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BOSTON MARATHON 2025

Jenny Hallstroem

Bib: 28728•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 45%
Division (F18-39)
#0 / 5469
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
8:19/mi
25:51
↑ 97↓ 3451.5%
10K· 6.21 mi
8:24/mi
51:57
↑ 79↓ 1380.4%
15K· 9.32 mi
8:26/mi
1:18:08
↑ 67↓ 78
20K· 12.43 mi
8:33/mi
1:44:42
↑ 106↓ 860.1%
Half· 13.11 mi
8:18/mi
1:50:22
↑ 19↓ 370.5%
25K· 15.53 mi
8:23/mi
2:10:41
↑ 66↓ 880.2%
30K· 18.64 mi
8:47/mi
2:37:59
↑ 181↓ 1480.2%
20M
8:52/mi
2:50:02
↑ 64↓ 500.2%
21M
9:06/mi
2:59:08
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
3:05:23
↑ 17↓ 861.7%
23M
8:28/mi
3:15:59
↑ 23↓ 630.6%
24M
7:55/mi
3:23:54
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:30:50
↓ 200.3%
25.2M
8:10/mi
3:33:39
↑ 13↓ 160.2%
Finish· 26.22 mi
7:22/mi
3:41:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:50:22
Pace8:25 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:50:47
Pace8:27 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:4325:518:1925:51
8:19
-
10K
6.21 mi12:08:4951:578:2226:06
8:24
+0:05
15K
9.32 mi12:35:001:18:088:2326:11
8:26
+0:02
20K
12.43 mi13:01:341:44:428:2526:34
8:33
+0:07
Half
13.11 mi13:07:141:50:228:255:40
8:18
-0:15
25K
15.53 mi13:27:332:10:418:2520:19
8:23
+0:05
30K
18.64 mi13:54:512:37:598:2827:18
8:47
+0:24
20M
20.00 mi14:06:542:50:028:3012:03
8:52
+0:05
21M
21.00 mi14:16:002:59:088:329:06
9:06
+0:14
35K
21.75 mi14:22:153:05:238:316:15
8:21
-0:45
23M
23.00 mi14:32:513:15:598:3110:36
8:28
+0:07
24M
24.00 mi14:40:463:23:548:307:55
7:55
-0:33
40K
24.85 mi14:47:423:30:508:296:56
8:07
+0:12
25.2M
25.20 mi14:50:313:33:398:292:49
8:10
+0:03
Finish
26.22 mi14:58:013:41:098:267:30
7:22
-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

7:22 /mi

Average Pace

8:26 /mi

Slowest Pace

9:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:10

11% of race

Time at Steady Pace

2:27:32

67% of race

Time at Slower Pace

48:27

22% of race

Average Pace: 8:26 /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 mi11:42:4325:518:1925:51
8:19
#18833
10K
6.21 mi12:08:4951:578:2226:06
8:24
#19001
15K
9.32 mi12:35:001:18:088:2326:11
8:26
#18927
20K
12.43 mi13:01:341:44:428:2526:34
8:33
#18802
Half
13.11 mi13:07:141:50:228:255:40
8:18
#18761
25K
15.53 mi13:27:332:10:418:2520:19
8:23
#18353
30K
18.64 mi13:54:512:37:598:2827:18
8:47
#17936
20M
20.00 mi14:06:542:50:028:3012:03
8:52
#17787
21M
21.00 mi14:16:002:59:088:329:06
9:06
#17551
35K
21.75 mi14:22:153:05:238:316:15
8:21
#17438
23M
23.00 mi14:32:513:15:598:3110:36
8:28
#17152
24M
24.00 mi14:40:463:23:548:307:55
7:55
#16866
40K
24.85 mi14:47:423:30:508:296:56
8:07
#16624
25.2M
25.20 mi14:50:313:33:398:292:49
8:10
#16471
Finish
26.22 mi14:58:013:41:098:267:30
7:22
#16154
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi188336812681218868(Top 66%)6818(Top 56%)6818(Top 125%)
10K6.21 mi3.10 mi19001-1686904-926904-9219205(Top 68%)7001(Top 57%)7001(Top 128%)
15K9.32 mi3.11 mi18927+746868+366868+3618868(Top 66%)6818(Top 56%)6818(Top 125%)
20K12.43 mi3.11 mi18802+1256790+786790+7818549(Top 65%)6649(Top 54%)6649(Top 122%)
Half13.11 mi0.68 mi18761+416766+246766+2417972(Top 63%)6289(Top 51%)6289(Top 115%)
25K15.53 mi2.42 mi18353+4086554+2126554+21216448(Top 58%)5559(Top 45%)5559(Top 102%)
30K18.64 mi3.11 mi17936+4176364+1906364+19016523(Top 58%)5751(Top 47%)5751(Top 105%)
20M20.00 mi1.36 mi17787+1496307+576307+5716054(Top 57%)5622(Top 46%)5622(Top 103%)
21M21.00 mi1.00 mi17551+2366196+1116196+11114137(Top 50%)4710(Top 39%)4710(Top 86%)
35K21.75 mi0.75 mi17438+1136158+386158+3814651(Top 52%)5054(Top 41%)5054(Top 92%)
23M23.00 mi1.25 mi17152+2866022+1366022+13613140(Top 46%)4349(Top 36%)4349(Top 80%)
24M24.00 mi1.00 mi16866+2865879+1435879+14310721(Top 38%)3162(Top 26%)3162(Top 58%)
40K24.85 mi0.85 mi16624+2425767+1125767+11211009(Top 39%)3426(Top 28%)3426(Top 63%)
25.2M25.20 mi0.35 mi16471+1535680+875680+877008(Top 25%)1680(Top 14%)1680(Top 31%)
Finish26.22 mi1.02 mi16154+3175519+1615519+1618258(Top 29%)2194(Top 18%)2194(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18868

Females

6818

F18-39

6818

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

19205

Females

7001

F18-39

7001

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18868

Females

6818

F18-39

6818

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

18549

Females

6649

F18-39

6649

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

17972

Females

6289

F18-39

6289

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16448

Females

5559

F18-39

5559

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16523

Females

5751

F18-39

5751

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16054

Females

5622

F18-39

5622

20M→21M

20.0 - 21.0 mi

Top 50%
×8story building
+106ft-24ft

Overall

14137

Females

4710

F18-39

4710

21M→35K

21.0 - 21.8 mi

Top 52%
×7story building
+17ft-86ft

Overall

14651

Females

5054

F18-39

5054

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

13140

Females

4349

F18-39

4349

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10721

Females

3162

F18-39

3162

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

11009

Females

3426

F18-39

3426

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7008

Females

1680

F18-39

1680

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8258

Females

2194

F18-39

2194

Passing Analysis

Category:
Athletes Passed
3490
Passed By
811
Net Change
+2679
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18833
5K → 10K193361-168#18833#19001
10K → 15K231157+74#19001#18927
15K → 20K249124+125#18927#18802
20K → Half5615+41#18802#18761
Half → 25K4146+408#18761#18353
25K → 30K47356+417#18353#17936
30K → 20M19243+149#17936#17787
20M → 21M24711+236#17787#17551
21M → 35K12714+113#17551#17438
35K → 23M29812+286#17438#17152
23M → 24M2893+286#17152#16866
24M → 40K2464+242#16866#16624
40K → 25.2M1530+153#16624#16471
25.2M → Finish3225+317#16471#16154
TOTALS3490811+2679
📊

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