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BOSTON MARATHON 2025

Jackie Loewen

Bib: 15209•F

MB

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 28%
Gender (Female)
#0 / 12228
Top 11%
Division (F18-39)
#0 / 5469
Top 20%
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
7:17/mi
22:37
↑ 97↓ 3451.5%
10K· 6.21 mi
7:13/mi
45:01
↑ 79↓ 1380.4%
15K· 9.32 mi
7:12/mi
1:07:23
↑ 67↓ 78
20K· 12.43 mi
7:14/mi
1:29:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:11/mi
1:34:44
↑ 19↓ 370.5%
25K· 15.53 mi
7:16/mi
1:52:22
↑ 66↓ 880.2%
30K· 18.64 mi
7:22/mi
2:15:15
↑ 181↓ 1480.2%
20M
7:31/mi
2:25:28
↑ 64↓ 500.2%
21M
8:00/mi
2:33:28
↑ 106↓ 241.6%
35K· 21.75 mi
7:08/mi
2:38:48
↑ 17↓ 861.7%
23M
7:30/mi
2:48:11
↑ 23↓ 630.6%
24M
7:35/mi
2:55:46
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:02:26
↓ 200.3%
25.2M
8:51/mi
3:05:29
↑ 13↓ 160.2%
Finish· 26.22 mi
7:20/mi
3:12:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:44
Pace7:14 /mi
2nd Half
Distance13.11 mi
Time1:38:13
Pace7:30 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:3722:377:1722:37
7:17
-
10K
6.21 mi11:17:0145:017:1522:24
7:13
-0:04
15K
9.32 mi11:39:231:07:237:1422:22
7:12
-0:01
20K
12.43 mi12:01:501:29:507:1422:27
7:14
+0:02
Half
13.11 mi12:06:441:34:447:144:54
7:11
-0:03
25K
15.53 mi12:24:221:52:227:1417:38
7:16
+0:05
30K
18.64 mi12:47:152:15:157:1522:53
7:22
+0:06
20M
20.00 mi12:57:282:25:287:1610:13
7:31
+0:09
21M
21.00 mi13:05:282:33:287:188:00
8:00
+0:29
35K
21.75 mi13:10:482:38:487:185:20
7:08
-0:52
23M
23.00 mi13:20:112:48:117:199:23
7:30
+0:22
24M
24.00 mi13:27:462:55:467:197:35
7:35
+0:05
40K
24.85 mi13:34:263:02:267:206:40
7:48
+0:13
25.2M
25.20 mi13:37:293:05:297:223:03
8:51
+1:03
Finish
26.22 mi13:44:573:12:577:227:28
7:20
-1:31

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

7:08 /mi

Average Pace

7:22 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:47:39

87% of race

Time at Slower Pace

25:18

13% of race

Average Pace: 7:22 /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 mi10:54:3722:377:1722:37
7:17
#10165
10K
6.21 mi11:17:0145:017:1522:24
7:13
#9839
15K
9.32 mi11:39:231:07:237:1422:22
7:12
#9581
20K
12.43 mi12:01:501:29:507:1422:27
7:14
#9245
Half
13.11 mi12:06:441:34:447:144:54
7:11
#9225
25K
15.53 mi12:24:221:52:227:1417:38
7:16
#8977
30K
18.64 mi12:47:152:15:157:1522:53
7:22
#8471
20M
20.00 mi12:57:282:25:287:1610:13
7:31
#8325
21M
21.00 mi13:05:282:33:287:188:00
8:00
#8200
35K
21.75 mi13:10:482:38:487:185:20
7:08
#8075
23M
23.00 mi13:20:112:48:117:199:23
7:30
#7903
24M
24.00 mi13:27:462:55:467:197:35
7:35
#7908
40K
24.85 mi13:34:263:02:267:206:40
7:48
#7901
25.2M
25.20 mi13:37:293:05:297:223:03
8:51
#7932
Finish
26.22 mi13:44:573:12:577:227:28
7:20
#7885
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10165187418749126(Top 32%)1479(Top 12%)1479(Top 27%)
10K6.21 mi3.10 mi9839+3261725+1491725+1499593(Top 34%)1638(Top 13%)1638(Top 30%)
15K9.32 mi3.11 mi9581+2581640+851640+859126(Top 32%)1479(Top 12%)1479(Top 27%)
20K12.43 mi3.11 mi9245+3361522+1181522+1188432(Top 30%)1285(Top 11%)1285(Top 23%)
Half13.11 mi0.68 mi9225+201519+31519+38983(Top 32%)1484(Top 12%)1484(Top 27%)
25K15.53 mi2.42 mi8977+2481438+811438+818165(Top 29%)1281(Top 10%)1281(Top 23%)
30K18.64 mi3.11 mi8471+5061289+1491289+1496856(Top 24%)956(Top 8%)956(Top 17%)
20M20.00 mi1.36 mi8325+1461259+301259+307156(Top 25%)1203(Top 10%)1203(Top 22%)
21M21.00 mi1.00 mi8200+1251248+111248+117364(Top 26%)1459(Top 12%)1459(Top 27%)
35K21.75 mi0.75 mi8075+1251223+251223+256206(Top 22%)996(Top 8%)996(Top 18%)
23M23.00 mi1.25 mi7903+1721208+151208+156611(Top 23%)1232(Top 10%)1232(Top 23%)
24M24.00 mi1.00 mi7908-51247-391247-398305(Top 29%)1997(Top 16%)1997(Top 37%)
40K24.85 mi0.85 mi7901+71271-241271-248755(Top 31%)2325(Top 19%)2325(Top 43%)
25.2M25.20 mi0.35 mi7932-311297-261297-2610931(Top 38%)3425(Top 28%)3425(Top 63%)
Finish26.22 mi1.02 mi7885+471308-111308-117976(Top 28%)2051(Top 17%)2051(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21story building
+97ft-345ft

Overall

9126

Females

1479

F18-39

1479

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9593

Females

1638

F18-39

1638

10K→15K

6.2 - 9.3 mi

Top 32%
×3story building
+67ft-78ft

Overall

9126

Females

1479

F18-39

1479

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8432

Females

1285

F18-39

1285

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8983

Females

1484

F18-39

1484

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8165

Females

1281

F18-39

1281

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6856

Females

956

F18-39

956

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

7156

Females

1203

F18-39

1203

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

7364

Females

1459

F18-39

1459

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6206

Females

996

F18-39

996

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6611

Females

1232

F18-39

1232

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

8305

Females

1997

F18-39

1997

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8755

Females

2325

F18-39

2325

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10931

Females

3425

F18-39

3425

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7976

Females

2051

F18-39

2051

Passing Analysis

Category:
Athletes Passed
2901*
Passed By
621
Net Change
+2280
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10165
5K → 10K435*109+326#10165#9839
10K → 15K32062+258#9839#9581
15K → 20K36630+336#9581#9245
20K → Half4222+20#9245#9225
Half → 25K27830+248#9225#8977
25K → 30K53024+506#8977#8471
30K → 20M17731+146#8471#8325
20M → 21M15227+125#8325#8200
21M → 35K1327+125#8200#8075
35K → 23M19826+172#8075#7903
23M → 24M7075-5#7903#7908
24M → 40K7467+7#7908#7901
40K → 25.2M2556-31#7901#7932
25.2M → Finish10255+47#7932#7885
TOTALS2901*621+2280

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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