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BOSTON MARATHON 2025

Brittany Desimone

PA

Bib: 17267 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Female)
#0 / 12228
Top 32%
Masters (Masters Women)
#0 / 6759
Top 17%
Division (F40-44)
#0 / 1718
Top 35%
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
7:45/mi
24:06
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:34/mi
47:38
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:34/mi
1:11:07
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:42/mi
1:35:01
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:37/mi
1:40:13
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:51/mi
1:59:14
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:11/mi
2:24:40
↑ 181↓ 1480.2%
138 ft elev
20M
8:24/mi
2:36:05
↑ 64↓ 500.2%
148 ft elev
21M
8:42/mi
2:44:47
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:03/mi
2:50:48
↑ 17↓ 861.7%
156 ft elev
23M
8:16/mi
3:01:09
↑ 23↓ 630.6%
116 ft elev
24M
8:17/mi
3:09:26
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:09/mi
3:18:07
↓ 200.3%
20 ft elev
25.2M
9:40/mi
3:21:27
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:28/mi
3:30:05
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:13
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:49:52
Pace8:23 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4524:067:4524:06
7:45
-
10K
6.21 mi11:40:1747:387:4023:32
7:34
-0:11
15K
9.32 mi12:03:461:11:077:3823:29
7:34
0:00
20K
12.43 mi12:27:401:35:017:3923:54
7:42
+0:08
Half
13.11 mi12:32:521:40:137:395:12
7:37
-0:05
25K
15.53 mi12:51:531:59:147:4119:01
7:51
+0:14
30K
18.64 mi13:17:192:24:407:4625:26
8:11
+0:20
20M
20.00 mi13:28:442:36:057:4811:25
8:24
+0:13
21M
21.00 mi13:37:262:44:477:518:42
8:42
+0:18
35K
21.75 mi13:43:272:50:487:516:01
8:03
-0:39
23M
23.00 mi13:53:483:01:097:5310:21
8:16
+0:13
24M
24.00 mi14:02:053:09:267:548:17
8:17
+0:01
40K
24.85 mi14:10:463:18:077:588:41
10:09
+1:52
25.2M
25.20 mi14:14:063:21:278:003:20
9:40
-0:29
Finish
26.22 mi14:22:443:30:058:018:38
8:28
-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

7:34 /mi

Average Pace

8:01 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:13

48% of race

Time at Steady Pace

1:29:09

42% of race

Time at Slower Pace

20:43

10% of race

Average Pace: 8:01 /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 mi11:16:4524:067:4524:06
7:45
#14452
10K
6.21 mi11:40:1747:387:4023:32
7:34
#13647
15K
9.32 mi12:03:461:11:077:3823:29
7:34
#13139
20K
12.43 mi12:27:401:35:017:3923:54
7:42
#12893
Half
13.11 mi12:32:521:40:137:395:12
7:37
#12870
25K
15.53 mi12:51:531:59:147:4119:01
7:51
#12805
30K
18.64 mi13:17:192:24:407:4625:26
8:11
#12749
20M
20.00 mi13:28:442:36:057:4811:25
8:24
#12771
21M
21.00 mi13:37:262:44:477:518:42
8:42
#12673
35K
21.75 mi13:43:272:50:487:516:01
8:03
#12650
23M
23.00 mi13:53:483:01:097:5310:21
8:16
#12573
24M
24.00 mi14:02:053:09:267:548:17
8:17
#12589
40K
24.85 mi14:10:463:18:077:588:41
10:09
#13056
25.2M
25.20 mi14:14:063:21:278:003:20
9:40
#13091
Finish
26.22 mi14:22:443:30:058:018:38
8:28
#13243
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi144524188418812265(Top 43%)3052(Top 25%)3052(Top 178%)
10K6.21 mi3.10 mi13647+8053733+4553733+45512812(Top 45%)3261(Top 27%)3261(Top 190%)
15K9.32 mi3.11 mi13139+5083475+2583475+25812265(Top 43%)3052(Top 25%)3052(Top 178%)
20K12.43 mi3.11 mi12893+2463385+903385+9012365(Top 44%)3207(Top 26%)3207(Top 187%)
Half13.11 mi0.68 mi12870+233380+53380+512846(Top 45%)3425(Top 28%)3425(Top 199%)
25K15.53 mi2.42 mi12805+653366+143366+1412717(Top 45%)3514(Top 29%)3514(Top 205%)
30K18.64 mi3.11 mi12749+563394-283394-2812738(Top 45%)3686(Top 30%)3686(Top 215%)
20M20.00 mi1.36 mi12771-223455-613455-6113176(Top 46%)4068(Top 33%)4068(Top 237%)
21M21.00 mi1.00 mi12673+983434+213434+2111707(Top 41%)3457(Top 28%)3457(Top 201%)
35K21.75 mi0.75 mi12650+233447-133447-1312572(Top 44%)3935(Top 32%)3935(Top 229%)
23M23.00 mi1.25 mi12573+773436+113436+1111853(Top 42%)3664(Top 30%)3664(Top 213%)
24M24.00 mi1.00 mi12589-163469-333469-3313155(Top 46%)4394(Top 36%)4394(Top 256%)
40K24.85 mi0.85 mi13056-4673763-2943763-29420952(Top 74%)8638(Top 71%)8638(Top 503%)
25.2M25.20 mi0.35 mi13091-353792-293792-2915455(Top 54%)5779(Top 47%)5779(Top 336%)
Finish26.22 mi1.02 mi13243-1523895-1033895-10316037(Top 56%)6032(Top 49%)6032(Top 351%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12265

Females

3052

F40-44

3052

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12812

Females

3261

F40-44

3261

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12265

Females

3052

F40-44

3052

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

12365

Females

3207

F40-44

3207

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12846

Females

3425

F40-44

3425

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12717

Females

3514

F40-44

3514

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12738

Females

3686

F40-44

3686

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13176

Females

4068

F40-44

4068

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

11707

Females

3457

F40-44

3457

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12572

Females

3935

F40-44

3935

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11853

Females

3664

F40-44

3664

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

13155

Females

4394

F40-44

4394

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

20952

Females

8638

F40-44

8638

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15455

Females

5779

F40-44

5779

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

16037

Females

6032

F40-44

6032

Passing Analysis

Category:
Athletes Passed
2838
Passed By
1629
Net Change
+1209
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14452
5K → 10K85449+805#14452#13647
10K → 15K53830+508#13647#13139
15K → 20K34195+246#13139#12893
20K → Half4219+23#12893#12870
Half → 25K178113+65#12870#12805
25K → 30K254198+56#12805#12749
30K → 20M117139-22#12749#12771
20M → 21M15658+98#12771#12673
21M → 35K7451+23#12673#12650
35K → 23M14871+77#12650#12573
23M → 24M7288-16#12573#12589
24M → 40K14481-467#12589#13056
40K → 25.2M1752-35#13056#13091
25.2M → Finish33185-152#13091#13243
TOTALS28381629+1209
📊

Passing Visuals

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