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BOSTON MARATHON 2025

Heidi Daulton

CA

Bib: 15371 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
7:49/mi
24:17
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:01/mi
49:10
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:13/mi
1:14:42
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:00/mi
1:42:40
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:18/mi
1:48:20
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:15/mi
2:10:45
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:44/mi
2:40:58
↑ 181↓ 1480.2%
138 ft elev
20M
9:53/mi
2:54:24
↑ 64↓ 500.2%
148 ft elev
21M
10:30/mi
3:04:54
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:27/mi
3:11:13
↑ 17↓ 861.7%
156 ft elev
23M
9:19/mi
3:22:53
↑ 23↓ 630.6%
116 ft elev
24M
9:07/mi
3:32:00
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:07/mi
3:39:48
↓ 200.3%
20 ft elev
25.2M
11:30/mi
3:43:46
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:43/mi
3:52:39
↑ 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
Time1:48:20
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time2:04:19
Pace9:29 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3924:177:4924:17
7:49
-
10K
6.21 mi11:20:3249:107:5524:53
8:01
+0:12
15K
9.32 mi11:46:041:14:428:0125:32
8:13
+0:12
20K
12.43 mi12:14:021:42:408:1627:58
9:00
+0:47
Half
13.11 mi12:19:421:48:208:165:40
8:18
-0:42
25K
15.53 mi12:42:072:10:458:2522:25
9:15
+0:57
30K
18.64 mi13:12:202:40:588:3830:13
9:44
+0:29
20M
20.00 mi13:25:462:54:248:4313:26
9:53
+0:09
21M
21.00 mi13:36:163:04:548:4810:30
10:30
+0:37
35K
21.75 mi13:42:353:11:138:486:19
8:27
-2:03
23M
23.00 mi13:54:153:22:538:4911:40
9:19
+0:52
24M
24.00 mi14:03:223:32:008:509:07
9:07
-0:12
40K
24.85 mi14:11:103:39:488:517:48
9:07
0:00
25.2M
25.20 mi14:15:083:43:468:533:58
11:30
+2:23
Finish
26.22 mi14:24:013:52:398:538:53
8:43
-2:47

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

7:49 /mi

Average Pace

8:53 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:41

37% of race

Time at Steady Pace

1:27:51

38% of race

Time at Slower Pace

58:07

25% of race

Average Pace: 8:52 /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 mi10:55:3924:177:4924:17
7:49
#14979
10K
6.21 mi11:20:3249:107:5524:53
8:01
#15815
15K
9.32 mi11:46:041:14:428:0125:32
8:13
#16448
20K
12.43 mi12:14:021:42:408:1627:58
9:00
#17770
Half
13.11 mi12:19:421:48:208:165:40
8:18
#17768
25K
15.53 mi12:42:072:10:458:2522:25
9:15
#18383
30K
18.64 mi13:12:202:40:588:3830:13
9:44
#18953
20M
20.00 mi13:25:462:54:248:4313:26
9:53
#19125
21M
21.00 mi13:36:163:04:548:4810:30
10:30
#19209
35K
21.75 mi13:42:353:11:138:486:19
8:27
#19066
23M
23.00 mi13:54:153:22:538:4911:40
9:19
#18990
24M
24.00 mi14:03:223:32:008:509:07
9:07
#18953
40K
24.85 mi14:11:103:39:488:517:48
9:07
#18861
25.2M
25.20 mi14:15:083:43:468:533:58
11:30
#18936
Finish
26.22 mi14:24:013:52:398:538:53
8:43
#18883
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi149794520452017528(Top 62%)6036(Top 49%)6036(Top 110%)
10K6.21 mi3.10 mi15815-8365030-5105030-51016569(Top 58%)5465(Top 45%)5465(Top 100%)
15K9.32 mi3.11 mi16448-6335407-3775407-37717528(Top 62%)6036(Top 49%)6036(Top 110%)
20K12.43 mi3.11 mi17770-13226206-7996206-79920977(Top 74%)8040(Top 66%)8040(Top 147%)
Half13.11 mi0.68 mi17768+26209-36209-318024(Top 63%)6341(Top 52%)6341(Top 116%)
25K15.53 mi2.42 mi18383-6156569-3606569-36020958(Top 74%)8076(Top 66%)8076(Top 148%)
30K18.64 mi3.11 mi18953-5706918-3496918-34920761(Top 73%)8093(Top 66%)8093(Top 148%)
20M20.00 mi1.36 mi19125-1727050-1327050-13220574(Top 72%)8118(Top 66%)8118(Top 148%)
21M21.00 mi1.00 mi19209-847118-687118-6820025(Top 71%)7922(Top 65%)7922(Top 145%)
35K21.75 mi0.75 mi19066+1437058+607058+6015193(Top 53%)5355(Top 44%)5355(Top 98%)
23M23.00 mi1.25 mi18990+767043+157043+1517871(Top 63%)6928(Top 57%)6928(Top 127%)
24M24.00 mi1.00 mi18953+377047-47047-417985(Top 63%)7032(Top 58%)7032(Top 129%)
40K24.85 mi0.85 mi18861+927026+217026+2117013(Top 60%)6596(Top 54%)6596(Top 121%)
25.2M25.20 mi0.35 mi18936-757072-467072-4622066(Top 78%)9176(Top 75%)9176(Top 168%)
Finish26.22 mi1.02 mi18883+537065+77065+717614(Top 62%)6882(Top 56%)6882(Top 126%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17528

Females

6036

F18-39

6036

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16569

Females

5465

F18-39

5465

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17528

Females

6036

F18-39

6036

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

20977

Females

8040

F18-39

8040

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

18024

Females

6341

F18-39

6341

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

20958

Females

8076

F18-39

8076

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20761

Females

8093

F18-39

8093

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

20574

Females

8118

F18-39

8118

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

20025

Females

7922

F18-39

7922

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

15193

Females

5355

F18-39

5355

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17871

Females

6928

F18-39

6928

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

17985

Females

7032

F18-39

7032

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17013

Females

6596

F18-39

6596

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22066

Females

9176

F18-39

9176

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

17614

Females

6882

F18-39

6882

Passing Analysis

Category:
Athletes Passed
1067
Passed By
4971
Net Change
-3904
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14979
5K → 10K86922-836#14979#15815
10K → 15K66699-633#15815#16448
15K → 20K271349-1322#16448#17770
20K → Half3230+2#17770#17768
Half → 25K45660-615#17768#18383
25K → 30K98668-570#18383#18953
30K → 20M62234-172#18953#19125
20M → 21M73157-84#19125#19209
21M → 35K15310+143#19209#19066
35K → 23M12852+76#19066#18990
23M → 24M8447+37#18990#18953
24M → 40K11220+92#18953#18861
40K → 25.2M1489-75#18861#18936
25.2M → Finish8734+53#18936#18883
TOTALS10674971-3904
📊

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