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BOSTON MARATHON 2025

Kristen Seitz

Bib: 19174•F

NH

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
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
8:09/mi
25:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:44
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:16:09
↑ 67↓ 78
20K· 12.43 mi
8:16/mi
1:41:49
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:47:24
↑ 19↓ 370.5%
25K· 15.53 mi
8:20/mi
2:07:37
↑ 66↓ 880.2%
30K· 18.64 mi
8:40/mi
2:34:33
↑ 181↓ 1480.2%
20M
8:48/mi
2:46:30
↑ 64↓ 500.2%
21M
9:22/mi
2:55:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:02:17
↑ 17↓ 861.7%
23M
8:54/mi
3:13:25
↑ 23↓ 630.6%
24M
8:46/mi
3:22:11
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:29:51
↓ 200.3%
25.2M
10:50/mi
3:33:35
↑ 13↓ 160.2%
Finish· 26.22 mi
8:38/mi
3:42:23
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:24
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:54:59
Pace8:46 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1625:208:0925:20
8:09
-
10K
6.21 mi11:41:4050:448:1025:24
8:11
+0:02
15K
9.32 mi12:07:051:16:098:1025:25
8:11
0:00
20K
12.43 mi12:32:451:41:498:1225:40
8:16
+0:05
Half
13.11 mi12:38:201:47:248:125:35
8:11
-0:05
25K
15.53 mi12:58:332:07:378:1320:13
8:20
+0:09
30K
18.64 mi13:25:292:34:338:1726:56
8:40
+0:20
20M
20.00 mi13:37:262:46:308:1911:57
8:48
+0:08
21M
21.00 mi13:46:482:55:528:229:22
9:22
+0:34
35K
21.75 mi13:53:133:02:178:236:25
8:35
-0:47
23M
23.00 mi14:04:213:13:258:2511:08
8:54
+0:19
24M
24.00 mi14:13:073:22:118:258:46
8:46
-0:08
40K
24.85 mi14:20:473:29:518:277:40
8:58
+0:12
25.2M
25.20 mi14:24:313:33:358:293:44
10:50
+1:52
Finish
26.22 mi14:33:193:42:238:298:48
8:38
-2:12

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

8:09 /mi

Average Pace

8:29 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:24

48% of race

Time at Steady Pace

1:34:13

42% of race

Time at Slower Pace

20:46

9% 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 mi11:16:1625:208:0925:20
8:09
#17788
10K
6.21 mi11:41:4050:448:1025:24
8:11
#17732
15K
9.32 mi12:07:051:16:098:1025:25
8:11
#17563
20K
12.43 mi12:32:451:41:498:1225:40
8:16
#17303
Half
13.11 mi12:38:201:47:248:125:35
8:11
#17279
25K
15.53 mi12:58:332:07:378:1320:13
8:20
#17050
30K
18.64 mi13:25:292:34:338:1726:56
8:40
#16783
20M
20.00 mi13:37:262:46:308:1911:57
8:48
#16673
21M
21.00 mi13:46:482:55:528:229:22
9:22
#16548
35K
21.75 mi13:53:133:02:178:236:25
8:35
#16502
23M
23.00 mi14:04:213:13:258:2511:08
8:54
#16406
24M
24.00 mi14:13:073:22:118:258:46
8:46
#16378
40K
24.85 mi14:20:473:29:518:277:40
8:58
#16357
25.2M
25.20 mi14:24:313:33:358:293:44
10:50
#16454
Finish
26.22 mi14:33:193:42:238:298:48
8:38
#16461
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi177886209620917287(Top 61%)5895(Top 48%)5895(Top 108%)
10K6.21 mi3.10 mi17732+566160+496160+4917728(Top 62%)6136(Top 50%)6136(Top 112%)
15K9.32 mi3.11 mi17563+1696050+1106050+11017287(Top 61%)5895(Top 48%)5895(Top 108%)
20K12.43 mi3.11 mi17303+2605919+1315919+13116714(Top 59%)5615(Top 46%)5615(Top 103%)
Half13.11 mi0.68 mi17279+245915+45915+417226(Top 61%)5891(Top 48%)5891(Top 108%)
25K15.53 mi2.42 mi17050+2295797+1185797+11816183(Top 57%)5420(Top 44%)5420(Top 99%)
30K18.64 mi3.11 mi16783+2675686+1115686+11115831(Top 56%)5361(Top 44%)5361(Top 98%)
20M20.00 mi1.36 mi16673+1105646+405646+4015646(Top 55%)5390(Top 44%)5390(Top 99%)
21M21.00 mi1.00 mi16548+1255608+385608+3815493(Top 55%)5451(Top 45%)5451(Top 100%)
35K21.75 mi0.75 mi16502+465606+25606+215968(Top 56%)5759(Top 47%)5759(Top 105%)
23M23.00 mi1.25 mi16406+965578+285578+2815655(Top 55%)5697(Top 47%)5697(Top 104%)
24M24.00 mi1.00 mi16378+285594-165594-1616142(Top 57%)6011(Top 49%)6011(Top 110%)
40K24.85 mi0.85 mi16357+215608-145608-1416122(Top 57%)6103(Top 50%)6103(Top 112%)
25.2M25.20 mi0.35 mi16454-975670-625670-6220121(Top 71%)8211(Top 67%)8211(Top 150%)
Finish26.22 mi1.02 mi16461-75706-365706-3617097(Top 60%)6602(Top 54%)6602(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17287

Females

5895

F18-39

5895

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17728

Females

6136

F18-39

6136

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17287

Females

5895

F18-39

5895

15K→20K

9.3 - 12.4 mi

Top 59%
×5story building
+106ft-86ft

Overall

16714

Females

5615

F18-39

5615

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17226

Females

5891

F18-39

5891

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16183

Females

5420

F18-39

5420

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15831

Females

5361

F18-39

5361

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15646

Females

5390

F18-39

5390

20M→21M

20.0 - 21.0 mi

Top 55%
×8story building
+106ft-24ft

Overall

15493

Females

5451

F18-39

5451

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

15968

Females

5759

F18-39

5759

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

15655

Females

5697

F18-39

5697

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

16142

Females

6011

F18-39

6011

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16122

Females

6103

F18-39

6103

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20121

Females

8211

F18-39

8211

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

17097

Females

6602

F18-39

6602

Passing Analysis

Category:
Athletes Passed
2423
Passed By
1096
Net Change
+1327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17788
5K → 10K310254+56#17788#17732
10K → 15K280111+169#17732#17563
15K → 20K32666+260#17563#17303
20K → Half4319+24#17303#17279
Half → 25K27546+229#17279#17050
25K → 30K36396+267#17050#16783
30K → 20M15848+110#16783#16673
20M → 21M16742+125#16673#16548
21M → 35K8438+46#16548#16502
35K → 23M16165+96#16502#16406
23M → 24M9264+28#16406#16378
24M → 40K7857+21#16378#16357
40K → 25.2M8105-97#16357#16454
25.2M → Finish7885-7#16454#16461
TOTALS24231096+1327
📊

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