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BOSTON MARATHON 2025

Heidi Mitchell

Bib: 20551•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F55-59)
#0 / 994
Top 14%
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
8:12/mi
25:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:03/mi
50:30
↑ 79↓ 1380.4%
15K· 9.32 mi
8:05/mi
1:15:36
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:41:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:47:01
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:07:16
↑ 66↓ 880.2%
30K· 18.64 mi
8:38/mi
2:34:04
↑ 181↓ 1480.2%
20M
8:43/mi
2:45:55
↑ 64↓ 500.2%
21M
9:27/mi
2:55:22
↑ 106↓ 241.6%
35K· 21.75 mi
8:37/mi
3:01:49
↑ 17↓ 861.7%
23M
9:03/mi
3:13:09
↑ 23↓ 630.6%
24M
9:00/mi
3:22:09
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:29:58
↓ 200.3%
25.2M
9:57/mi
3:33:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:49/mi
3:42:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:01
Pace8:10 /mi
2nd Half
Distance13.11 mi
Time1:55:22
Pace8:48 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:1025:288:1225:28
8:12
-
10K
6.21 mi11:47:1250:308:0825:02
8:03
-0:09
15K
9.32 mi12:12:181:15:368:0725:06
8:05
+0:02
20K
12.43 mi12:38:151:41:338:1025:57
8:21
+0:16
Half
13.11 mi12:43:431:47:018:105:28
8:01
-0:20
25K
15.53 mi13:03:582:07:168:1220:15
8:21
+0:20
30K
18.64 mi13:30:462:34:048:1626:48
8:38
+0:17
20M
20.00 mi13:42:372:45:558:1811:51
8:43
+0:05
21M
21.00 mi13:52:042:55:228:219:27
9:27
+0:44
35K
21.75 mi13:58:313:01:498:226:27
8:37
-0:50
23M
23.00 mi14:09:513:13:098:2411:20
9:03
+0:26
24M
24.00 mi14:18:513:22:098:259:00
9:00
-0:03
40K
24.85 mi14:26:403:29:588:277:49
9:09
+0:09
25.2M
25.20 mi14:30:063:33:248:283:26
9:57
+0:48
Finish
26.22 mi14:39:053:42:238:298:59
8:49
-1:08

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

8:01 /mi

Average Pace

8:29 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:16

57% of race

Time at Steady Pace

54:05

24% of race

Time at Slower Pace

41:02

18% of race

Average Pace: 8:29 /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 mi11:22:1025:288:1225:28
8:12
#18085
10K
6.21 mi11:47:1250:308:0825:02
8:03
#17468
15K
9.32 mi12:12:181:15:368:0725:06
8:05
#17164
20K
12.43 mi12:38:151:41:338:1025:57
8:21
#17160
Half
13.11 mi12:43:431:47:018:105:28
8:01
#17084
25K
15.53 mi13:03:582:07:168:1220:15
8:21
#16911
30K
18.64 mi13:30:462:34:048:1626:48
8:38
#16626
20M
20.00 mi13:42:372:45:558:1811:51
8:43
#16487
21M
21.00 mi13:52:042:55:228:219:27
9:27
#16391
35K
21.75 mi13:58:313:01:498:226:27
8:37
#16357
23M
23.00 mi14:09:513:13:098:2411:20
9:03
#16330
24M
24.00 mi14:18:513:22:098:259:00
9:00
#16365
40K
24.85 mi14:26:403:29:588:277:49
9:09
#16381
25.2M
25.20 mi14:30:063:33:248:283:26
9:57
#16401
Finish
26.22 mi14:39:053:42:238:298:59
8:49
#16465
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi180856395639516615(Top 58%)5508(Top 45%)5508(Top 554%)
10K6.21 mi3.10 mi17468+6176019+3766019+37616905(Top 60%)5650(Top 46%)5650(Top 568%)
15K9.32 mi3.11 mi17164+3045809+2105809+21016615(Top 58%)5508(Top 45%)5508(Top 554%)
20K12.43 mi3.11 mi17160+45835-265835-2617252(Top 61%)5915(Top 48%)5915(Top 595%)
Half13.11 mi0.68 mi17084+765798+375798+3716082(Top 57%)5243(Top 43%)5243(Top 527%)
25K15.53 mi2.42 mi16911+1735713+855713+8516262(Top 57%)5461(Top 45%)5461(Top 549%)
30K18.64 mi3.11 mi16626+2855595+1185595+11815547(Top 55%)5206(Top 43%)5206(Top 524%)
20M20.00 mi1.36 mi16487+1395547+485547+4815212(Top 54%)5162(Top 42%)5162(Top 519%)
21M21.00 mi1.00 mi16391+965521+265521+2615872(Top 56%)5641(Top 46%)5641(Top 568%)
35K21.75 mi0.75 mi16357+345517+45517+416214(Top 57%)5899(Top 48%)5899(Top 593%)
23M23.00 mi1.25 mi16330+275533-165533-1616561(Top 58%)6202(Top 51%)6202(Top 624%)
24M24.00 mi1.00 mi16365-355586-535586-5317379(Top 61%)6692(Top 55%)6692(Top 673%)
40K24.85 mi0.85 mi16381-165625-395625-3917096(Top 60%)6627(Top 54%)6627(Top 667%)
25.2M25.20 mi0.35 mi16401-205644-195644-1916857(Top 59%)6511(Top 53%)6511(Top 655%)
Finish26.22 mi1.02 mi16465-645710-665710-6618143(Top 64%)7152(Top 58%)7152(Top 720%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16615

Females

5508

F55-59

5508

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

16905

Females

5650

F55-59

5650

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16615

Females

5508

F55-59

5508

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17252

Females

5915

F55-59

5915

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16082

Females

5243

F55-59

5243

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16262

Females

5461

F55-59

5461

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

15547

Females

5206

F55-59

5206

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15212

Females

5162

F55-59

5162

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15872

Females

5641

F55-59

5641

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16214

Females

5899

F55-59

5899

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

16561

Females

6202

F55-59

6202

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

17379

Females

6692

F55-59

6692

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17096

Females

6627

F55-59

6627

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16857

Females

6511

F55-59

6511

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18143

Females

7152

F55-59

7152

Passing Analysis

Category:
Athletes Passed
2713
Passed By
1093
Net Change
+1620
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18085
5K → 10K69578+617#18085#17468
10K → 15K38379+304#17468#17164
15K → 20K190186+4#17164#17160
20K → Half826+76#17160#17084
Half → 25K23562+173#17084#16911
25K → 30K36580+285#16911#16626
30K → 20M17940+139#16626#16487
20M → 21M16266+96#16487#16391
21M → 35K7642+34#16391#16357
35K → 23M12396+27#16357#16330
23M → 24M75110-35#16330#16365
24M → 40K6682-16#16365#16381
40K → 25.2M2242-20#16381#16401
25.2M → Finish60124-64#16401#16465
TOTALS27131093+1620
📊

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