Boston Marathon logo
BOSTON MARATHON 2025

Brooke Sessions

Bib: 19521•F

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 44%
Division (F18-39)
#0 / 5469
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
7:50/mi
24:21
↑ 97↓ 3451.5%
10K· 6.21 mi
8:07/mi
49:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:16/mi
1:15:15
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:41:18
↑ 106↓ 860.1%
Half· 13.11 mi
8:24/mi
1:47:02
↑ 19↓ 370.5%
25K· 15.53 mi
8:27/mi
2:07:31
↑ 66↓ 880.2%
30K· 18.64 mi
8:48/mi
2:34:51
↑ 181↓ 1480.2%
20M
9:02/mi
2:47:08
↑ 64↓ 500.2%
21M
9:23/mi
2:56:31
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:03:02
↑ 17↓ 861.7%
23M
8:44/mi
3:13:58
↑ 23↓ 630.6%
24M
8:16/mi
3:22:14
↓ 821.3%
40K· 24.85 mi
8:14/mi
3:29:16
↓ 200.3%
25.2M
8:48/mi
3:32:18
↑ 13↓ 160.2%
Finish· 26.22 mi
7:31/mi
3:39:58
↑ 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
Time1:47:02
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time1:52:56
Pace8:37 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5024:217:5024:21
7:50
-
10K
6.21 mi11:41:0249:337:5825:12
8:07
+0:17
15K
9.32 mi12:06:441:15:158:0425:42
8:16
+0:09
20K
12.43 mi12:32:471:41:188:0926:03
8:23
+0:07
Half
13.11 mi12:38:311:47:028:105:44
8:24
+0:01
25K
15.53 mi12:59:002:07:318:1320:29
8:27
+0:03
30K
18.64 mi13:26:202:34:518:1827:20
8:48
+0:21
20M
20.00 mi13:38:372:47:088:2112:17
9:02
+0:14
21M
21.00 mi13:48:002:56:318:249:23
9:23
+0:21
35K
21.75 mi13:54:313:03:028:256:31
8:43
-0:40
23M
23.00 mi14:05:273:13:588:2610:56
8:44
+0:01
24M
24.00 mi14:13:433:22:148:268:16
8:16
-0:28
40K
24.85 mi14:20:453:29:168:257:02
8:14
-0:02
25.2M
25.20 mi14:23:473:32:188:253:02
8:48
+0:34
Finish
26.22 mi14:31:273:39:588:247:40
7:31
-1:17

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

7:31 /mi

Average Pace

8:24 /mi

Slowest Pace

9:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

57:13

26% of race

Time at Steady Pace

1:33:16

42% of race

Time at Slower Pace

1:09:29

32% of race

Average Pace: 8:23 /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 mi11:15:5024:217:5024:21
7:50
#15169
10K
6.21 mi11:41:0249:337:5825:12
8:07
#16304
15K
9.32 mi12:06:441:15:158:0425:42
8:16
#16883
20K
12.43 mi12:32:471:41:188:0926:03
8:23
#17048
Half
13.11 mi12:38:311:47:028:105:44
8:24
#17092
25K
15.53 mi12:59:002:07:318:1320:29
8:27
#17013
30K
18.64 mi13:26:202:34:518:1827:20
8:48
#16874
20M
20.00 mi13:38:372:47:088:2112:17
9:02
#16863
21M
21.00 mi13:48:002:56:318:249:23
9:23
#16742
35K
21.75 mi13:54:313:03:028:256:31
8:43
#16725
23M
23.00 mi14:05:273:13:588:2610:56
8:44
#16558
24M
24.00 mi14:13:433:22:148:268:16
8:16
#16388
40K
24.85 mi14:20:453:29:168:257:02
8:14
#16207
25.2M
25.20 mi14:23:473:32:188:253:02
8:48
#16103
Finish
26.22 mi14:31:273:39:588:247:40
7:31
#15861
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi151694639463917859(Top 63%)6232(Top 51%)6232(Top 114%)
10K6.21 mi3.10 mi16304-11355326-6875326-68717288(Top 61%)5873(Top 48%)5873(Top 107%)
15K9.32 mi3.11 mi16883-5795652-3265652-32617859(Top 63%)6232(Top 51%)6232(Top 114%)
20K12.43 mi3.11 mi17048-1655771-1195771-11917466(Top 61%)6034(Top 49%)6034(Top 110%)
Half13.11 mi0.68 mi17092-445804-335804-3318617(Top 66%)6676(Top 55%)6676(Top 122%)
25K15.53 mi2.42 mi17013+795770+345770+3416862(Top 59%)5773(Top 47%)5773(Top 106%)
30K18.64 mi3.11 mi16874+1395741+295741+2916601(Top 58%)5804(Top 47%)5804(Top 106%)
20M20.00 mi1.36 mi16863+115757-165757-1617016(Top 60%)6138(Top 50%)6138(Top 112%)
21M21.00 mi1.00 mi16742+1215725+325725+3215559(Top 55%)5484(Top 45%)5484(Top 100%)
35K21.75 mi0.75 mi16725+175727-25727-216766(Top 59%)6190(Top 51%)6190(Top 113%)
23M23.00 mi1.25 mi16558+1675670+575670+5714749(Top 52%)5199(Top 43%)5199(Top 95%)
24M24.00 mi1.00 mi16388+1705601+695601+6913080(Top 46%)4371(Top 36%)4371(Top 80%)
40K24.85 mi0.85 mi16207+1815518+835518+8311774(Top 41%)3809(Top 31%)3809(Top 70%)
25.2M25.20 mi0.35 mi16103+1045467+515467+5110739(Top 38%)3395(Top 28%)3395(Top 62%)
Finish26.22 mi1.02 mi15861+2425366+1015366+1019413(Top 33%)2741(Top 22%)2741(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17859

Females

6232

F18-39

6232

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17288

Females

5873

F18-39

5873

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17859

Females

6232

F18-39

6232

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17466

Females

6034

F18-39

6034

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18617

Females

6676

F18-39

6676

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16862

Females

5773

F18-39

5773

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16601

Females

5804

F18-39

5804

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

17016

Females

6138

F18-39

6138

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

15559

Females

5484

F18-39

5484

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16766

Females

6190

F18-39

6190

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

14749

Females

5199

F18-39

5199

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13080

Females

4371

F18-39

4371

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11774

Females

3809

F18-39

3809

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10739

Females

3395

F18-39

3395

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

9413

Females

2741

F18-39

2741

Passing Analysis

Category:
Athletes Passed
2033
Passed By
2725
Net Change
-692
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15169
5K → 10K561191-1135#15169#16304
10K → 15K81660-579#16304#16883
15K → 20K144309-165#16883#17048
20K → Half1761-44#17048#17092
Half → 25K194115+79#17092#17013
25K → 30K281142+139#17013#16874
30K → 20M10695+11#16874#16863
20M → 21M16948+121#16863#16742
21M → 35K6649+17#16742#16725
35K → 23M19629+167#16725#16558
23M → 24M18414+170#16558#16388
24M → 40K1887+181#16388#16207
40K → 25.2M1062+104#16207#16103
25.2M → Finish2453+242#16103#15861
TOTALS20332725-692
📊

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