K1433+140#18457#18317
35K → 23M3515+346#18317#17971
23M → 24M2591+258#17971#17713
24M → 40K1967+189#17713#17524
40K → 25.2M590+59#17524#17465
25.2M → Finish1749+165#17465#17300
TOTALS30561007+2049
📊

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