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BOSTON MARATHON 2025

Rachel Dent

Bib: 18025 F US

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:53/mi
24:30
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:55/mi
49:06
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:57/mi
1:13:48
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:11/mi
1:39:14
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:04/mi
1:44:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:52/mi
2:06:14
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:51/mi
2:33:44
↑ 181↓ 1480.2%
138 ft elev
20M
8:54/mi
2:45:49
↑ 64↓ 500.2%
148 ft elev
21M
9:57/mi
2:55:46
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:37/mi
3:02:13
↑ 17↓ 861.7%
156 ft elev
23M
9:13/mi
3:13:46
↑ 23↓ 630.6%
116 ft elev
24M
9:08/mi
3:22:54
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:04/mi
3:30:39
↓ 200.3%
20 ft elev
25.2M
11:07/mi
3:34:29
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:26/mi
3:43:05
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:44:447:59 /mi⚡ faster
2nd Half
1:58:219:02 /mi+13.0%
Positive split — 13.0% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:3924:307:5324:30
7:53
-
10K
6.21 mi11:39:1549:067:5424:36
7:55
+0:02
15K
9.32 mi12:03:571:13:487:5524:42
7:57
+0:02
20K
12.43 mi12:29:231:39:147:5925:26
8:11
+0:14
Half
13.11 mi12:34:531:44:447:595:30
8:04
-0:07
25K
15.53 mi12:56:232:06:148:0821:30
8:52
+0:48
30K
18.64 mi13:23:532:33:448:1527:30
8:51
-0:01
20M
20.00 mi13:35:582:45:498:1712:05
8:54
+0:03
21M
21.00 mi13:45:552:55:468:229:57
9:57
+1:03
35K
21.75 mi13:52:223:02:138:236:27
8:37
-1:20
23M
23.00 mi14:03:553:13:468:2511:33
9:13
+0:36
24M
24.00 mi14:13:033:22:548:279:08
9:08
-0:05
40K
24.85 mi14:20:483:30:398:297:45
9:04
-0:04
25.2M
25.20 mi14:24:383:34:298:313:50
11:07
+2:03
Finish
26.22 mi14:33:143:43:058:318:36
8:26
-2:41

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

7:53 /mi

Average Pace

8:31 /mi

Slowest Pace

11:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:44

47% of race

Time at Steady Pace

1:44:34

47% of race

Time at Slower Pace

13:47

6% of race

Average Pace: 8:30 /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 mi11:14:3924:307:5324:30
7:53
#15571
10K
6.21 mi11:39:1549:067:5424:36
7:55
#15702
15K
9.32 mi12:03:571:13:487:5524:42
7:57
#15663
20K
12.43 mi12:29:231:39:147:5925:26
8:11
#15820
Half
13.11 mi12:34:531:44:447:595:30
8:04
#15853
25K
15.53 mi12:56:232:06:148:0821:30
8:52
#16497
30K
18.64 mi13:23:532:33:448:1527:30
8:51
#16510
20M
20.00 mi13:35:582:45:498:1712:05
8:54
#16449
21M
21.00 mi13:45:552:55:468:229:57
9:57
#16524
35K
21.75 mi13:52:223:02:138:236:27
8:37
#16483
23M
23.00 mi14:03:553:13:468:2511:33
9:13
#16504
24M
24.00 mi14:13:033:22:548:279:08
9:08
#16585
40K
24.85 mi14:20:483:30:398:297:45
9:04
#16579
25.2M
25.20 mi14:24:383:34:298:313:50
11:07
#16688
Finish
26.22 mi14:33:143:43:058:318:36
8:26
#16650
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi15571487848781568249614961
10K6.21 mi3.10 mi15702-1314962-844962-841582050255025
15K9.32 mi3.11 mi15663+394934+284934+281568249614961
20K12.43 mi3.11 mi15820-1575051-1175051-1171624353545354
Half13.11 mi0.68 mi15853-335064-135064-131643954445444
25K15.53 mi2.42 mi16497-6445458-3945458-3941927671287128
30K18.64 mi3.11 mi16510-135531-735531-731690859855985
20M20.00 mi1.36 mi16449+615528+35528+31620857275727
21M21.00 mi1.00 mi16524-755594-665594-661811668536853
35K21.75 mi0.75 mi16483+41559455941621559005900
23M23.00 mi1.25 mi16504-215636-425636-421744966876687
24M24.00 mi1.00 mi16585-815708-725708-721804270527052
40K24.85 mi0.85 mi16579+65734-265734-261670664246424
25.2M25.20 mi0.35 mi16688-1095817-835817-832099886428642
Finish26.22 mi1.02 mi16650+385818-15818-11585159405940

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15682

Females

4961

F18-39

4961

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15820

Females

5025

F18-39

5025

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15682

Females

4961

F18-39

4961

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16243

Females

5354

F18-39

5354

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16439

Females

5444

F18-39

5444

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19276

Females

7128

F18-39

7128

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

16908

Females

5985

F18-39

5985

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16208

Females

5727

F18-39

5727

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18116

Females

6853

F18-39

6853

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16215

Females

5900

F18-39

5900

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17449

Females

6687

F18-39

6687

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18042

Females

7052

F18-39

7052

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16706

Females

6424

F18-39

6424

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20998

Females

8642

F18-39

8642

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15851

Females

5940

F18-39

5940

Passing Analysis

Category:
Athletes Passed
1583
Passed By
2662
Net Change
-1079
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15571
5K → 10K261392-131#15571#15702
10K → 15K219180+39#15702#15663
15K → 20K154311-157#15663#15820
20K → Half2356-33#15820#15853
Half → 25K44688-644#15853#16497
25K → 30K225238-13#16497#16510
30K → 20M14483+61#16510#16449
20M → 21M86161-75#16449#16524
21M → 35K8039+41#16524#16483
35K → 23M112133-21#16483#16504
23M → 24M51132-81#16504#16585
24M → 40K7973+6#16585#16579
40K → 25.2M10119-109#16579#16688
25.2M → Finish9557+38#16688#16650
TOTALS15832662-1079

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing