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BOSTON MARATHON 2025

Heidi Nadeau

Bib: 4581•F

AZ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Female)
#0 / 12228
Top 0.9%
Division (F18-39)
#0 / 5469
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:48
Rank: #2935
Start → 5K
19:48 | 6:22/mi
10K· 6.21 mi
39:40
Rank: #2946 (-11)
5K → 10K
19:52 | 6:24/mi
15K· 9.32 mi
59:41
Rank: #3030 (-84)
10K → 15K
20:01 | 6:27/mi
20K· 12.43 mi
1:20:29
Rank: #3339 (-309)
15K → 20K
20:48 | 6:42/mi
Half· 13.11 mi
1:24:52
Rank: #3330 (+9)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:40:37
Rank: #3236 (+94)
Half → 25K
15:45 | 6:30/mi
30K· 18.64 mi
2:01:15
Rank: #3077 (+159)
25K → 30K
20:38 | 6:38/mi
20M
2:10:17
Rank: #2958 (+119)
30K → 20M
9:02 | 6:39/mi
21M
2:17:13
Rank: #2868 (+90)
20M → 21M
6:56 | 6:56/mi
35K· 21.75 mi
2:21:52
Rank: #2778 (+90)
21M → 35K
4:39 | 6:13/mi
23M
2:30:01
Rank: #2646 (+132)
35K → 23M
8:09 | 6:31/mi
24M
2:36:25
Rank: #2562 (+84)
23M → 24M
6:24 | 6:24/mi
40K· 24.85 mi
2:41:50
Rank: #2469 (+93)
24M → 40K
5:25 | 6:20/mi
25.2M
2:44:12
Rank: #2427 (+42)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:50:23
Rank: #2335 (+92)
25.2M → Finish
6:11 | 6:04/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:24:52
Pace6:28 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:25:31
Pace6:31 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1119:486:2219:48
6:22
-
10K
6.21 mi10:43:0339:406:2319:52
6:24
+0:02
15K
9.32 mi11:03:0459:416:2420:01
6:27
+0:03
20K
12.43 mi11:23:521:20:296:2920:48
6:42
+0:15
Half
13.11 mi11:28:151:24:526:284:23
6:25
-0:17
25K
15.53 mi11:44:001:40:376:2915:45
6:30
+0:05
30K
18.64 mi12:04:382:01:156:3020:38
6:38
+0:08
20M
20.00 mi12:13:402:10:176:319:02
6:39
+0:01
21M
21.00 mi12:20:362:17:136:326:56
6:56
+0:17
35K
21.75 mi12:25:152:21:526:314:39
6:13
-0:43
23M
23.00 mi12:33:242:30:016:318:09
6:31
+0:18
24M
24.00 mi12:39:482:36:256:316:24
6:24
-0:07
40K
24.85 mi12:45:132:41:506:315:25
6:20
-0:04
25.2M
25.20 mi12:47:352:44:126:312:22
6:52
+0:32
Finish
26.22 mi12:53:462:50:236:306:11
6:04
-0:48

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

6:04 /mi

Average Pace

6:30 /mi

Slowest Pace

6:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:17

82% of race

Time at Steady Pace

30:06

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:30 /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 mi10:23:1119:486:2219:48
6:22
#2935
10K
6.21 mi10:43:0339:406:2319:52
6:24
#2946
15K
9.32 mi11:03:0459:416:2420:01
6:27
#3030
20K
12.43 mi11:23:521:20:296:2920:48
6:42
#3339
Half
13.11 mi11:28:151:24:526:284:23
6:25
#3330
25K
15.53 mi11:44:001:40:376:2915:45
6:30
#3236
30K
18.64 mi12:04:382:01:156:3020:38
6:38
#3077
20M
20.00 mi12:13:402:10:176:319:02
6:39
#2958
21M
21.00 mi12:20:362:17:136:326:56
6:56
#2868
35K
21.75 mi12:25:152:21:526:314:39
6:13
#2778
23M
23.00 mi12:33:242:30:016:318:09
6:31
#2646
24M
24.00 mi12:39:482:36:256:316:24
6:24
#2562
40K
24.85 mi12:45:132:41:506:315:25
6:20
#2469
25.2M
25.20 mi12:47:352:44:126:312:22
6:52
#2427
Finish
26.22 mi12:53:462:50:236:306:11
6:04
#2335
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi29351361363212(Top 11%)149(Top 1%)149(Top 3%)
10K6.21 mi3.10 mi2946-11134+2134+23028(Top 11%)139(Top 1%)139(Top 3%)
15K9.32 mi3.11 mi3030-84136-2136-23212(Top 11%)149(Top 1%)149(Top 3%)
20K12.43 mi3.11 mi3339-309158-22158-224401(Top 15%)277(Top 2%)277(Top 5%)
Half13.11 mi0.68 mi3330+9157+1157+13289(Top 12%)152(Top 1%)152(Top 3%)
25K15.53 mi2.42 mi3236+94148+9148+92888(Top 10%)133(Top 1%)133(Top 2%)
30K18.64 mi3.11 mi3077+159143+5143+52618(Top 9%)133(Top 1%)133(Top 2%)
20M20.00 mi1.36 mi2958+119138+5138+52249(Top 8%)115(Top 0.9%)115(Top 2%)
21M21.00 mi1.00 mi2868+90133+5133+52027(Top 7%)113(Top 0.9%)113(Top 2%)
35K21.75 mi0.75 mi2778+90129+4129+41319(Top 5%)67(Top 0.5%)67(Top 1%)
23M23.00 mi1.25 mi2646+132126+3126+31504(Top 5%)87(Top 0.7%)87(Top 2%)
24M24.00 mi1.00 mi2562+84125+1125+11681(Top 6%)106(Top 0.9%)106(Top 2%)
40K24.85 mi0.85 mi2469+93119+6119+61075(Top 4%)65(Top 0.5%)65(Top 1%)
25.2M25.20 mi0.35 mi2427+42118+1118+11181(Top 4%)87(Top 0.7%)87(Top 2%)
Finish26.22 mi1.02 mi2335+92114+4114+41125(Top 4%)67(Top 0.5%)67(Top 1%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3212

Females

149

F18-39

149

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3028

Females

139

F18-39

139

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3212

Females

149

F18-39

149

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4401

Females

277

F18-39

277

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3289

Females

152

F18-39

152

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2888

Females

133

F18-39

133

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2618

Females

133

F18-39

133

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2249

Females

115

F18-39

115

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

2027

Females

113

F18-39

113

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1319

Females

67

F18-39

67

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1504

Females

87

F18-39

87

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1681

Females

106

F18-39

106

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1075

Females

65

F18-39

65

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1181

Females

87

F18-39

87

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1125

Females

67

F18-39

67

Passing Analysis

Category:
Athletes Passed
1321
Passed By
721
Net Change
+600
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2935
5K → 10K132143-11#2935#2946
10K → 15K52136-84#2946#3030
15K → 20K31340-309#3030#3339
20K → Half1910+9#3339#3330
Half → 25K11218+94#3330#3236
25K → 30K19839+159#3236#3077
30K → 20M1245+119#3077#2958
20M → 21M10111+90#2958#2868
21M → 35K933+90#2868#2778
35K → 23M1364+132#2778#2646
23M → 24M906+84#2646#2562
24M → 40K941+93#2562#2469
40K → 25.2M442+42#2469#2427
25.2M → Finish953+92#2427#2335
TOTALS1321721+600
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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