Boston Marathon logo
BOSTON MARATHON 2025

Eric Krohne

Bib: 12289•M

NH

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 26%
Gender (Male)
#0 / 16105
Top 39%
Masters (Masters Men)
#0 / 10463
Top 26%
Division (M45-49)
#0 / 2386
Top 37%
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
7:30/mi
23:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:22
↑ 79↓ 1380.4%
15K· 9.32 mi
7:14/mi
1:08:50
↑ 67↓ 78
20K· 12.43 mi
7:15/mi
1:31:21
↑ 106↓ 860.1%
Half· 13.11 mi
7:20/mi
1:36:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:23/mi
1:54:16
↑ 66↓ 880.2%
30K· 18.64 mi
7:24/mi
2:17:15
↑ 181↓ 1480.2%
20M
7:19/mi
2:27:11
↑ 64↓ 500.2%
21M
7:17/mi
2:34:27
↑ 106↓ 241.6%
35K· 21.75 mi
7:17/mi
2:39:54
↑ 17↓ 861.7%
23M
7:18/mi
2:49:03
↑ 23↓ 630.6%
24M
7:15/mi
2:56:18
↓ 821.3%
40K· 24.85 mi
7:06/mi
3:02:22
↓ 200.3%
25.2M
7:27/mi
3:04:56
↑ 13↓ 160.2%
Finish· 26.22 mi
6:35/mi
3:11:39
↑ 22↓ 21

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 Half
Distance13.11 mi
Time1:36:21
Pace7:21 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:35:18
Pace7:16 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4623:177:3023:17
7:30
-
10K
6.21 mi11:14:5146:227:2823:05
7:26
-0:04
15K
9.32 mi11:37:191:08:507:2322:28
7:14
-0:12
20K
12.43 mi11:59:501:31:217:2122:31
7:15
+0:01
Half
13.11 mi12:04:501:36:217:215:00
7:20
+0:05
25K
15.53 mi12:22:451:54:167:2117:55
7:23
+0:03
30K
18.64 mi12:45:442:17:157:2222:59
7:24
+0:01
20M
20.00 mi12:55:402:27:117:229:56
7:19
-0:05
21M
21.00 mi13:02:562:34:277:217:16
7:17
-0:02
35K
21.75 mi13:08:232:39:547:215:27
7:17
0:00
23M
23.00 mi13:17:322:49:037:219:09
7:18
+0:01
24M
24.00 mi13:24:472:56:187:217:15
7:15
-0:03
40K
24.85 mi13:30:513:02:227:206:04
7:06
-0:09
25.2M
25.20 mi13:33:253:04:567:202:34
7:27
+0:21
Finish
26.22 mi13:40:083:11:397:196:43
6:35
-0:52

