Boston Marathon logo
BOSTON MARATHON 2025

Didde Kjaersig

Bib: 27940•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:18
Rank: #22879
Start → 5K
28:18 | 9:07/mi
10K· 6.21 mi
55:14
Rank: #21906 (+973)
5K → 10K
26:56 | 8:40/mi
15K· 9.32 mi
1:21:29
Rank: #20966 (+940)
10K → 15K
26:15 | 8:27/mi
20K· 12.43 mi
1:48:20
Rank: #20515 (+451)
15K → 20K
26:51 | 8:39/mi
Half· 13.11 mi
1:54:06
Rank: #20431 (+84)
20K → Half
5:46 | 8:27/mi
25K· 15.53 mi
2:14:29
Rank: #19822 (+609)
Half → 25K
20:23 | 8:24/mi
30K· 18.64 mi
2:46:19
Rank: #20489 (-667)
25K → 30K
31:50 | 10:15/mi
20M
2:58:26
Rank: #20179 (+310)
30K → 20M
12:07 | 8:55/mi
21M
3:07:44
Rank: #19902 (+277)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
3:15:44
Rank: #20125 (-223)
21M → 35K
8:00 | 10:42/mi
23M
3:27:17
Rank: #19977 (+148)
35K → 23M
11:33 | 9:13/mi
24M
3:36:00
Rank: #19800 (+177)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:43:29
Rank: #19642 (+158)
24M → 40K
7:29 | 8:45/mi
25.2M
3:46:43
Rank: #19544 (+98)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:54:52
Rank: #19306 (+238)
25.2M → Finish
8:09 | 8:00/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:06
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time2:00:46
Pace9:13 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3428:189:0728:18
9:07
-
10K
6.21 mi12:13:3055:148:5326:56
8:40
-0:27
15K
9.32 mi12:39:451:21:298:4526:15
8:27
-0:13
20K
12.43 mi13:06:361:48:208:4326:51
8:39
+0:12
Half
13.11 mi13:12:221:54:068:425:46
8:27
-0:12
25K
15.53 mi13:32:452:14:298:3920:23
8:24
-0:03
30K
18.64 mi14:04:352:46:198:5531:50
10:15
+1:51
20M
20.00 mi14:16:422:58:268:5512:07
8:55
-1:20
21M
21.00 mi14:26:003:07:448:569:18
9:18
+0:23
35K
21.75 mi14:34:003:15:449:008:00
10:42
+1:24
23M
23.00 mi14:45:333:27:179:0111:33
9:13
-1:29
24M
24.00 mi14:54:163:36:009:008:43
8:43
-0:30
40K
24.85 mi15:01:453:43:298:597:29
8:45
+0:02
25.2M
25.20 mi15:04:593:46:439:003:14
9:23
+0:38
Finish
26.22 mi15:13:083:54:528:588:09
8:00
-1:23

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

8:00 /mi

Average Pace

8:58 /mi

Slowest Pace

10:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

28:32

12% of race

Time at Steady Pace

1:54:07

49% of race

Time at Slower Pace

1:32:13

39% of race

Average Pace: 8:57 /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 mi11:46:3428:189:0728:18
9:07
#22879
10K
6.21 mi12:13:3055:148:5326:56
8:40
#21906
15K
9.32 mi12:39:451:21:298:4526:15
8:27
#20966
20K
12.43 mi13:06:361:48:208:4326:51
8:39
#20515
Half
13.11 mi13:12:221:54:068:425:46
8:27
#20431
25K
15.53 mi13:32:452:14:298:3920:23
8:24
#19822
30K
18.64 mi14:04:352:46:198:5531:50
10:15
#20489
20M
20.00 mi14:16:422:58:268:5512:07
8:55
#20179
21M
21.00 mi14:26:003:07:448:569:18
9:18
#19902
35K
21.75 mi14:34:003:15:449:008:00
10:42
#20125
23M
23.00 mi14:45:333:27:179:0111:33
9:13
#19977
24M
24.00 mi14:54:163:36:009:008:43
8:43
#19800
40K
24.85 mi15:01:453:43:298:597:29
8:45
#19642
25.2M
25.20 mi15:04:593:46:439:003:14
9:23
#19544
Finish
26.22 mi15:13:083:54:528:588:09
8:00
#19306
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi228799108910819038(Top 67%)6925(Top 57%)6925(Top 127%)
10K6.21 mi3.10 mi21906+9738551+5578551+55720711(Top 73%)7866(Top 64%)7866(Top 144%)
15K9.32 mi3.11 mi20966+9408021+5308021+53019038(Top 67%)6925(Top 57%)6925(Top 127%)
20K12.43 mi3.11 mi20515+4517771+2507771+25019107(Top 67%)6976(Top 57%)6976(Top 128%)
Half13.11 mi0.68 mi20431+847723+487723+4818957(Top 67%)6880(Top 56%)6880(Top 126%)
25K15.53 mi2.42 mi19822+6097383+3407383+34016637(Top 59%)5657(Top 46%)5657(Top 103%)
30K18.64 mi3.11 mi20489-6677811-4287811-42822310(Top 79%)8943(Top 73%)8943(Top 164%)
20M20.00 mi1.36 mi20179+3107660+1517660+15116371(Top 58%)5819(Top 48%)5819(Top 106%)
21M21.00 mi1.00 mi19902+2777514+1467514+14615192(Top 53%)5296(Top 43%)5296(Top 97%)
35K21.75 mi0.75 mi20125-2237659-1457659-14523572(Top 83%)9838(Top 80%)9838(Top 180%)
23M23.00 mi1.25 mi19977+1487605+547605+5417474(Top 62%)6712(Top 55%)6712(Top 123%)
24M24.00 mi1.00 mi19800+1777537+687537+6815887(Top 56%)5877(Top 48%)5877(Top 107%)
40K24.85 mi0.85 mi19642+1587463+747463+7414969(Top 53%)5514(Top 45%)5514(Top 101%)
25.2M25.20 mi0.35 mi19544+987422+417422+4114016(Top 49%)5059(Top 41%)5059(Top 93%)
Finish26.22 mi1.02 mi19306+2387299+1237299+12312922(Top 45%)4405(Top 36%)4405(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

19038

Females

6925

F18-39

6925

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20711

Females

7866

F18-39

7866

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

19038

Females

6925

F18-39

6925

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

19107

Females

6976

F18-39

6976

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

18957

Females

6880

F18-39

6880

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16637

Females

5657

F18-39

5657

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

22310

Females

8943

F18-39

8943

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16371

Females

5819

F18-39

5819

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

15192

Females

5296

F18-39

5296

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23572

Females

9838

F18-39

9838

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

17474

Females

6712

F18-39

6712

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15887

Females

5877

F18-39

5877

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14969

Females

5514

F18-39

5514

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

14016

Females

5059

F18-39

5059

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12922

Females

4405

F18-39

4405

Passing Analysis

Category:
Athletes Passed
4644
Passed By
1071
Net Change
+3573
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22879
5K → 10K98815+973#22879#21906
10K → 15K9499+940#21906#20966
15K → 20K46514+451#20966#20515
20K → Half851+84#20515#20431
Half → 25K6145+609#20431#19822
25K → 30K86753-667#19822#20489
30K → 20M3122+310#20489#20179
20M → 21M2781+277#20179#19902
21M → 35K17240-223#19902#20125
35K → 23M17022+148#20125#19977
23M → 24M1814+177#19977#19800
24M → 40K1613+158#19800#19642
40K → 25.2M1002+98#19642#19544
25.2M → Finish2380+238#19544#19306
TOTALS46441071+3573
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing