Boston Marathon logo
BOSTON MARATHON 2025

Sloane Sparks

Bib: 11003•F

TN

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 10%
Gender (Female)
#0 / 12228
Top 1%
Division (F18-39)
#0 / 5469
Top 3%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:29
Rank: #4556
Start → 5K
20:29 | 6:36/mi
10K· 6.21 mi
40:39
Rank: #4092 (+464)
5K → 10K
20:10 | 6:29/mi
15K· 9.32 mi
1:00:51
Rank: #3881 (+211)
10K → 15K
20:12 | 6:30/mi
20K· 12.43 mi
1:21:05
Rank: #3683 (+198)
15K → 20K
20:14 | 6:31/mi
Half· 13.11 mi
1:25:28
Rank: #3658 (+25)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:41:24
Rank: #3565 (+93)
Half → 25K
15:56 | 6:34/mi
30K· 18.64 mi
2:02:12
Rank: #3363 (+202)
25K → 30K
20:48 | 6:42/mi
20M
2:11:33
Rank: #3322 (+41)
30K → 20M
9:21 | 6:53/mi
21M
2:18:49
Rank: #3307 (+15)
20M → 21M
7:16 | 7:16/mi
35K· 21.75 mi
2:23:36
Rank: #3213 (+94)
21M → 35K
4:47 | 6:24/mi
23M
2:32:13
Rank: #3156 (+57)
35K → 23M
8:37 | 6:53/mi
24M
2:38:47
Rank: #3077 (+79)
23M → 24M
6:34 | 6:34/mi
40K· 24.85 mi
2:44:30
Rank: #3007 (+70)
24M → 40K
5:43 | 6:41/mi
25.2M
2:47:01
Rank: #2974 (+33)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:53:36
Rank: #2930 (+44)
25.2M → Finish
6:35 | 6:28/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
Time1:25:28
Pace6:31 /mi
2nd Half
Distance13.11 mi
Time1:28:08
Pace6:43 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3420:296:3620:29
6:36
-
10K
6.21 mi11:07:4440:396:3320:10
6:29
-0:07
15K
9.32 mi11:27:561:00:516:3220:12
6:30
+0:01
20K
12.43 mi11:48:101:21:056:3120:14
6:31
+0:01
Half
13.11 mi11:52:331:25:286:314:23
6:25
-0:06
25K
15.53 mi12:08:291:41:246:3215:56
6:34
+0:09
30K
18.64 mi12:29:172:02:126:3320:48
6:42
+0:08
20M
20.00 mi12:38:382:11:336:359:21
6:53
+0:11
21M
21.00 mi12:45:542:18:496:377:16
7:16
+0:23
35K
21.75 mi12:50:412:23:366:364:47
6:24
-0:52
23M
23.00 mi12:59:182:32:136:378:37
6:53
+0:29
24M
24.00 mi13:05:522:38:476:376:34
6:34
-0:19
40K
24.85 mi13:11:352:44:306:375:43
6:41
+0:07
25.2M
25.20 mi13:14:062:47:016:382:31
7:18
+0:37
Finish
26.22 mi13:20:412:53:366:386:35
6:28
-0:50

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

6:24 /mi

Average Pace

6:38 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:49

94% of race

Time at Steady Pace

9:47

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:47:3420:296:3620:29
6:36
#4556
10K
6.21 mi11:07:4440:396:3320:10
6:29
#4092
15K
9.32 mi11:27:561:00:516:3220:12
6:30
#3881
20K
12.43 mi11:48:101:21:056:3120:14
6:31
#3683
Half
13.11 mi11:52:331:25:286:314:23
6:25
#3658
25K
15.53 mi12:08:291:41:246:3215:56
6:34
#3565
30K
18.64 mi12:29:172:02:126:3320:48
6:42
#3363
20M
20.00 mi12:38:382:11:336:359:21
6:53
#3322
21M
21.00 mi12:45:542:18:496:377:16
7:16
#3307
35K
21.75 mi12:50:412:23:366:364:47
6:24
#3213
23M
23.00 mi12:59:182:32:136:378:37
6:53
#3156
24M
24.00 mi13:05:522:38:476:376:34
6:34
#3077
40K
24.85 mi13:11:352:44:306:375:43
6:41
#3007
25.2M
25.20 mi13:14:062:47:016:382:31
7:18
#2974
Finish
26.22 mi13:20:412:53:366:386:35
6:28
#2930
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi45562682683596(Top 13%)189(Top 2%)189(Top 3%)
10K6.21 mi3.10 mi4092+464227+41227+413679(Top 13%)198(Top 2%)198(Top 4%)
15K9.32 mi3.11 mi3881+211213+14213+143596(Top 13%)189(Top 2%)189(Top 3%)
20K12.43 mi3.11 mi3683+198194+19194+193217(Top 11%)160(Top 1%)160(Top 3%)
Half13.11 mi0.68 mi3658+25192+2192+23294(Top 12%)157(Top 1%)157(Top 3%)
25K15.53 mi2.42 mi3565+93184+8184+83303(Top 12%)170(Top 1%)170(Top 3%)
30K18.64 mi3.11 mi3363+202172+12172+122874(Top 10%)151(Top 1%)151(Top 3%)
20M20.00 mi1.36 mi3322+411721723420(Top 12%)245(Top 2%)245(Top 4%)
21M21.00 mi1.00 mi3307+15171+1171+13494(Top 12%)280(Top 2%)280(Top 5%)
35K21.75 mi0.75 mi3213+94170+1170+12043(Top 7%)122(Top 1.0%)122(Top 2%)
23M23.00 mi1.25 mi3156+57167+3167+33146(Top 11%)263(Top 2%)263(Top 5%)
24M24.00 mi1.00 mi3077+79163+4163+42374(Top 8%)169(Top 1%)169(Top 3%)
40K24.85 mi0.85 mi3007+70160+3160+32337(Top 8%)189(Top 2%)189(Top 3%)
25.2M25.20 mi0.35 mi2974+33158+2158+22603(Top 9%)265(Top 2%)265(Top 5%)
Finish26.22 mi1.02 mi2930+44156+2156+22653(Top 9%)243(Top 2%)243(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3596

Females

189

F18-39

189

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3679

Females

198

F18-39

198

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3596

Females

189

F18-39

189

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

3217

Females

160

F18-39

160

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3294

Females

157

F18-39

157

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3303

Females

170

F18-39

170

25K→30K

15.5 - 18.6 mi

Top 10%
×9stories
+181ft-148ft

Overall

2874

Females

151

F18-39

151

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3420

Females

245

F18-39

245

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3494

Females

280

F18-39

280

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

2043

Females

122

F18-39

122

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3146

Females

263

F18-39

263

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2374

Females

169

F18-39

169

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2337

Females

189

F18-39

189

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2603

Females

265

F18-39

265

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2653

Females

243

F18-39

243

Passing Analysis

Category:
Athletes Passed
1888
Passed By
262
Net Change
+1626
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4556
5K → 10K49127+464#4556#4092
10K → 15K23019+211#4092#3881
15K → 20K21113+198#3881#3683
20K → Half3510+25#3683#3658
Half → 25K11320+93#3658#3565
25K → 30K22321+202#3565#3363
30K → 20M8241+41#3363#3322
20M → 21M5843+15#3322#3307
21M → 35K962+94#3307#3213
35K → 23M8528+57#3213#3156
23M → 24M8910+79#3156#3077
24M → 40K777+70#3077#3007
40K → 25.2M374+33#3007#2974
25.2M → Finish6117+44#2974#2930
TOTALS1888262+1626
📊

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