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

6:35 /mi

Average Pace

7:19 /mi

Slowest Pace

7:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

35:15

18% of race

Time at Steady Pace

2:36:24

82% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:19 /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 mi10:51:4623:177:3023:17
7:30
#12172
10K
6.21 mi11:14:5146:227:2823:05
7:26
#11790
15K
9.32 mi11:37:191:08:507:2322:28
7:14
#10917
20K
12.43 mi11:59:501:31:217:2122:31
7:15
#10309
Half
13.11 mi12:04:501:36:217:215:00
7:20
#10291
25K
15.53 mi12:22:451:54:167:2117:55
7:23
#10050
30K
18.64 mi12:45:442:17:157:2222:59
7:24
#9386
20M
20.00 mi12:55:402:27:117:229:56
7:19
#9032
21M
21.00 mi13:02:562:34:277:217:16
7:17
#8595
35K
21.75 mi13:08:232:39:547:215:27
7:17
#8491
23M
23.00 mi13:17:322:49:037:219:09
7:18
#8223
24M
24.00 mi13:24:472:56:187:217:15
7:15
#8066
40K
24.85 mi13:30:513:02:227:206:04
7:06
#7868
25.2M
25.20 mi13:33:253:04:567:202:34
7:27
#7748
Finish
26.22 mi13:40:083:11:397:196:43
6:35
#7509
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi12172924692469361(Top 33%)7740(Top 48%)7740(Top 324%)
10K6.21 mi3.10 mi11790+3829060+1869060+18611433(Top 40%)8867(Top 55%)8867(Top 372%)
15K9.32 mi3.11 mi10917+8738607+4538607+4539361(Top 33%)7740(Top 48%)7740(Top 324%)
20K12.43 mi3.11 mi10309+6088264+3438264+3438581(Top 30%)7210(Top 45%)7210(Top 302%)
Half13.11 mi0.68 mi10291+188249+158249+1510154(Top 36%)8070(Top 50%)8070(Top 338%)
25K15.53 mi2.42 mi10050+2418089+1608089+1609045(Top 32%)7361(Top 46%)7361(Top 309%)
30K18.64 mi3.11 mi9386+6647686+4037686+4037025(Top 25%)5986(Top 37%)5986(Top 251%)
20M20.00 mi1.36 mi9032+3547454+2327454+2325844(Top 21%)5087(Top 32%)5087(Top 213%)
21M21.00 mi1.00 mi8595+4377165+2897165+2893505(Top 12%)3204(Top 20%)3204(Top 134%)
35K21.75 mi0.75 mi8491+1047080+857080+857057(Top 25%)5711(Top 35%)5711(Top 239%)
23M23.00 mi1.25 mi8223+2686883+1976883+1975509(Top 19%)4672(Top 29%)4672(Top 196%)
24M24.00 mi1.00 mi8066+1576741+1426741+1426103(Top 21%)4980(Top 31%)4980(Top 209%)
40K24.85 mi0.85 mi7868+1986592+1496592+1494438(Top 16%)3806(Top 24%)3806(Top 160%)
25.2M25.20 mi0.35 mi7748+1206495+976495+973160(Top 11%)2801(Top 17%)2801(Top 117%)
Finish26.22 mi1.02 mi7509+2396315+1806315+1803289(Top 12%)2897(Top 18%)2897(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9361

Males

7740

M45-49

7740

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

11433

Males

8867

M45-49

8867

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9361

Males

7740

M45-49

7740

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8581

Males

7210

M45-49

7210

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

10154

Males

8070

M45-49

8070

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

9045

Males

7361

M45-49

7361

25K→30K

15.5 - 18.6 mi

Top 25%
×9story building
+181ft-148ft

Overall

7025

Males

5986

M45-49

5986

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

5844

Males

5087

M45-49

5087

20M→21M

20.0 - 21.0 mi

Top 12%
×8story building
+106ft-24ft

Overall

3505

Males

3204

M45-49

3204

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

7057

Males

5711

M45-49

5711

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5509

Males

4672

M45-49

4672

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

6103

Males

4980

M45-49

4980

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4438

Males

3806

M45-49

3806

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

3160

Males

2801

M45-49

2801

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2story building
+22ft-21ft

Overall

3289

Males

2897

M45-49

2897

Passing Analysis

Category:
Athletes Passed
4892*
Passed By
229
Net Change
+4663
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12172
5K → 10K492110+382#12172#11790
10K → 15K8807+873#11790#10917
15K → 20K6168+608#10917#10309
20K → Half4325+18#10309#10291
Half → 25K277*36+241#10291#10050
25K → 30K670*6+664#10050#9386
30K → 20M3573+354#9386#9032
20M → 21M4370+437#9032#8595
21M → 35K11814+104#8595#8491
35K → 23M2768+268#8491#8223
23M → 24M16811+157#8223#8066
24M → 40K1980+198#8066#7868
40K → 25.2M1211+120#7868#7748
25.2M → Finish2390+239#7748#7509
TOTALS4892*229+4663

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

📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing